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2016 Acura Mdx

Owner reports · Recalls · Investigations

More warning signs than most Mdx years

Owner complaints for the 2016 Acura Mdx are substantially higher than the model-year median of 101.5.

About this comparison →
373Owner complaints

Model-year median: 101.5

7Recall campaigns

View recall details →

3Investigations

View investigation details →

How this year compares

Owner complaints by model year

Other model years Selected year
29
2013170
201470
2015373
2016255
2017165
2018186
2019
Compare all Mdx years →

Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

Engine
161Power Train
111Unknown Or Other
40Electrical System
37Fuel/propulsion System
27
All reported categories
Structure
21Vehicle Speed Control
19Lane Departure
14Service Brakes
13Steering
12Engine And Engine Cooling
10Exterior Lighting
10Forward Collision Avoidance
9Electronic Stability Control (esc)
8Air Bags
7Suspension
7Fuel System, Gasoline
4Visibility/wiper
4Back Over Prevention
2Equipment Adaptive/mobility
2Interior Lighting
2Seat Belts
2Seats
2Wheels
2Tires
1

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

174 reports with mileage · 199 unknown

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.

  • Engine. Review the 161 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 111 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 37 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

10 crash reports5 fire reports5 injury reports

Engine complaints

161 reports
Clear category filter
Mileage unknown · Nov 18, 2024
Electrical SystemEngineSteering

I am [XXX] and I have owned Honda/Acura since I was 16 yrs old. My last vehicle was a Honda Odyssey minivan with 423K when I donated it, running well to a family that fostered kids! I bought a new 2016 Acura MDX and now it is 8 years old and has 180K on it. I get the oil changed and other normal service maintenance done only …

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I am [XXX] and I have owned Honda/Acura since I was 16 yrs old. My last vehicle was a Honda Odyssey minivan with 423K when I donated it, running well to a family that fostered kids! I bought a new 2016 Acura MDX and now it is 8 years old and has 180K on it. I get the oil changed and other normal service maintenance done only at Honda or Acura dealerships. I have never had a car accident and I take care of the maintenance early. All of a sudden, on Friday, [XXX], I had just started driving ( ~20 minutes in the car) and every light started flashing and the car sounded funny and it was hard to drive. I immediately got off the highway and found a repair place (Red's auto repair) right off the exit. They had me shut off the car. Then they checked the oil, which was showing 70%, and I had just had it changed less than 1000 miles earlier, and it had plenty of oil. They told me I could not drive the car! They said "something is wrong with the engine". Currently, LaFontaine Acura has my car. I have a loaner from them. They said it "spun a bearing" in the engine. Apparently there is a recall for this same problem for my year, make and model, but "currently" my VIN number is not included? And, it is the exact same problem bearing from the recall! THIS IS CRAZY! My car has been well taken care of and I would expect it to get at least 350k miles at least before any issues. If the same problem was recalled for other cars, why not mine? It is un-drivable now. I think that Honda has changed their manufacturing because in 43 years of driving Hondas they always are reliable and work well for years and years. My 5 adult kids drive Hondas as well! Never a problem. I think I got a vehicle with a defect that should not be, especially when the car has always been maintained so well, with the service records to show that. PLEASE HELP GET THIS INCLUDED IN THE RECALL FOR SAFETY! What is my next step to ensure that my car is included? Thank you very much INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT

NHTSA ODI #11625941

Mileage unknown · Nov 15, 2024
Engine

I was driving on the interstate going 80 when the car shut off. I coasted to the shoulder and had the car towed to the mechanic shop. The connecting rod broke, going through the engine causing me to need a new engine. When I contacted Acura they said my car wasn’t in the recall even though it’s exactly what was happening to othe…

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I was driving on the interstate going 80 when the car shut off. I coasted to the shoulder and had the car towed to the mechanic shop. The connecting rod broke, going through the engine causing me to need a new engine. When I contacted Acura they said my car wasn’t in the recall even though it’s exactly what was happening to other cars the same year and make as my car.

NHTSA ODI #11625639

Mileage unknown · Nov 13, 2024
Engine

In July of 2024 my vehicle began to make a knocking sound from the engine. I started a claim through my third party warranty company and brought it to a repair shop. The shop informed me about the recall for my model and year vehicle, but my VIN was not included in the recall. It was determined that the connecting rod bearing…

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In July of 2024 my vehicle began to make a knocking sound from the engine. I started a claim through my third party warranty company and brought it to a repair shop. The shop informed me about the recall for my model and year vehicle, but my VIN was not included in the recall. It was determined that the connecting rod bearings failed, and after waiting for 6 weeks the engine was replaced with a used engine from the same year and model vehicle. I drove for about 1900 miles and the engine began knocking again. I returned the to the repair shop and the supplier of the engine provided another used engine. I am terrified that the same problem will occur again and feel the engine can fail at any time.

NHTSA ODI #11625098

Mileage unknown · Nov 13, 2024
Engine

The car began making a front end noise and running shoddy and when we took it to the dealer they had to replace bearings/short block at 121k miles. We were told our VIN was outside of the previous recall so it wouldn’t be covered under that. We ended up paying a portion of that very large bill which inconvenienced our family. We…

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The car began making a front end noise and running shoddy and when we took it to the dealer they had to replace bearings/short block at 121k miles. We were told our VIN was outside of the previous recall so it wouldn’t be covered under that. We ended up paying a portion of that very large bill which inconvenienced our family. We were without our own vehicle for many weeks due to back ordered parts for the major repair. This car has always been serviced by Acura at regular intervals.

NHTSA ODI #11625097

Mileage unknown · Nov 13, 2024
Engine

My 2016 Acura MDX with 113,000 miles on it suddenly experienced engine failure while driving my son to college in Salisbury, MD. The engine lost all power as I was coming off of the highway onto a side street in Salisbury. Fortunately no other vehicles were around me at the time and I was able to drift into a safe parking area…

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My 2016 Acura MDX with 113,000 miles on it suddenly experienced engine failure while driving my son to college in Salisbury, MD. The engine lost all power as I was coming off of the highway onto a side street in Salisbury. Fortunately no other vehicles were around me at the time and I was able to drift into a safe parking area. If it had happened on the highway or in traffic, it could have caused an accident. There were no warning lights on and the vehicle seemed to be running normally right up until it lost power. After having the vehicle towed to an Acura dealership, the mechanic found a broken rod that was likely due to a bad rod bearing. Other 2016 Acura MDX's have been recalled due to a defective rod bearing resulting in engine failure, but my VIN is not covered under the recall. Honda National just confirmed that it will not cover my MDX's repair under the recall. Prior to this, I had done all required maintenance on the vehicle.

NHTSA ODI #11625045

Mileage unknown · Nov 13, 2024
Engine

Car had a failed crankshaft causing a rod bearing issue with the motor. The check engine light came on during use and car was taken to a local repair shop. The independent repair shop determined the issue is associated with recall TSB 24-001, and advised it be transported to a Honda dealership for repair. Honda confirmed that…

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Car had a failed crankshaft causing a rod bearing issue with the motor. The check engine light came on during use and car was taken to a local repair shop. The independent repair shop determined the issue is associated with recall TSB 24-001, and advised it be transported to a Honda dealership for repair. Honda confirmed that although the 2016 is under this recall this specific VIN is not. Car was repaired at Honda dealership with same exact repair kit and work done to fix the TSB 24-001 recall notice. Reached out to Honda customer service to understand why the car was not repaired under this current recall but was not given any additional information, case #14733117.

NHTSA ODI #11625008

Mileage unknown · Nov 13, 2024
Engine

I am the owner of a 2016 Acura MDX Advance. While driving, I noticed an unusual knocking sound coming from the engine, despite no warning lights or error messages prior to this incident. Concerned about the noise, I promptly brought the vehicle to an Acura dealership for inspection. The initial diagnosis revealed a camshaft issu…

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I am the owner of a 2016 Acura MDX Advance. While driving, I noticed an unusual knocking sound coming from the engine, despite no warning lights or error messages prior to this incident. Concerned about the noise, I promptly brought the vehicle to an Acura dealership for inspection. The initial diagnosis revealed a camshaft issue, which was replaced. However, upon reassembly, the technician detected a persistent knock that required further investigation. After a week of detailed inspection, the dealership traced the problem to a defect with the rod bearing, an issue that has been part of previous recalls, though my vehicle was not listed. This rod bearing defect caused significant internal damage to the engine, ultimately requiring a complete short-block replacement to restore proper functionality. While the dealership has since resolved the issue, I am deeply concerned about the safety implications of such a defect. Had the rod bearing failed entirely, it could have led to an engine blowout, risking sudden loss of power at highway speeds and potentially endangering my safety.

NHTSA ODI #11624992

Mileage unknown · Nov 13, 2024
Engine

I was driving my 2016 Acura MDX (approximately 87,000 miles) at around 60 mph on the freeway when the engine began making a metallic clanking noise. Shortly after, the check engine light started flashing, and the vehicle lost acceleration, eventually coming to a complete stop. This created a potentially dangerous situation, but …

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I was driving my 2016 Acura MDX (approximately 87,000 miles) at around 60 mph on the freeway when the engine began making a metallic clanking noise. Shortly after, the check engine light started flashing, and the vehicle lost acceleration, eventually coming to a complete stop. This created a potentially dangerous situation, but I was fortunately able to pull over safely. After the vehicle stopped, the engine would not restart. The mechanic who inspected the vehicle confirmed that the engine has seized. This incident occurred without any prior warning signs and could have resulted in a severe accident. I believe this issue poses a significant safety risk to drivers and passengers. I request an investigation into whether this problem could be due to a manufacturing defect or systemic issue with this model.

NHTSA ODI #11624985

Mileage unknown · Nov 13, 2024
Engine

Failure of connecting rod bearings leading to complete engine failure.

NHTSA ODI #11624946

Mileage unknown · Nov 12, 2024
Engine

I was driving back yo my home with my family and on freeway Acura MDX engine stopped with clanking metallic sound fortunately I was able to stop safely. This VIN [XXX] should be part of recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI #11624823

Official recalls

7

26V365000 · Structure:frame And Members; Suspension:rear

Jun 4, 2026

American Honda Motor Company (Honda) is recalling certain 2016-2022 Honda Pilot, 2017-2023 Ridgeline, 2019-2023 Passport, and 2014-2020 Acura MDX vehicles that were sold in Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, or Wisconsin. The rear subframe may corrode at the suspension mounting points, which can result in rear suspension component failure.

Consequence & remedy

Consequence: Failure of rear suspension components, such as the rear control arm, can cause a loss of vehicle handling and control, increasing the risk of a crash or injury.

Remedy: Dealers will inspect the rear subframe and install a rear subframe reinforcement kit and, as necessary, repair or replace the rear subframe components, free of charge. Interim letters notifying owners of the safety risk were mailed July 27, 2026. Additional letters will be sent once the final remedy is available, anticipated in the fall of 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are AOU and AOT. Vehicle Identification Numbers (VINs) involved in this recall will become searchable on NHTSA.gov beginning June 10, 2026.

Additional source detail variants (2)

Suspension:rear

American Honda Motor Company (Honda) is recalling certain 2016-2022 Honda Pilot, 2017-2023 Ridgeline, 2019-2023 Passport, and 2014-2020 Acura MDX vehicles that were sold in Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, or Wisconsin. The rear subframe may corrode at the suspension mounting points, which can result in rear suspension component failure.

Consequence: Failure of rear suspension components, such as the rear control arm, can cause a loss of vehicle handling and control, increasing the risk of a crash or injury.

Remedy: Dealers will inspect the rear subframe and install a rear subframe reinforcement kit and, as necessary, repair or replace the rear subframe components, free of charge. Interim letters notifying owners of the safety risk were mailed July 27, 2026. Additional letters will be sent once the final remedy is available, anticipated in the fall of 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are AOU and AOT. Vehicle Identification Numbers (VINs) involved in this recall will become searchable on NHTSA.gov beginning June 10, 2026.

Structure:frame And Members

American Honda Motor Company (Honda) is recalling certain 2016-2022 Honda Pilot, 2017-2023 Ridgeline, 2019-2023 Passport, and 2014-2020 Acura MDX vehicles that were sold in Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, or Wisconsin. The rear subframe may corrode at the suspension mounting points, which can result in rear suspension component failure.

Consequence: Failure of rear suspension components, such as the rear control arm, can cause a loss of vehicle handling and control, increasing the risk of a crash or injury.

Remedy: Dealers will inspect the rear subframe and install a rear subframe reinforcement kit and, as necessary, repair or replace the rear subframe components, free of charge. Interim letters notifying owners of the safety risk were mailed July 27, 2026. Additional letters will be sent once the final remedy is available, anticipated in the fall of 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are AOU and AOT. Vehicle Identification Numbers (VINs) involved in this recall will become searchable on NHTSA.gov beginning June 10, 2026.

25V259000 · Exterior Lighting; Interior Lighting

Apr 17, 2025

Honda (American Honda Motor Co.) is recalling certain 2014-2020 Acura MDX vehicles. Moisture may enter the tailgate lid light assembly and wiring harness, which can cause the interior and exterior lights to fail, including the lid lights, position lights, license plate lights and taillights.

Consequence & remedy

Consequence: Vehicle lights that fail to illuminate can decrease visibility and increase the risk of a crash.

Remedy: Dealers will inspect the wiring and install a fuse harness, replace the lid light, and repair the body dust sealer, as necessary, free of charge. Owner notification letters were mailed May 30, 2025. Owners may contact Acura's customer service at 1-800-382-2238. Acura's number for this recall is FLI. Vehicles included in this recall that were previously repaired under NHTSA recall number 19V-256 will need to have the new remedy completed.

Additional source detail variants (2)

Interior Lighting

Honda (American Honda Motor Co.) is recalling certain 2014-2020 Acura MDX vehicles. Moisture may enter the tailgate lid light assembly and wiring harness, which can cause the interior and exterior lights to fail, including the lid lights, position lights, license plate lights and taillights.

Consequence: Vehicle lights that fail to illuminate can decrease visibility and increase the risk of a crash.

Remedy: Dealers will inspect the wiring and install a fuse harness, replace the lid light, and repair the body dust sealer, as necessary, free of charge. Owner notification letters were mailed May 30, 2025. Owners may contact Acura's customer service at 1-800-382-2238. Acura's number for this recall is FLI. Vehicles included in this recall that were previously repaired under NHTSA recall number 19V-256 will need to have the new remedy completed.

Exterior Lighting

Honda (American Honda Motor Co.) is recalling certain 2014-2020 Acura MDX vehicles. Moisture may enter the tailgate lid light assembly and wiring harness, which can cause the interior and exterior lights to fail, including the lid lights, position lights, license plate lights and taillights.

Consequence: Vehicle lights that fail to illuminate can decrease visibility and increase the risk of a crash.

Remedy: Dealers will inspect the wiring and install a fuse harness, replace the lid light, and repair the body dust sealer, as necessary, free of charge. Owner notification letters were mailed May 30, 2025. Owners may contact Acura's customer service at 1-800-382-2238. Acura's number for this recall is FLI. Vehicles included in this recall that were previously repaired under NHTSA recall number 19V-256 will need to have the new remedy completed.

23V858000 · Fuel System, Gasoline:delivery:fuel Pump

Dec 18, 2023

Honda (American Honda Motor Co.) is recalling certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, CR-V, HR-V, Ridgeline, Odyssey, Acura ILX, MDX, MDX Hybrid, RDX, RLX, TLX, 2019-2022 Honda Insight, Passport, 2020 Honda CR-V Hybrid, 2018-2019 Honda Clarity PHEV, Fit, and 2015-2020 Honda Accord Hybrid, Pilot, Acura NSX vehicles. The fuel pump inside the fuel tank may fail.

Consequence & remedy

Consequence: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.

Remedy: Dealers will replace the fuel pump module, free of charge. Owner letters were mailed September 6, 2024. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are KGC and KGD. This recall is an expansion of NHTSA recall numbers 21V-215 and 20V-314.

23V751000 · Engine And Engine Cooling:engine:hard Parts Internal/mechanical

Nov 13, 2023

Honda (American Honda Motor Co.) is recalling certain 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2016 and 2018-2019 Pilot, 2017 and 2019 Ridgeline, and 2018-2019 Odyssey vehicles. Due to a manufacturing error, the connecting rod bearing in the engine may wear and seize, damaging the engine.

Consequence & remedy

Consequence: A damaged engine may run improperly or stall while driving, increasing the risk of a fire, crash, or injury.

Remedy: Dealers will inspect and repair, or replace the engine as necessary, free of charge. Owner letters were mailed March 28, 2024. 2016-2017 Acura MDX owner letters were mailed November 1, 2024. 2016-2020 Acura MDX owner letters are expected to be mailed in mid-December 2024. Honda began mailing owner notification letters as of March 18, 2024. 2015-2016 Acura owner letters are expected to be mailed mid-December 2024, 2018 Acura TLX owner letters are expected to be mailed the end of March/early April 2024, 2019 Acura TLX owner letters are expected to be mailed mid-May 2024, 2020 Acura TLX owner letters are expected to be mailed mid-June 2024, and 2016-2020 Acura MDX owner letters are expected to be mailed January 27, 2025. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for these recalls are XG1 and GG0.

19V256000 · Exterior Lighting; Exterior Lighting:tail Lights

Mar 28, 2019

Honda (American Honda Motor Co.) is recalling certain 2014-2019 Acura MDX and 2017-2019 Acura MDX Sport Hybrid vehicles. Moisture may enter the tailgate lid lights, possibly causing a loss of the tailgate lid lights and the taillights.

Consequence & remedy

Consequence: Loss of the taillights reduces the vehicle's visibility, increasing the risk of crash.

Remedy: Acura will notify owners, and dealers will modify the tailgate lid lights and install updated gaskets and a wiring sub-harness or will replace both tailgate lid lights. The repairs will be performed free of charge. The recall began May 7, 2019. Owners may contact Acura customer service at 1-888-234-2138. Acura's number for this recall is M49.

Additional source detail variants (2)

Exterior Lighting

Honda (American Honda Motor Co.) is recalling certain 2014-2019 Acura MDX and 2017-2019 Acura MDX Sport Hybrid vehicles. Moisture may enter the tailgate lid lights, possibly causing a loss of the tailgate lid lights and the taillights.

Consequence: Loss of the taillights reduces the vehicle's visibility, increasing the risk of crash.

Remedy: Acura will notify owners, and dealers will modify the tailgate lid lights and install updated gaskets and a wiring sub-harness or will replace both tailgate lid lights. The repairs will be performed free of charge. The recall began May 7, 2019. Owners may contact Acura customer service at 1-888-234-2138. Acura's number for this recall is M49.

Exterior Lighting:tail Lights

Honda (American Honda Motor Co.) is recalling certain 2014-2019 Acura MDX and 2017-2019 Acura MDX Sport Hybrid vehicles. Moisture may enter the tailgate lid lights, possibly causing a loss of the tailgate lid lights and the taillights.

Consequence: Loss of the taillights reduces the vehicle's visibility, increasing the risk of crash.

Remedy: Acura will notify owners, and dealers will modify the tailgate lid lights and install updated gaskets and a wiring sub-harness or will replace both tailgate lid lights. The repairs will be performed free of charge. The recall began May 7, 2019. Owners may contact Acura customer service at 1-888-234-2138. Acura's number for this recall is M49.

19V060000 · Fuel System, Other:delivery:fuel Pump

Jan 29, 2019

Honda (American Honda Motor Co.) is recalling certain 2016-2018 Acura MDX, 2015-2019 Acura TLX and 2015-2017 Honda Accord vehicles, equipped with a 3.5L V6 engine. Particulates in fuel may adhere to the internal components of the fuel pump, reducing its performance.

Consequence & remedy

Consequence: Reduced fuel pump performance can result in an engine stall, increasing the risk of crash.

Remedy: Honda will notify owners, and dealers will update the fuel injection engine control unit (FI-ECU) software and, if necessary, replace the fuel pump, free of charge. The recall began March 25, 2019. Owners may contact customer service at 1-888-234-2138. Acura's recall number for this recall is P3W. Honda's recall number for this recall is N3X.

16V417000 · Fuel System, Gasoline:storage:tank Assembly

Jun 9, 2016

Honda (American Honda Motor Co.) is recalling certain model year 2015 Acura MDX 2WD and MDX 4WD vehicles, 2016 Acura MDX 4WD vehicles, 2015-2016 Honda Odyssey vehicles, and 2016 Honda Pilot 2WD and 4WD vehicles. The affected vehicles have fuel tanks that were manufactured with insufficient welds which may separate and allow fuel to leak out.

Consequence & remedy

Consequence: A fuel leak in the presence of an ignition source may result in a fire.

Remedy: Honda will notify owners, and dealers will replace the fuel tanks, free of charge. Owners may contact Honda/Acura customer service at 1-888-234-2138. The recall began on July 29, 2016. Honda's numbers for this recall are KA9 (Honda vehicles) and KB0 (Acura vehicles).

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

3

PE25008 · Engine Failure

Opened Aug 20, 2025 · No close date supplied

Status: open (inferred from source dates) · Engine

The Office of Defects Investigation (ODI) has received 414 reports of connecting rod bearing failures in the 3.5L V6 engine used in the following vehicles: Model Years (MY) 2018-2020 Acura TLX, MY2016-2020 Acura MDX, MY2016-2020 Honda Pilot, MY2018-2020 Honda Odyssey, and MY2017-2019 Honda Ridgeline.  The subject engine failures were analyzed as part of a Recall Query (RQ24013).  It was determined that these engine failures are outside the scope of Honda Recall 23V-751. Further, evidence gathered in conjunction with RQ24013 does not suggest this failure is caused by the same crankshaft manufacturing defect that is addressed by Honda in Recall 23V-751.  Based on analysis of data from RQ24013, NHTSA has closed that investigation. The significant number of reports of engine failure in vehicles outside the scope of RQ24013 presents a potential safety risk that warrants further investigation.  ODI is opening this Preliminary Evaluation (PE) to further evaluate the scope and severity of the potential problem and to fully assess the potential safety-related issues.  To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

EA25004 · No Restart After Auto Start/stop Engages

Opened Mar 26, 2025 · No close date supplied

Status: open (inferred from source dates) · Engine And Engine Cooling:engine; Engine And Engine Cooling:engine:crank/camshaft Position Sensor; Engine And Engine Cooling:engine:engine Control Module (ecu/ecm):software; Engine And Engine Cooling:engine:hard Parts Internal/mechanical

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

Additional source detail variants (4)

Engine And Engine Cooling:engine:crank/camshaft Position Sensor

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

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

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

Engine And Engine Cooling:engine:hard Parts Internal/mechanical

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

Engine And Engine Cooling:engine

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

RQ24013 · Engine Failure

Opened Nov 8, 2024 · Closed Aug 20, 2025

Status: closed (inferred from source dates) · Engine

On November 8, 2024, the Office of Defects Investigation (ODI) opened Recall Query RQ24013 to assess the scope of Honda recall 23V-751 after receiving complaints that alleged connecting rod bearing failures in vehicles that were not within the scope of recall 23V-751. In November 2023, Honda recalled 248,999 various Model Year (MY)2016–2020 Honda and Acura vehicles equipped with the 3.5L V6 engine. Honda recalled these vehicles due to a crankshaft manufacturing defect that caused premature connecting rod bearing wear and engine seizure. While the out-of-scope failures involved in these complaints appear to have a very similar failure mechanism as the recalled engines, a thorough analysis of all available data from Honda has not indicated that the same manufacturing defect exists in the out-of-scope engines as the engines recalled by 23V-751. Based on this analysis ODI has determined that Honda has properly defined the scope of recall 23V-751. Consequently, ODI will close this RQ investigation.  NHTSA will continue to investigate these complaints of engine failure as part of a new Preliminary Evaluation Investigation (PE25008). The Agency reserves the right to take additional action if warranted by new circumstances.