NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
373 reports80,000 miles · Nov 4, 2025
Engine And Engine Cooling
The contact owns a 2016 Acura MDX. The contact stated that while driving at various speeds, the vehicle stalled. The contact was unable to veer to the side of the road. The contact was able to push the vehicle to the side of the road with assistance on each occasion. The vehicle was able to restart, and the check engine warning …
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The contact owns a 2016 Acura MDX. The contact stated that while driving at various speeds, the vehicle stalled. The contact was unable to veer to the side of the road. The contact was able to push the vehicle to the side of the road with assistance on each occasion. The vehicle was able to restart, and the check engine warning light was illuminated. The contact was able to resume driving. The vehicle was taken to an independent mechanic several times, and the vehicle was diagnosed with emissions failure. The mechanic reset the computer and the check engine warning light; however, the failure persisted. The dealer was notified of the failure and informed the contact that the VIN was not included in a related recall. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 80,000.
NHTSA ODI #11697358
Mileage unknown · Oct 28, 2025
Engine
Car broke down driving from Dallas to Oklahoma on the highway while at cruising speed. We were able to pull over safely and after towing the car home, the engine produced a knocking sound. Upon further investigation, there is a recall for rod/bearing issues with 2016-2020 Acura MDX's and other various models like the Acura TLX, …
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Car broke down driving from Dallas to Oklahoma on the highway while at cruising speed. We were able to pull over safely and after towing the car home, the engine produced a knocking sound. Upon further investigation, there is a recall for rod/bearing issues with 2016-2020 Acura MDX's and other various models like the Acura TLX, Honda Pilot, etc. This only extended to certain models and there has been more affected by it than what the recall covers. Maintenance such as regular oil changes to big services like timing belt and water pump was done according to the service manual interval. Investigation RQ24013 was open on 11/08/2024 by Investigator Richard Lawrence, Reviewer Sharon Yukevich, and Approver Tanya Topka. There have been about 173 incidents and pose a great safety hazard. Once the car is stopped, the car is not able to go into neutral without the engine on. The only way to override this is through the engine bay with a tool of some sort to manually engage the neutral switch. If the car stops in the middle of the road with this engine failed, this could lead to a more severe casualty
NHTSA ODI #11696009
Mileage unknown · Oct 28, 2025
EngineSteeringVehicle Speed Control
The vehicle frequently experiences problems while idling at red lights or stop signs. Specifically, the engine suddenly shuts off after displaying a message that "Idle Mode is unavailable." This has occurred multiple times, and on five separate occasions, the vehicle became completely immobile, requiring towing to the nearest me…
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The vehicle frequently experiences problems while idling at red lights or stop signs. Specifically, the engine suddenly shuts off after displaying a message that "Idle Mode is unavailable." This has occurred multiple times, and on five separate occasions, the vehicle became completely immobile, requiring towing to the nearest mechanic. Initially, I had the flywheel and starter motor replaced, which cost me approximately $5,000. However, just three months later, the same issue reappeared. Most recently, while driving home from work, the idle mode failed again at a stop sign, and the engine stopped running. I contacted Acura/Honda regarding this issue, but they informed me that it is not their responsibility. At this point, I am unsure how to proceed or where to seek a reliable fix, and I am concerned about the safety implications of this recurring failure.
NHTSA ODI #11695976
11,624 miles · Oct 21, 2025
Engine And Engine Cooling
The contact owns a 2016 Acura MDX. The contact stated that while driving at 40 MPH, there was an abnormal ticking sound coming from the engine. Several unknown warning lights were illuminated. A dealer was contacted. The vehicle was taken to a dealer, where it was diagnosed, and determined that the short block needed to be repla…
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The contact owns a 2016 Acura MDX. The contact stated that while driving at 40 MPH, there was an abnormal ticking sound coming from the engine. Several unknown warning lights were illuminated. A dealer was contacted. The vehicle was taken to a dealer, where it was diagnosed, and determined that the short block needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the issue but offered no assistance. The contact related the failure to NHTSA Campaign Number: 23V751000 (ENGINE AND ENGINE COOLING); however, the VIN was not included in the recall. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was 11,624.
NHTSA ODI #11694732
Mileage unknown · Oct 18, 2025
Power Train
The transmission and motor has failed. Car has 133000 miles. Transmission recently rebuilt. Car continues to malfunction according to the recall but is not listed.
NHTSA ODI #11694321
Mileage unknown · Oct 18, 2025
Power Train
The Acura MDX, which had always been serviced at an Acura dealership, had 121,007 miles on it when the transmission completely failed without prior warning. I was driving with the d cruise control on at around 70 mph when I took the car off cruise by touching the brake to take the exit ramp onto I-10. I suddenly lost power, the …
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The Acura MDX, which had always been serviced at an Acura dealership, had 121,007 miles on it when the transmission completely failed without prior warning. I was driving with the d cruise control on at around 70 mph when I took the car off cruise by touching the brake to take the exit ramp onto I-10. I suddenly lost power, the engine still runnning, the car was on the exit ramp, which was uphill and exiting from I75 South. I had to coast to a stop and stopped between in a trouble area between the exit ramp and the fast lane on I10 east, which the wrecker driver said left the car exposed in a “kill zone.” After stopping, the car would start but all four wheels were locked and the wrecker drivers could not roll the car into a safer location to retrieve the car. They nevertheless pulled the car onto the wrecker while in what they described as a “kill zone,” and I also thought the spot I had to stop was extremely dangerous. The dealership, Key Acura in Gainesville, Florida, advised the transmission needed to be replaced at a cost of $7,200. After that I sold the car to an online site at a price that was basically for junk.
NHTSA ODI #11694273
Mileage unknown · Oct 15, 2025
Engine
Engine cut out on the middle of a pitch black highway in Virginia. Few seconds lights flashing on dashboard check engine light started flashing then low engine oil and then the rest of the standard "CHRISTMAS TREE LIGHTS" experience as I was finally able to pull the vehicle over. Vehicle seemed as if it was dead. When got vehicl…
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Engine cut out on the middle of a pitch black highway in Virginia. Few seconds lights flashing on dashboard check engine light started flashing then low engine oil and then the rest of the standard "CHRISTMAS TREE LIGHTS" experience as I was finally able to pull the vehicle over. Vehicle seemed as if it was dead. When got vehicle JUMPED 2 hours later I started engine because it wouldn't start. It was making all the noises consistent with ENGINE recall that MY ENGINE was so conveniently not included in the recall. ACURA WON'T DO ANYTHING for me. I was stuck on the side of the highway in the pitch black with cars and trucks flying by at 70+MPH with my 3 kids and spouse. ENGINE is chattering and has no power. ALMOST ABOUT TO SEIZE. I was stranded in a small town for 2 days with no way to get home no rental companies with cars available. ALL VIDEOS online consistentfor engine recall consistent with my experience. NO lights no hestitation perfect engine oil level filled tank of gas minutes with 93 as always not even 2 minutes before this situation. ENGINE WAS PERFECT. Was glad I wasn't apart of recall initially. I thought I had a "GOOD ONE" then boom complete catastrophe. NHTSA NEEDS to expedite this. THIS IS NOT ROCKET SCIENCE! Acura knows the issue they are running form it. I spent over $1,100 to tow my vehicle home and get my family home safely.
NHTSA ODI #11693651
Mileage unknown · Oct 7, 2025
Engine
Hello. I went to the Acura dealership because I got a recall letter. I lost the letter itself a few days ago. I also had the check engine light come on once while driving. But then it went out on its own during the same trip. At the moment of checking my car by my foreman, he heard a knocking noise in the engine. He said that t…
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Hello. I went to the Acura dealership because I got a recall letter. I lost the letter itself a few days ago. I also had the check engine light come on once while driving. But then it went out on its own during the same trip. At the moment of checking my car by my foreman, he heard a knocking noise in the engine. He said that they will check my car on the recall and see what's wrong with the engine. After some time, he called me and said: I am very sorry, but you need to replace the complete motor as this knock is caused by a problem in the bearing. And alas your car does not fall under the recall to replace this bearing. I asked him which bearing he was talking about. And they answered that it was the one that goes into the recall under which my car did not fall. I clarified that its name sounds like: connecting rod bearing? He said: Yes. I've had all my maintenance done on time. Engine oil changes every 5,000 miles. Even before the 8,000 to 10,000 miles. I have all the paperwork with receipts and dates in my car paperwork bag. At every oil change no one has ever told me there was an engine problem. The car was purchased from a dealership in Libertyville, Illinois. The car is currently at a dealership in Naperville, Illinois. I wrote a complaint to Acura of California on 9/26/2025. To date, all I have gotten is a response: we have a lot of work to do, we will respond when we can. Very rude and disrespectful. Considering I could have been in an accident if the engine had seized up. That's what my foreman at the dealership said. Or even worse, my daughter could have had an accident. I was planning to give this car to my daughter since she got her driver's license. She really liked this car. Now I don't know what to tell her. I am asking for your help to resolve this problem. They still haven't contacted me or told me what to do. Appreciate it.
NHTSA ODI #11691940
Mileage unknown · Sep 30, 2025
Engine
No prior issues with vehicle when all of a sudden/out of the blue the check engine light started flashing and felt decreased power. Pulled over, had it towed to dealership. After it was diagnosed they advised of a rod bearing failure, crankshaft failure and metal shavings in the oil which went through the engine. There is a reca…
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No prior issues with vehicle when all of a sudden/out of the blue the check engine light started flashing and felt decreased power. Pulled over, had it towed to dealership. After it was diagnosed they advised of a rod bearing failure, crankshaft failure and metal shavings in the oil which went through the engine. There is a recall for 2016 Acura MDX for this EXACT issue, however for some reason my VIN is not included?? The recall was effective Nov of 2023. I purchased vehicle Feb of 2023. Vehicle is still at shop as a complaint has been filed with Acura.
NHTSA ODI #11690522
Mileage unknown · Sep 24, 2025
StructureUnknown Or Other
White Diamond Pearl Paint started peeling prematurely approx 130,000 miles in 2023 in large sections causing unsightly paint. This is a very well known problem for this car in both Acuras and Hondas and a recall was done but with very very limited vehicles. Dealer refused to help us
NHTSA ODI #11689519
Official recalls
7Jun 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.
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.
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.
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.
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.
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.
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
3PE25008 · 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.
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