Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
1330–25K
3025–50K
4050–75K
1975–100K
6100–150K
3150K+
231 reports with mileage · 110 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.
Power Train. Review the 160 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Engine. Review the 82 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Electrical System. Review the 64 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
12 crash reports0 fire reports5 injury reports
What owners actually said
341 reports
23,131 miles · Jan 21, 2021
Forward Collision AvoidanceLane Departure
THE FOLLOWING WARNING MESSAGES ALL POPED-UP AT THE SAME TIME WHILE DRIVING THE VEHICLE ON A CITY STREET: BRAKE SYSTEM PROBLEM; BRAKE HOLD SYSTEM PROBLEM; ANTI-LOCK BRAKE SYSTEM PROBLEM; VIHICLE STABILITY ASSIST PROBLEM; HILL START ASSIST PROBLEM; LANE KEEPING ASSIST PROBLEM; POWER STEERING SYSTEM PROBLEM; HILL START ASSIST PROBL…
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THE FOLLOWING WARNING MESSAGES ALL POPED-UP AT THE SAME TIME WHILE DRIVING THE VEHICLE ON A CITY STREET: BRAKE SYSTEM PROBLEM; BRAKE HOLD SYSTEM PROBLEM; ANTI-LOCK BRAKE SYSTEM PROBLEM; VIHICLE STABILITY ASSIST PROBLEM; HILL START ASSIST PROBLEM; LANE KEEPING ASSIST PROBLEM; POWER STEERING SYSTEM PROBLEM; HILL START ASSIST PROBLEM; FORWARD COLLISSION WARNING PROBLEM; LANE DEPARTURE ASSIST PROBLEM; THE MESSAGE KEEP ROTATING WHILE DRIVING THE VEHICLE AND THE ASSOCIATED DASHBOARD LIGHT REMAINS ON. I SUSPECT THIS MIGHT BE RELATED TO ACURA SERVICE BULLETIN 15-050, BUT I HAVE NOT CONFIRMED THIS YET.
NHTSA ODI #11389275
123,000 miles · Jan 21, 2021
Electrical System
TL* THE CONTACT OWNS A 2015 ACURA TLX. THE CONTACT STATED WHILE DRIVING AT 35 MPH, THE VEHICLE SAFETY WARNING BRAKE LIGHT, LANE DEPARTURE AND STEERING LIGHT ILLUMINATED ON THE VEHICLE AND WOULD NOT TURN OFF. THE CONTACT WAS ABLE TO PULL OVER THE VEHICLE INTO A PARKING LOT WHERE THEY HAD THE VEHICLE TOWED TO LOCAL DEALER PROCTOR…
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TL* THE CONTACT OWNS A 2015 ACURA TLX. THE CONTACT STATED WHILE DRIVING AT 35 MPH, THE VEHICLE SAFETY WARNING BRAKE LIGHT, LANE DEPARTURE AND STEERING LIGHT ILLUMINATED ON THE VEHICLE AND WOULD NOT TURN OFF. THE CONTACT WAS ABLE TO PULL OVER THE VEHICLE INTO A PARKING LOT WHERE THEY HAD THE VEHICLE TOWED TO LOCAL DEALER PROCTOR ACURA (3523 W TENNESSEE ST, TALLAHASSEE, FL 32304) WHO DIAGNOSED THE FAILURE AS THE REAR ACTUATORS. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 123,000. *LN*JB VEHICLE WAS TAKEN TO THE DEALER. CONSUMER STATED DEALER PULLED THE CODES OFF THE VEHICLE SHOWING ONLY WHAT PARTS NEEDED TO BE REPLACED.*JB
NHTSA ODI #11389242
95,000 miles · Jan 19, 2021
Power Train
TL* THE CONTACT OWNS A 2015 ACURA TLX. THE CONTACT STATED WHILE THE VEHICLE WAS PARKED ON A SLIGHT INCLINE, THE VEHICLE STARTED ROLLING BACKWARDS. THE CONTACT JUMPED BACK IN THE VEHICLE AND ENGAGED THE PARKING BRAKES. AFTERWARDS, THE CONTACT ATTEMPTED TO SHIFT THE VEHICLE INTO DRIVE HOWEVER, THE TRANSMISSION FAILED TO RESPOND. T…
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TL* THE CONTACT OWNS A 2015 ACURA TLX. THE CONTACT STATED WHILE THE VEHICLE WAS PARKED ON A SLIGHT INCLINE, THE VEHICLE STARTED ROLLING BACKWARDS. THE CONTACT JUMPED BACK IN THE VEHICLE AND ENGAGED THE PARKING BRAKES. AFTERWARDS, THE CONTACT ATTEMPTED TO SHIFT THE VEHICLE INTO DRIVE HOWEVER, THE TRANSMISSION FAILED TO RESPOND. THE CONTACT WAS UNABLE TO SHIFT THE VEHICLE INTO DRIVE OR PARK. AN INDEPENDENT MECHANIC WAS CALLED OUT TO THE RESIDENCE TO DIAGNOSE THE VEHICLE. THE MECHANIC RETRIEVED A TEMPORARY FAULT CODE OF THE TRANSMISSION. THE CONTACT WAS INFORMED THAT THE TRANSMISSION WIRING HARNESS NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. AN UNKNOWN DEALER AND THE MANUFACTURER WERE NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 95,000.
NHTSA ODI #11388837
94,000 miles · Jan 15, 2021
Power Train
WHEN ACCELERATING THE CAR TRIPS INTO NEUTRAL AND WILL NOT LET ME CONTINUE ACCELERATING. I CAN PUSH THE PEDAL ALL THE WAY TO THE FLOOR AND NOTHING WILL HAPPEN. THE ONLY WAY IT TRIPS OUT OF NEUTRAL IS TO RELEASE THE PEDAL AND THEN PUSH IT AGAIN. THIS HAPPENS WHEN ALREADY DRIVING AROUND 10-30MPH NOT FROM A STOPPED POSITION AND WA…
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WHEN ACCELERATING THE CAR TRIPS INTO NEUTRAL AND WILL NOT LET ME CONTINUE ACCELERATING. I CAN PUSH THE PEDAL ALL THE WAY TO THE FLOOR AND NOTHING WILL HAPPEN. THE ONLY WAY IT TRIPS OUT OF NEUTRAL IS TO RELEASE THE PEDAL AND THEN PUSH IT AGAIN. THIS HAPPENS WHEN ALREADY DRIVING AROUND 10-30MPH NOT FROM A STOPPED POSITION AND WAS ON CITY STREETS. IT DOES ALSO HAPPEN WHEN TURNING.
NHTSA ODI #11388342
Mileage unknown · Jan 5, 2021
Structure
THE PAINT IS STARTING TO PEEL ABOVE THE REAR WINDSHIELD IN BETWEEN THE GAP.
NHTSA ODI #11386589
Mileage unknown · Jan 4, 2021
Electrical System
THE CAR WILL CLICK WHEN I'M TRYING TO START IT WONT START CHANGED THE BATTER, STARTER. BUT BEFORE THIS THE TAIL LIGHTS WENT OUT THE ALARM BEEPS WHEN I LOCK THE DOORS WONT BEEP AND NOW IT WONT START.
NHTSA ODI #11386487
10,000 miles · Jan 2, 2021
Structure
THE PAINT ON THE ACURA TLX IS DEFECTIVE. ACURA HAS RECALLED THE PHANTOM BLUE PEARL PAINT FOR PEELING AROUND THE REAR WINDOW BUT WON'T RECALL THE BELLANOVA WHITE PEARL FOR THE EXACT SAME ISSUE. I'VE SPOKEN WITH DEALER AND THEY AGREE IT'S A DEFECT IN THE PAINT. ACURA CLIENT RELATIONS WERE ABSOLUTELY NO HELP. I PERSONALLY KNOW …
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THE PAINT ON THE ACURA TLX IS DEFECTIVE. ACURA HAS RECALLED THE PHANTOM BLUE PEARL PAINT FOR PEELING AROUND THE REAR WINDOW BUT WON'T RECALL THE BELLANOVA WHITE PEARL FOR THE EXACT SAME ISSUE. I'VE SPOKEN WITH DEALER AND THEY AGREE IT'S A DEFECT IN THE PAINT. ACURA CLIENT RELATIONS WERE ABSOLUTELY NO HELP. I PERSONALLY KNOW OF 40/50 OTHER OWNERS WITH THE EXACT ISSUE. I ALSO KNOW OF HONDA OWNERS HAVING SIMILAR PROBLEMS.
NHTSA ODI #11386167
80,000 miles · Dec 13, 2020
Unknown Or Other
2015 ACURA TLX FREQUENTLY STALLS, DOES NOT RESTART WHEN IDLE STOP FEATURE IS USED. THIS IS A SAFETY ISSUE WHEN AT AN INTERSECTION AND I AM STALLED, HAVING TO PUT THE CAR IN PARK AND THEN RESTART THE CAR. BROUGHT THE CAR IN TWICE TO ACURA IN 2016 WHEN I INITIALLY PURCHASED THE VEHICLE, BROUGHT IT IN AGAIN TO ACURA THIS WEEK AND…
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2015 ACURA TLX FREQUENTLY STALLS, DOES NOT RESTART WHEN IDLE STOP FEATURE IS USED. THIS IS A SAFETY ISSUE WHEN AT AN INTERSECTION AND I AM STALLED, HAVING TO PUT THE CAR IN PARK AND THEN RESTART THE CAR. BROUGHT THE CAR IN TWICE TO ACURA IN 2016 WHEN I INITIALLY PURCHASED THE VEHICLE, BROUGHT IT IN AGAIN TO ACURA THIS WEEK AND THEY ARE UNABLE TO FIX IT, INDICATING THIS HAS BEEN AN ISSUE WITH TLX'S AND MLX'S. SAID REPLACING THE STARTER HELPED ONE CUSTOMER BUT SINCE NOT UNDER WARRANTY AND MY STARTER (AND BATTER AND ALTERNATOR) ALL CHECK OUT FINE, THEY DIDN'T RECOMMEND TRYING THAT. NORMALLY I TURN OFF THE FEATURE (WHICH THEY ARE UNABLE TO PERMANENTLY DISABLE) WHICH IS WHY I HAVEN'T BROUGHT IT BACK IN MORE FREQUENTLY BUT IT IS VERY CONCERNING IF I FORGET TO PRESS THE BUTTON TO TURN OFF THE FEATURE AND IT STALLS.
NHTSA ODI #11383216
78,000 miles · Dec 8, 2020
Electrical System
I WAS DRIVING HOME FROM WORK ON INTERSTATE I 84 IN MY CAR ENGINE STOPPED. I PULLED OVER ON THE SIDE OF THE ROAD SEE WHAT WAS GOING ON WITHOUT POWER STEERING WITHOUT POWER BREAKING AND WHEN I WAS ON THE SIDE OF THE ROAD AND I TRIED TO START MY CAR IN THE VEHICLE WAS JUST CLICKING. ONCE I GOT THE CAR HOME I TESTED THE BATTERY AND …
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I WAS DRIVING HOME FROM WORK ON INTERSTATE I 84 IN MY CAR ENGINE STOPPED. I PULLED OVER ON THE SIDE OF THE ROAD SEE WHAT WAS GOING ON WITHOUT POWER STEERING WITHOUT POWER BREAKING AND WHEN I WAS ON THE SIDE OF THE ROAD AND I TRIED TO START MY CAR IN THE VEHICLE WAS JUST CLICKING. ONCE I GOT THE CAR HOME I TESTED THE BATTERY AND I TESTED THE ALTERNATOR BOTH OF WHICH ARE WORKING FINE THE STARTER SOMEHOW SHUT MY CAR OFF. THIS ISSUE ALSO OCCURS EVERY TIME I USE THE AUTOMATIC ENGINE STOP START AT RED LIGHTS KEEPING ME FROM USING THAT FEATURE OF MY VEHICLE COMPLETELY
NHTSA ODI #11378581
134,400 miles · Dec 2, 2020
Electrical SystemPower TrainVehicle Speed Control
WHILE DRIVING I NOTICED THAT MY CAR DIDN'T SEEM TO SHIFT CORRECTLY. I PULLED OVER AND ACCELERATED AGAIN. GOT TO MY DESTINATION AND NOTICED THE CAR WASN'T MOVING HARLDY AS I PULLED UP TO PARK. ONCE I PARKED, I PUT IT IN REVERSE TO PULL UP AGAIN AND IT WAS MAKING A LOUD NOISE AND JERKING WHEN I PUT IT IN REVERSE. I DID THIS LIKE…
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WHILE DRIVING I NOTICED THAT MY CAR DIDN'T SEEM TO SHIFT CORRECTLY. I PULLED OVER AND ACCELERATED AGAIN. GOT TO MY DESTINATION AND NOTICED THE CAR WASN'T MOVING HARLDY AS I PULLED UP TO PARK. ONCE I PARKED, I PUT IT IN REVERSE TO PULL UP AGAIN AND IT WAS MAKING A LOUD NOISE AND JERKING WHEN I PUT IT IN REVERSE. I DID THIS LIKE 3 TIMES TO TRY AND FIGURE OUT WHAT WAS GOING ON. AFTER ABOUT 4 HOURS I WENT TO LEAVE MY DESTINATION AND IT SHIFTED INTO REVERSE JUST FINE. I WAS RELIEVED UNTIL AFTER ABOUT 5 MINUTES OF DRIVING AND THEN EVERY LIGHT ILLUMINATED ON THE DASH AND THE CAR WASN'T ACCELERATING AS IT SHOULD HAVE BEEN. THE RPM'S WERE GOING UP BUT CAR WAS BARELY MOVING. I MADE IT HOME BUT NOW SICK TO MY STOMACH BECAUSE I HAVE NO IDEA WHAT THIS COULD BE. NOT SURE IF IT NEEDS TO BE TOWED TO A SHOP OR IF I CAN OR SHOULD DRIVE IT IF POSSIBLE.
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.
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.
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.
Honda (American Honda Motor Co.) is recalling certain model year 2015 Acura TLX 2WD and 4WD vehicles. In the affected vehicles, the transmission wire harness connections may have insufficient crimps, and, as a result, the transmission may unexpectedly shift to neutral.
Consequence & remedy
Consequence: If the vehicle unexpectedly shifts to neutral, there is an increased risk of a crash.
Remedy: Acura has notified owners, and dealers will, based on the automatic transmission serial number, update the transmission software to prevent the transmission from shifting into neutral due to a faulty crimp, free of charge. The recall began January 13, 2017. Owners may contact Acura Client Relations at 1-888-234-2138. Honda's number for this recall is KC2.
American Honda Motor Co. (Honda) is recalling certain model year 2015 Acura TLX V6 2WD vehicles manufactured July 14, 2014, to November 12, 2014, and certain 2015 TLX V6 SH-AWD vehicles manufactured August 26, 2014, to November 10, 2014. The automatic transmission parking pawl may become contaminated or the park rod may become dislodged or broken. This may prevent the transmission from shifting into the Park position.
Consequence & remedy
Consequence: If the shift indicator displays "Park" but the park lock does not engage, the vehicle may roll away increasing the risk of a crash.
Remedy: Honda will notify owners, and dealers will inspect and replace the transmission if necessary, free of charge. The recall began January 30, 2015. Owners may contact Honda customer service at 1-310-783-2000. Honda's number for this recall is JM8.
American Honda Motor Co. (Honda) is recalling certain model year 2015 Acura TLX AWD vehicles manufactured August 26, 2014, to September 20, 2014. The affected vehicles may have incorrect values for the Gross Vehicle Weight Rating (GVWR) and Gross Axle Weight Rating (GAWR) front and rear printed on the safety certification label. As such, the vehicles do not conform to Part 567, "Certification."
Consequence & remedy
Consequence: If the vehicle is loaded to the specifications listed on the label, tire failure may result, increasing the risk of a crash.
Remedy: Honda will notify owners, and dealers will install a corrected certification label, free of charge. The recall is expected to begin on October 21, 2014. Owners may contact Honda customer service at 1-800-382-2238. Honda's number for this recall is JK6.
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
2
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.
EA19001 · Electrical Overstress
Opened Apr 19, 2019 · Closed Sep 19, 2024
Status: closed (inferred from source dates) · Air Bags: Air Bag/restraint Control Module
The Office of Defects Investigation (ODI) opened this investigation to determine if the failure of airbags to deploy during severe crashes, in certain vehicles, was the result of a safety related defect. During the investigation a complex failure was studied that can result in non-deployment of subject vehicle air bags and other restraint system devices in severe crash events. The subject vehicles may be equipped with an airbag control unit (ACU) for the supplemental restraint system (SRS) Electronic Control Unit (ECU) manufactured by ZF-TRW. The ECU receives signals from crash sensors mounted in the vehicle and deploys the vehicle air bags and seat belt pretensioners in accordance with manufacturer design specifications. The ECU in the subject vehicles contains a model DS84 application-specific integrated circuit (ASIC) which controls the communication of the crash sensor signal, firing commands (i.e., when to deploy the airbag(s) and/or pretensioners), and fault information (e.g., diagnostic trouble codes). In September 2016, FCA announced recall 16V-668 for certain model year (MY) 2010 to 2014 Chrysler, Dodge and Jeep products manufactured with the subject ZF-TRW ACU. In this recall, FCA discussed an EOS condition that resulted in a failure of the subject DS84 ASIC, which caused air bag non-deployment. FCA noted that the defect condition had only been observed in vehicles equipped with sensor harnessing routed across the front of the vehicle. Other FCA vehicles that also used the subject ACU, but were not equipped with cross-car harnessing, had not experienced EOS failures, despite similar time in service. During the course of this investigation, ODI sent two separate Information Request (IR) letters to six vehicle manufactures (including FCA, Hyundai, Honda, Kia, Mitsubishi, and Toyota) and one IR letter to ZF-TRW. These IR letters resulted in ODI receiving comprehensive data from these manufacturers and suppliers. Studies of this data found that the DS84 ASIC does not have sufficient protection against negative electrical transients or electrical overstress (“EOS”) that can be generated in certain severe crashes. An electrical transient occurs when the electrical power supplied to a circuit changes momentarily over a short duration of time. In these severe crash cases, the crash sensors and other powered wiring can be damaged and short circuited so as to create a negative electrical transient of sufficient intensity and duration (that are outside the vehicle manufacturer's specification) to damage the ASIC before the restraint device deployment signal is received by the SRS ECU. This damaged signal can lead to incomplete or nondeployment of the air bags and/or pretensioners. Airbag non-deployment and/or lack of pretensioner operation can increase the risk or severity of injury in a crash.A total of 8 fatalities and 14 injuries were associated with known EOS events. The common element in all investigated manufacturers vehicles is the SRS ECU containing a DS84 ASIC manufactured by ZF-TRW. The risk associated with the ASIC is equally shared among all OEMS involved in the investigation. The actual real-world risk can be mitigated by other factors which were assessed by ODI during this investigation. The first mitigating factor involves protections built into the ACU design which protect the DS84 ASIC from damage. There are multiple strategies and levels of protection employed by different OEMs that provide effective EOS mitigation. The two most common strategies at the ACU level are circuit protection diodes on the remote senor signal lines, and current limiting resistors that protect critical components. The second mitigating factor is found at the vehicle level and involves the location and routing of the wires leading from the crash sensors to the SRS ECU. If the wires are well protected in a crash and are not routed with other power wires carrying large currents, the risk for an EOS event is significantly reduced or eliminated. These design specific factors combine to produce a spectrum of risk for the vehicles equipped with ACUs using the DS84 ASIC. Given the many of years of field exposure, it is possible to divide the subject population into two groups; vehicles which have experienced EOS events, and vehicles which have not experienced EOS field events. Four of the six OEMs involved in this investigation have experienced EOS field events on at least one of their models equipped with a DS84 ASIC. All vehicle models (including the Toyota models identified in the Failure Report Summary of the opening resume for this investigation) with field events have been recalled. In an abundance of caution, ODI kept this investigation open five years to monitor field performance and did not identify any field events on vehicles not included in existing safety recalls. Given the spectrum of risk identified in this investigation and that all vehicles with a demonstrated unreasonable risk have been recalled, ODI is closing this investigation. ODI is closing this investigation with the following manufacturer safety recalls: 16V-668, 18E-043, 18V-137, 18V-363, and 20V-024. With the recall actions taken by the subject vehicle and equipment manufacturers, this investigation is closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exists on other model or model year vehicles outside of the recall scopes. The agency reserves the right to take further action if warranted by the circumstances.
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