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2021 Ford Mustang Mach E

Owner reports · Recalls · Investigations

More warning signs than most Mustang Mach E years

Owner complaints for the 2021 Ford Mustang Mach E are substantially higher than the model-year median of 82.5.

About this comparison →

When problems were reported

Mileage at the reported incident

Limited mileage data: 33 of 343 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Electrical System. Review the 151 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Forward Collision Avoidance. Review the 104 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 50 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

14 crash reports1 fire reports6 injury reports

Power Train complaints

50 reports
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Mileage unknown · Feb 15, 2025
Electrical SystemPower Train

The electrical system failed. Issue was it disengaged the 12 volt system as well. Vehicle seized and stopped in the middle of a high usage road with no ability to put into neutral. After speaking with Ford, they concede that there must be 12 volt battery power in order to put car in neutral. After 2 hours of blocking traffic Th…

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The electrical system failed. Issue was it disengaged the 12 volt system as well. Vehicle seized and stopped in the middle of a high usage road with no ability to put into neutral. After speaking with Ford, they concede that there must be 12 volt battery power in order to put car in neutral. After 2 hours of blocking traffic The tow truck arrived ( was a rainy day) and within a minute hooked up a 12 volt battery and drove the vehicle off the road way. This is not acceptable and needs to be addressed. My claim number with Ford is: case [XXX]. Thank you. Feel free to contact me in any further information is needed. [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI #11642954

Mileage unknown · Dec 26, 2024
Electrical SystemFuel/propulsion SystemPower Train

It has several error messages including "Stop safely now". This seems to be the same issue as recall 23S56 (TSB 22-2178). The vehicle is not drivable as it will not start or go into gear. Seems to be known issue with the HVBJB.

NHTSA ODI #11632397

Mileage unknown · Oct 19, 2024
Fuel/propulsion SystemPower Train

Mach e standard edition shows multiple signs of a failing High Voltage Battery Junction Box (HVBJB). The vehicle was bought certified pre owned with only 12k miles on the vehicle. At 16k miles (2 months of ownership) the vehicle showed a high voltage battery warning and power train malfunction warning. Three warning lights we…

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Mach e standard edition shows multiple signs of a failing High Voltage Battery Junction Box (HVBJB). The vehicle was bought certified pre owned with only 12k miles on the vehicle. At 16k miles (2 months of ownership) the vehicle showed a high voltage battery warning and power train malfunction warning. Three warning lights were displayed on the dash which were: a yellow turtle, wrench, and car with exclamation. Vehicle was taken to service department where they ran updates and said the issue was a one pedal drive error and ran a standard osp for a power train update (not related to this power train issue). They made no mention of the battery and power train issue on the service record. 1-2 weeks later and about 1k miles, the same issue repeated. The vehicle was taken to a different dealership where they indicated the car had a over heating charge coupler and unbalanced battery "A". Both of these show a probable issue with the HVBJB. The dealership has been insistent that they can't do anything without a stored code. Prior OSP's updated the car to limit power when contactors in the HVBJB exceeded .5 ohms and would show all the warnings we have seen. The main 12 volt battery was replaced at 1k miles, which Ford did not realize the failure could have been from the HVBJB, as it receives charge from the primary batteries. The dealership and Ford engineers have requested that we drive the vehicle until the safety lights repeat, knowing that this puts us in danger of a larger malfunction that could result in complete loss of power while driving. They say that they cannot work on an issue unless a code is tripped. I suspect a code will not trip as the first two times nothing was stored and the OSP patch that NHSTS requested helps prevent the complete failure. The code will only be stored in a complete failure event, which could lead to an accident. There are current recalls for this HVBJB, however it is only for the higher end models. Out of space :) Thanks

NHTSA ODI #11620777

Mileage unknown · Aug 14, 2024
Electrical SystemFuel/propulsion SystemPower Train

Driving in a 40mph zone and car suddenly lost all power followed by a message stop safetly now and the 12v battery icon. While coasting car lost power steering and upon stopping went into park and would not go into neutral for 30+ minutes

NHTSA ODI #11608571

Mileage unknown · Jun 1, 2024
Power Train

This car has had multiple recalls and issues with the power train. It has affected my safety on multiple instances. The cars sensors went out die to the batter overheating and it was having trouble delivering power to the sensors and other parts of the vehicle. When the sensors went out, the car would malfunction and it would th…

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This car has had multiple recalls and issues with the power train. It has affected my safety on multiple instances. The cars sensors went out die to the batter overheating and it was having trouble delivering power to the sensors and other parts of the vehicle. When the sensors went out, the car would malfunction and it would think we are about to crash so it would break on its own and do other weird technical things. When the battery overheats it also does not allow effect cooling of vehicle and I live in a state that is very hot. I have reported these issues to the dealer multiple times, but Ford has not put out a remedy for this issue yet.

NHTSA ODI #11591930

Mileage unknown · May 28, 2024
Electrical SystemEnginePower Train

On April 19th, I picked up dinner and when I went to leave the parking lot, my vehicle turned on, but did not allow me to move out of park, nor shift into any other gear. I turned the vehicle on and off about ten times to see whether that might allow me to shift into another gear, but to no avail. It was later in the evening, so…

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On April 19th, I picked up dinner and when I went to leave the parking lot, my vehicle turned on, but did not allow me to move out of park, nor shift into any other gear. I turned the vehicle on and off about ten times to see whether that might allow me to shift into another gear, but to no avail. It was later in the evening, so when I called the Ford customer service line I received an after hours message, and then thereafter I received a call from a Ford customer service center caller saying that they saw I was "stranded" and would send a tow truck to take the vehicle to the nearest Ford mechanic shop. They picked the vehicle up around 11pm in the evening. While the vehicle has had numerous other recalls, (windshield, etc.) I had not received any recall notice related to a battery issue. The dashboard showed a wrench in a car symbol as well as the battery symbol and a note that said "Stop safely now," and "full accessory power active." For the two and a half weeks following, I was not told what was wrong with the vehicle, nor was I provided a courtesy car. When I requested rental coverage, I was informed I would have to call "corporate" in order for them to cover the request, and when I did reach them, I was told that until they diagnosed the vehicle, they could not tell me whether it was my fault or theirs. After weeks of going back and forth, they agreed to cover a Ford rental (that I had to find on my own,) but have still not been given my vehicle as I have been informed that there are program wide software holds on the vehicle that prevent the technician from working on it. My lease ends in another month, and I have not been provided any information as to what my options are, or whether the vehicle will be fixed. I was also informed that I was not eligible for the Ford repurchase program as the vehicle is over the allotted 2 year/24K mile period, but I am extremely frustrated by the lack of care Ford has shown for my safety and ability to get around.

NHTSA ODI #11591105

Mileage unknown · May 8, 2024
Power Train

I experienced the issue described in NHTSA Campaign Number: 23V687000. I had loss of power on the highway. I felt that my safety was at risk immediately after I lost power on the highway where other drivers were driving 60-80 mph. I managed to pull to the side of the road and waited in excess of 2 hours for a tow truck issued by…

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I experienced the issue described in NHTSA Campaign Number: 23V687000. I had loss of power on the highway. I felt that my safety was at risk immediately after I lost power on the highway where other drivers were driving 60-80 mph. I managed to pull to the side of the road and waited in excess of 2 hours for a tow truck issued by Ford to arrive. The issue was confirmed at the dealer. The reason for my complaint is that I made an appointment with Ford for 4/16 and was told the parts would arrive in 3-5 business days. After 9 business days, the parts still had not arrived, and I experienced the issue that I was hoping to avoid.

NHTSA ODI #11587756

Mileage unknown · May 8, 2024
Power Train

After reversing, I changed the gear to drive and then the car suddenly accelerated and continued doing so. I was about to crash into another car until I pressed the brake when the car came to a stop. This is the second or third time this has happened with the most recent instance being most concerning as the speed was increasing…

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After reversing, I changed the gear to drive and then the car suddenly accelerated and continued doing so. I was about to crash into another car until I pressed the brake when the car came to a stop. This is the second or third time this has happened with the most recent instance being most concerning as the speed was increasing with time. I did not have my foot on the accelerator during this time nor was the car in cruise control.

NHTSA ODI #11587751

Mileage unknown · Nov 5, 2023
Electrical SystemPower Train

This is the second HVJB failure on my mustangs Mach e. I was told my last replacement was the upgraded unit. It last as long as my last one.

NHTSA ODI #11553654

Mileage unknown · Nov 4, 2023
Electrical SystemForward Collision AvoidancePower Train

This is becoming a common occurrence with this vehicle. The power train/ front end collision sensor/ tire sensor/ air bay sensor/ drive train all malfunctioning. Ford refuses to help.

NHTSA ODI #11553604

Official recalls

13

26V417000 · Power Train:driveline:differential Unit

Jun 30, 2026

Ford Motor Company (Ford) is recalling certain 2021-2023 Mustang Mach E vehicles. The rear differential pinion shaft may fracture.

Consequence & remedy

Consequence: Differential pinion shaft fracture may result in a loss of drive power, or unintended vehicle movement if the vehicle is in park without the parking brake applied, increasing the risk of a crash.

Remedy: Dealers will repair or replace the rear differential assembly as necessary, free of charge. Interim letters, notifying owners of the safety risk, were mailed July 13, 2026. Additional letters will be sent once the remedy is available, anticipated in late December 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26S50.

25V513000 · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module

Aug 8, 2025

Ford Motor Company (Ford) is recalling certain 2021 Mach-E vehicles that were repaired incorrectly under recall 24V777. An Over-The-Air (OTA) update to the Anti-lock Braking System (ABS) may result in a loss of power brake assist, ABS, Electronic Stability Control, Traction Control, and driver assistance features.

Consequence & remedy

Consequence: A loss of power brake assist can increase the distance required to stop the vehicle. Additionally, a disabled antilock brake system and/or stability control system can result in a loss of vehicle control. Either of these scenarios can increase the risk of a crash.

Remedy: Dealers will update the ABS calibration software, free of charge. Owner notification letters were mailed September 18, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S81.

25V404000 · Electrical System:body Control Module:software; Latches/locks/linkages:doors:latch

Jun 13, 2025

Ford Motor Company (Ford) is recalling certain 2021-2025 Mustang Mach E vehicles. In the event of a low battery charge, the electronic door latches may remain locked once the driver or front passenger exits and shuts the door, possibly trapping someone who is unable to use the inside door release handles, such as a child in the back seat.

Consequence & remedy

Consequence: The inability to enter or exit the vehicle in an emergency increases the risk of injury.

Remedy: Dealers will update the Powertrain Control Module (PCM) and the Secondary On-Board Diagnostic Control Module C (SOBDMC) software, free of charge. Owner notification letters were mailed to 2021-2025 Mustang Mach-E owners September 12, 2025. Additionally, Owner notification letters were mailed to 2024-2025 Mustang Mach-E owners July 10, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S65.

Additional source detail variants (2)

Electrical System:body Control Module:software

Ford Motor Company (Ford) is recalling certain 2021-2025 Mustang Mach E vehicles. In the event of a low battery charge, the electronic door latches may remain locked once the driver or front passenger exits and shuts the door, possibly trapping someone who is unable to use the inside door release handles, such as a child in the back seat.

Consequence: The inability to enter or exit the vehicle in an emergency increases the risk of injury.

Remedy: Dealers will update the Powertrain Control Module (PCM) and the Secondary On-Board Diagnostic Control Module C (SOBDMC) software, free of charge. Owner notification letters were mailed to 2021-2025 Mustang Mach-E owners September 12, 2025. Additionally, Owner notification letters were mailed to 2024-2025 Mustang Mach-E owners July 10, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S65.

Latches/locks/linkages:doors:latch

Ford Motor Company (Ford) is recalling certain 2021-2025 Mustang Mach E vehicles. In the event of a low battery charge, the electronic door latches may remain locked once the driver or front passenger exits and shuts the door, possibly trapping someone who is unable to use the inside door release handles, such as a child in the back seat.

Consequence: The inability to enter or exit the vehicle in an emergency increases the risk of injury.

Remedy: Dealers will update the Powertrain Control Module (PCM) and the Secondary On-Board Diagnostic Control Module C (SOBDMC) software, free of charge. Owner notification letters were mailed to 2021-2025 Mustang Mach-E owners September 12, 2025. Additionally, Owner notification letters were mailed to 2024-2025 Mustang Mach-E owners July 10, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S65.

25V315000 · Back Over Prevention:software

May 9, 2025

Ford Motor Company (Ford) is recalling certain 2021-2024 Bronco, F-150, 2021-2024 Edge, 2022-2025 Escape, F-250, F-350, F-450, F-550, F-600, 2022-2024 Expedition, 2022-2025 Transit, 2021-2023 Mach-E, 2024 Ranger, Mustang, 2021-2023 Lincoln Nautilus, 2022-2024 Navigator, and 2023-2024 Corsair vehicles. A software error may cause the rearview camera image to delay, freeze, or not display when the vehicle is in reverse.

Consequence & remedy

Consequence: A frozen or missing rearview camera image can reduce the driver's view behind the vehicle, increasing the risk of a crash.

Remedy: The accessory protocol interface module (APIM) software will be updated by a dealer or through an over-the-air update, free of charge. This will be a phased campaign, with the remedy becoming available in different phases based on model and model years. Interim letters notifying owners of the safety risk were mailed on June 26, 2025. Additional letters will be mailed once the final remedy is available on each phase. Owner notification letters were sent on October 8, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S49.

25V130000 · Electrical System:propulsion System:traction Battery:management System/energy Control Module (bms/becm):software

Feb 28, 2025

Ford Motor Company (Ford) is recalling certain 2021-2022 Mustang Mach-E vehicles previously repaired incorrectly under recall number 22V-412. The high voltage battery main contactors may overheat.

Consequence & remedy

Consequence: An overheated high voltage battery contactor may cause the vehicle to lose drive power, increasing the risk of a crash.

Remedy: Dealers will update the on-board software, free of charge. Owner notification letters were mailed April 11, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25S14.

24V777000 · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module

Oct 18, 2024

Ford Motor Company (Ford) is recalling certain 2021 Mach-E vehicles. An Over-The-Air (OTA) update to the Anti-lock Braking System (ABS) may result in a loss of power brake assist, ABS, Electronic Stability Control, Traction Control, and driver assistance features.

Consequence & remedy

Consequence: A loss of power brake assist can extend the distance required to stop the vehicle. Additionally, a disabled antilock brake system and/or stability control system can result in a loss of vehicle control. Either of these scenarios can increase the risk of a crash.

Remedy: Dealers will update the ABS calibration, free of charge. Owner notification letters were mailed November 5, 2024. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 24S65.

23V687000 · Electrical System:propulsion System:traction Battery:management System/energy Control Module (bms/becm)

Oct 13, 2023

Ford Motor Company (Ford) is recalling certain 2021-2022 Mustang Mach-E vehicles equipped with an extended range battery. The high voltage battery main contactors may overheat.

Consequence & remedy

Consequence: An overheated high voltage battery contactor can result in a loss of drive power, increasing the risk of a crash.

Remedy: Dealers will replace the high voltage battery junction box, free of charge. Owner notification letters were mailed December 29, 2023. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 23S56. Vehicles included in this recall that were previously repaired under recall 22V-412 will need to have the new remedy completed.

22V412000 · Electrical System:propulsion System:traction Battery:management System/energy Control Module (bms/becm):software

Jun 10, 2022

Ford Motor Company (Ford) is recalling certain 2021-2022 Mustang Mach-E vehicles. The high voltage battery main contactors may overheat.

Consequence & remedy

Consequence: An overheated high voltage battery contactor may cause the vehicle to lose drive power, increasing the risk of a crash.

Remedy: Dealers will update the on-board software, free of charge. Owner notification letters were mailed on July 8, 2022. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 22S41.

22V333000 · Power Train:automatic Transmission:control Module:software; Vehicle Speed Control

May 13, 2022

Ford Motor Company (Ford) is recalling certain 2021 Mustang Mach-E vehicles equipped with all-wheel drive. The powertrain control module (PCM) functional safety software may fail to detect a software error, resulting in unintended acceleration, unintended deceleration, or a loss of drive power.

Consequence & remedy

Consequence: Unintended acceleration, unintended deceleration, or a loss of drive power increases the risk of a crash.

Remedy: The PCM software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed June 9, 2022. Owners may contact Ford customer service at 1-800-436-7332. Ford's number for this recall is 22S29.

Additional source detail variants (2)

Power Train:automatic Transmission:control Module:software

Ford Motor Company (Ford) is recalling certain 2021 Mustang Mach-E vehicles equipped with all-wheel drive. The powertrain control module (PCM) functional safety software may fail to detect a software error, resulting in unintended acceleration, unintended deceleration, or a loss of drive power.

Consequence: Unintended acceleration, unintended deceleration, or a loss of drive power increases the risk of a crash.

Remedy: The PCM software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed June 9, 2022. Owners may contact Ford customer service at 1-800-436-7332. Ford's number for this recall is 22S29.

Vehicle Speed Control

Ford Motor Company (Ford) is recalling certain 2021 Mustang Mach-E vehicles equipped with all-wheel drive. The powertrain control module (PCM) functional safety software may fail to detect a software error, resulting in unintended acceleration, unintended deceleration, or a loss of drive power.

Consequence: Unintended acceleration, unintended deceleration, or a loss of drive power increases the risk of a crash.

Remedy: The PCM software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed June 9, 2022. Owners may contact Ford customer service at 1-800-436-7332. Ford's number for this recall is 22S29.

21V979000 · Seat Belts:rear/other:anchorage

Dec 16, 2021

Ford Motor Company (Ford) is recalling certain 2021-2022 Mustang Mach-E and 2022 Maverick vehicles. The rear seat belt buckles may not be properly attached to the rear floor assembly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 208, "Occupant Crash Protection," and 210, "Seat Belt Assembly Anchorages."

Consequence & remedy

Consequence: Improperly attached seat belts may not adequately restrain an occupant in a crash, increasing the risk of injury.

Remedy: Dealers will repair the rear seat belt buckle attachments, free of charge. Owner notification letters were mailed January 28, 2022. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21C36.

21V711000 · Visibility:windshield; Visibility:windshield:critical Fasteners

Sep 14, 2021

Ford Motor Company (Ford) is recalling certain 2021 Mustang Mach-E vehicles. The windshield may not have been properly bonded to the vehicle, which could allow it to detach. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 212, "Windshield Mounting."

Consequence & remedy

Consequence: A windshield that separates from a vehicle during a crash can increase the risk of injury.

Remedy: Dealers will remove and reinstall the windshield, free of charge. Owner notification letters were mailed on October 29, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21C22.

Additional source detail variants (2)

Visibility:windshield:critical Fasteners

Ford Motor Company (Ford) is recalling certain 2021 Mustang Mach-E vehicles. The windshield may not have been properly bonded to the vehicle, which could allow it to detach. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 212, "Windshield Mounting."

Consequence: A windshield that separates from a vehicle during a crash can increase the risk of injury.

Remedy: Dealers will remove and reinstall the windshield, free of charge. Owner notification letters were mailed on October 29, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21C22.

Visibility:windshield

Ford Motor Company (Ford) is recalling certain 2021 Mustang Mach-E vehicles. The windshield may not have been properly bonded to the vehicle, which could allow it to detach. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 212, "Windshield Mounting."

Consequence: A windshield that separates from a vehicle during a crash can increase the risk of injury.

Remedy: Dealers will remove and reinstall the windshield, free of charge. Owner notification letters were mailed on October 29, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21C22.

21V712000 · Visibility:fixed Panaramic Roof/sky Light Assembly

Sep 14, 2021

Ford Motor Company (Ford) is recalling certain 2021 Mustang Mach-E vehicles. The vehicle's panoramic roof glass panel may not have been properly bonded to the vehicle, which could allow it to detach.

Consequence & remedy

Consequence: A roof panel that separates from a vehicle can become a road hazard, increasing the risk of a crash or injury.

Remedy: Dealers will apply additional urethane adhesive, free of charge. Owner notification letters were mailed October 29, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21S42.

21V140000 · Structure:frame And Members; Suspension:subframe/mounting Bracket

Mar 5, 2021

Ford Motor Company (Ford) is recalling certain 2021 Mustang Mach-E vehicles. The front subframe bolts may not have been tightened properly during assembly, which could result in loose bolts.

Consequence & remedy

Consequence: Loose subframe bolts may reduce the vehicle's performance in a crash, increasing the risk of injury.

Remedy: Ford will notify owners, and dealers will inspect the front subframe bolts and tighten them as necessary, free of charge. The recall began April 2, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21S09.

Additional source detail variants (2)

Structure:frame And Members

Ford Motor Company (Ford) is recalling certain 2021 Mustang Mach-E vehicles. The front subframe bolts may not have been tightened properly during assembly, which could result in loose bolts.

Consequence: Loose subframe bolts may reduce the vehicle's performance in a crash, increasing the risk of injury.

Remedy: Ford will notify owners, and dealers will inspect the front subframe bolts and tighten them as necessary, free of charge. The recall began April 2, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21S09.

Suspension:subframe/mounting Bracket

Ford Motor Company (Ford) is recalling certain 2021 Mustang Mach-E vehicles. The front subframe bolts may not have been tightened properly during assembly, which could result in loose bolts.

Consequence: Loose subframe bolts may reduce the vehicle's performance in a crash, increasing the risk of injury.

Remedy: Ford will notify owners, and dealers will inspect the front subframe bolts and tighten them as necessary, free of charge. The recall began April 2, 2021. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 21S09.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

4

EA25001 · Collisions Involving Ford Bluecruise

Opened Jan 17, 2025 · No close date supplied

Status: open (inferred from source dates) · Electrical System:adas

On April 25, 2024, NHTSA’s Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE24012) to assess BlueCruise, a partial driving automation system available on certain vehicles manufactured by Ford Motor Company (Ford). NHTSA opened the investigation after the agency received notice of two fatal collisions involving BlueCruise-equipped Ford Mustang Mach-E vehicles. Based on the incidents, NHTSA scoped the investigation to 2021-2024 Mustang Mach-E vehicles equipped with BlueCruise. In June 2024, ODI sent an Information Request (IR) letter to Ford requiring that it provide certain information pertaining to crashes, non-crash reports, and technical specifications that relate to BlueCruise, as well as other Ford partial driving automation systems that offer lane and speed maintenance. In its response to ODI’s IR, Ford stated that there are 2,539,962 Ford and Lincoln vehicles (including subject and peer vehicles) equipped with a partial driving automation system within the scope of the request. The majority of these vehicles are equipped with a system that Ford calls Lane Centering Assist (LCA), which is a hands-on partial driving automation system that combines longitudinal control authority governed by Adaptive Cruise Control (ACC) and lateral control authority governed by a steerable path. LCA is offered on a wide range of Ford and Lincoln models beginning in model year 2019. Vehicles that are equipped with BlueCruise, the focus of this investigation, have LCA capability and additionally offer hands-free partial driving automation when certain conditions are met. Hands-free BlueCruise operation is only offered on certain roadways and system availability is geofenced using vehicle GPS. BlueCruise-equipped vehicles employ a camera-based driver monitoring system to determine driver attentiveness to the roadway. BlueCruise was introduced in model year 2021 and is currently available in a select range of Ford and Lincoln vehicles. For BlueCruise- and LCA-equipped vehicles, both ACC and Pre-Collision Assist (PCA) features use a combination of camera and radar sensing technologies to detect and classify objects. ACC is specifically designed to detect vehicles (including cars, trucks, and motorcycles) and bicycles in front of the subject vehicle which are either stationary or moving in the same direction as the subject vehicle. Through this investigation, limitations in the detection of stationary vehicles in certain conditions have been identified. Specifically, due to the potential for false detection of stationary objects at long distances, Ford designed ACC to inhibit any response to reported stationary objects when the subject vehicle’s approach speed is at or above 62 mph. Additionally, system performance may be limited when there is poor visibility due to insufficient illumination. In addition to reviewing Ford’s response to ODI’s IR, the agency conducted a review of crash and non-crash reports identified collectively through Ford’s IR response, incident reporting through Standing General Order 2021-01 (SGO), and NHTSA vehicle owner questionnaires. In total, 32 crashes and 2,004 non-crash reports on subject and peer Ford vehicles were identified across manufacturer and ODI data sources. A detailed analysis of each crash was conducted including the review of any available police reports, photographs, data recovered from in-vehicle event data recorders, connected vehicle data, and/or other information. In both fatal collisions referenced in the PE24012 opening resume, the subject Ford Mustang Mach-E vehicle was traveling over 70 mph on a controlled-access highway during nighttime lighting conditions with hands-free BlueCruise engaged when it collided with a stationary vehicle. Analysis of data imaged from the vehicles’ event data recorders demonstrates that in each incident, the driver did not apply the brakes or take evasive steering action, and no deceleration was initiated by either the BlueCruise system or PCA prior to impact. Through the agency’s crash analysis, four additional frontal collisions were identified where the subject Ford impacted a stopped or slow-moving lead vehicle or another stationary object located in the travel lane. Two of these four incidents involved BlueCruise-equipped Ford Mustang Mach-E vehicles (included in the failure report summary along with the fatal collisions discussed above), while the other two involved other Ford models equipped with the LCA system. Additionally, a trend was identified through analysis of the non-crash reports relating to allegations that ACC (the longitudinal component of both BlueCruise and LCA) failed to detect and/or respond to a stopped or slow-moving lead vehicle. In these reports, consumers often describe that the absence of deceleration initiated by ACC was unexpected and required harsh manual braking or intervention from the PCA to avoid a frontal collision with the lead vehicle. Based on NHTSA’s analysis, system limitations relating to the detection of stationary vehicles while traveling at highway speeds and in nighttime lighting conditions appear to be factors in collisions under investigation and several apparently similar near-miss, non-crash reports. This Engineering Analysis (EA) is being opened to further investigate these system limitations and to evaluate drivers’ ability to respond to scenarios that exceed system limitations. During the EA, the agency expects to, among other things, perform vehicle evaluations, review additional technical information, and perform additional analysis of related crashes and non-crash reports. The crashes included in the failure report summary can be found at NHTSA.gov under the following SGO report identification numbers: 502-7268, 502-7426, 502-6852, 502-8738.

PE24012 · Collisions Involving Ford Bluecruise

Opened Apr 25, 2024 · Closed Jan 17, 2025

Status: closed (inferred from source dates) · Electrical System:adas

On April 25, 2024, NHTSA’s Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE24012) to assess BlueCruise, a partial driving automation system available on certain vehicles manufactured by Ford Motor Company (Ford). NHTSA opened the investigation after the agency received notice of two fatal collisions involving BlueCruise-equipped Ford Mustang Mach-E vehicles. Based on the incidents, NHTSA scoped the investigation to 2021-2024 Mustang Mach-E vehicles equipped with BlueCruise. In June 2024, ODI sent an Information Request (IR) letter to Ford requiring that it provide certain information pertaining to crashes, non-crash reports, and technical specifications that relate to BlueCruise, as well as other Ford partial driving automation systems that offer lane and speed maintenance. In its response to ODI’s IR, Ford stated that there are 2,539,962 Ford and Lincoln vehicles (including subject and peer vehicles) equipped with a partial driving automation system within the scope of the request. The majority of these vehicles are equipped with a system that Ford calls Lane Centering Assist (LCA), which is a hands-on partial driving automation system that combines longitudinal control authority governed by Adaptive Cruise Control (ACC) and lateral control authority governed by a steerable path. LCA is offered on a wide range of Ford and Lincoln models beginning in model year 2019. Vehicles that are equipped with BlueCruise, the focus of this investigation, have LCA capability and additionally offer hands-free partial driving automation when certain conditions are met. Hands-free BlueCruise operation is only offered on certain roadways and system availability is geofenced using vehicle GPS. BlueCruise-equipped vehicles employ a camera-based driver monitoring system to determine driver attentiveness to the roadway. BlueCruise was introduced in model year 2021 and is currently available in a select range of Ford and Lincoln vehicles. For BlueCruise- and LCA-equipped vehicles, both ACC and Pre-Collision Assist (PCA) features use a combination of camera and radar sensing technologies to detect and classify objects. ACC is specifically designed to detect vehicles (including cars, trucks, and motorcycles) and bicycles in front of the subject vehicle which are either stationary or moving in the same direction as the subject vehicle. Through this investigation, limitations in the detection of stationary vehicles in certain conditions have been identified. Specifically, due to the potential for false detection of stationary objects at long distances, Ford designed ACC to inhibit any response to reported stationary objects when the subject vehicle’s approach speed is at or above 62 mph. Additionally, system performance may be limited when there is poor visibility due to insufficient illumination. In addition to reviewing Ford’s response to ODI’s IR, the agency conducted a review of crash and non-crash reports identified collectively through Ford’s IR response, incident reporting through Standing General Order 2021-01 (SGO), and NHTSA vehicle owner questionnaires. In total, 32 crashes and 2,004 non-crash reports on subject and peer Ford vehicles were identified across manufacturer and ODI data sources. A detailed analysis of each crash was conducted including the review of any available police reports, photographs, data recovered from in-vehicle event data recorders, connected vehicle data, and/or other information. In both fatal collisions referenced in the PE24012 opening resume, the subject Ford Mustang Mach-E vehicle was traveling over 70 mph on a controlled-access highway during nighttime lighting conditions with hands-free BlueCruise engaged when it collided with a stationary vehicle. Analysis of data imaged from the vehicles’ event data recorders demonstrates that in each incident, the driver did not apply the brakes or take evasive steering action, and no deceleration was initiated by either the BlueCruise system or PCA prior to impact. Through the agency’s crash analysis, four additional frontal collisions were identified where the subject Ford impacted a stopped or slow-moving lead vehicle or another stationary object located in the travel lane. Two of these four incidents involved BlueCruise-equipped Ford Mustang Mach-E vehicles (included in the failure report summary along with the fatal collisions discussed above), while the other two involved other Ford models equipped with the LCA system. Additionally, a trend was identified through analysis of the non-crash reports relating to allegations that ACC (the longitudinal component of both BlueCruise and LCA) failed to detect and/or respond to a stopped or slow-moving lead vehicle. In these reports, consumers often describe that the absence of deceleration initiated by ACC was unexpected and required harsh manual braking or intervention from the PCA to avoid a frontal collision with the lead vehicle. Based on NHTSA’s analysis, system limitations relating to the detection of stationary vehicles while traveling at highway speeds and in nighttime lighting conditions appear to be factors in collisions under investigation and several apparently similar near-miss, non-crash reports. This Preliminary Evaluation is being upgraded to an Engineering Analysis (EA25001) to further investigate these system limitations and to evaluate drivers’ ability to respond to scenarios that exceed system limitations. During the EA, the agency expects to, among other things, perform vehicle evaluations, review additional technical information, and perform additional analysis of related crashes and non-crash reports. The crashes included in the failure report summary can be found at NHTSA.gov under the following SGO report identification numbers: 502-7268, 502-7426, 502-6852, 502-8738.

RQ23004 · High Voltage Battery Contactor Failure

Opened Aug 17, 2023 · Closed Dec 6, 2023

Status: closed (inferred from source dates) · Electrical System:propulsion System:traction Battery:management System/energy Control Module (bms/becm):software; Engine And Engine Cooling:engine:engine Control Module (ecu/ecm):software

On August 17, 2023, the Office of Defects Investigations (ODI) opened RQ23-004 to investigate instances of loss of motor power due to overheating high voltage battery contactors in model year (MY) 2021-2022 Ford Mustang Mach-E vehicles (subject vehicles). This Recall Query (RQ) was opened after receiving 12 consumer complaints alleging a high voltage battery main contactor failure in subject vehicles that were included in Recall 22V-412 and remedied prior to the reported incidents. The remedy in 22V-412 was a Secondary On-Board Diagnostic Control Module (SOBDMC) software update to monitor contactor temperature and reduce battery power to prevent damage to the contactor, and a Battery Energy Control Module (BECM) software update to monitor contactor resistance to identify an overheated contactor and reduce vehicle power to prevent further damage. On October 13, 2023, Ford filed Recall 23V-687 of 34,762 2021-2022 Ford Mustang Mach-E vehicles produced from May 27, 2020 to May 24, 2022 with recalled Bussed Electrical Center parts NK48-10C666-AA, NK48-10C666-BA, or LK98-10C666-AB. Affected vehicles are equipped with the extended range battery. Ford stated that preexisting damage to the contactors caused by heat and accumulated wear may reduce the effectiveness of the software update remedy in 22V-412. The remedy of 23V-687 is to complete a replacement of the Bussed Electrical Center, or High Voltage Battery Junction Box. In addition, Ford stated that subject vehicles equipped with standard range batteries, in comparison to vehicles equipped with extended range batteries, are less at risk of experiencing this failure due to their smaller battery capacity and lower output electric drive motors. In view of the recall action taken by Ford, ODI is closing this investigation. ODI will continue to monitor reports of this failure in both extended range and standard range models. The Agency reserves the right to take additional action if warranted by future circumstances. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.

Additional source detail variants (2)

Electrical System:propulsion System:traction Battery:management System/energy Control Module (bms/becm):software

On August 17, 2023, the Office of Defects Investigations (ODI) opened RQ23-004 to investigate instances of loss of motor power due to overheating high voltage battery contactors in model year (MY) 2021-2022 Ford Mustang Mach-E vehicles (subject vehicles). This Recall Query (RQ) was opened after receiving 12 consumer complaints alleging a high voltage battery main contactor failure in subject vehicles that were included in Recall 22V-412 and remedied prior to the reported incidents. The remedy in 22V-412 was a Secondary On-Board Diagnostic Control Module (SOBDMC) software update to monitor contactor temperature and reduce battery power to prevent damage to the contactor, and a Battery Energy Control Module (BECM) software update to monitor contactor resistance to identify an overheated contactor and reduce vehicle power to prevent further damage. On October 13, 2023, Ford filed Recall 23V-687 of 34,762 2021-2022 Ford Mustang Mach-E vehicles produced from May 27, 2020 to May 24, 2022 with recalled Bussed Electrical Center parts NK48-10C666-AA, NK48-10C666-BA, or LK98-10C666-AB. Affected vehicles are equipped with the extended range battery. Ford stated that preexisting damage to the contactors caused by heat and accumulated wear may reduce the effectiveness of the software update remedy in 22V-412. The remedy of 23V-687 is to complete a replacement of the Bussed Electrical Center, or High Voltage Battery Junction Box. In addition, Ford stated that subject vehicles equipped with standard range batteries, in comparison to vehicles equipped with extended range batteries, are less at risk of experiencing this failure due to their smaller battery capacity and lower output electric drive motors. In view of the recall action taken by Ford, ODI is closing this investigation. ODI will continue to monitor reports of this failure in both extended range and standard range models. The Agency reserves the right to take additional action if warranted by future circumstances. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.

Engine And Engine Cooling:engine:engine Control Module (ecu/ecm):software

On August 17, 2023, the Office of Defects Investigations (ODI) opened RQ23-004 to investigate instances of loss of motor power due to overheating high voltage battery contactors in model year (MY) 2021-2022 Ford Mustang Mach-E vehicles (subject vehicles). This Recall Query (RQ) was opened after receiving 12 consumer complaints alleging a high voltage battery main contactor failure in subject vehicles that were included in Recall 22V-412 and remedied prior to the reported incidents. The remedy in 22V-412 was a Secondary On-Board Diagnostic Control Module (SOBDMC) software update to monitor contactor temperature and reduce battery power to prevent damage to the contactor, and a Battery Energy Control Module (BECM) software update to monitor contactor resistance to identify an overheated contactor and reduce vehicle power to prevent further damage. On October 13, 2023, Ford filed Recall 23V-687 of 34,762 2021-2022 Ford Mustang Mach-E vehicles produced from May 27, 2020 to May 24, 2022 with recalled Bussed Electrical Center parts NK48-10C666-AA, NK48-10C666-BA, or LK98-10C666-AB. Affected vehicles are equipped with the extended range battery. Ford stated that preexisting damage to the contactors caused by heat and accumulated wear may reduce the effectiveness of the software update remedy in 22V-412. The remedy of 23V-687 is to complete a replacement of the Bussed Electrical Center, or High Voltage Battery Junction Box. In addition, Ford stated that subject vehicles equipped with standard range batteries, in comparison to vehicles equipped with extended range batteries, are less at risk of experiencing this failure due to their smaller battery capacity and lower output electric drive motors. In view of the recall action taken by Ford, ODI is closing this investigation. ODI will continue to monitor reports of this failure in both extended range and standard range models. The Agency reserves the right to take additional action if warranted by future circumstances. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.

DP22005 · Pedestrian Alert Sounds

Opened Jan 27, 2023 · Closed Aug 7, 2023

Status: closed (inferred from source dates) · Electrical System:propulsion System

NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.