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2018 Acura Tlx

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2018 Acura Tlx do not stand out strongly from the model-year median of 65.

About this comparison →

When problems were reported

Mileage at the reported incident

27 reports with mileage · 67 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 31 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 19 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel/propulsion System. Review the 14 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

3 crash reports1 fire reports2 injury reports

What owners actually said

94 reports
Mileage unknown · Jun 21, 2022
Power Train

When I bought the 2018 Acura TLX I asked about the buttons on the shifter being warn out. And they said they were fine and did not need to be replaced. I also brought this to Acura's attention that the fact that they wear out enough other drivers will not know which buttons is which and it can become a safety issue. Again, they …

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When I bought the 2018 Acura TLX I asked about the buttons on the shifter being warn out. And they said they were fine and did not need to be replaced. I also brought this to Acura's attention that the fact that they wear out enough other drivers will not know which buttons is which and it can become a safety issue. Again, they brushed it off and said it wasn't in need of fixing. Well, my friend drove my car and even though I told her about the issue still had issues. She could not find the park button and pushed the wrong button. Causing the car to move when she thought it was in park.

NHTSA ODI #11470167

Mileage unknown · Apr 1, 2022
Electrical SystemEngine

Engine fails to start after idle stop, when the idle-stop off button is not engaged, and the battery doesn't have enough power to re-start the vehicle. Essentially, the engine tries to start up at a traffic light/intersection but fails, causing the car to turn off and shift to Neutral without warning. I then have to realize wh…

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Engine fails to start after idle stop, when the idle-stop off button is not engaged, and the battery doesn't have enough power to re-start the vehicle. Essentially, the engine tries to start up at a traffic light/intersection but fails, causing the car to turn off and shift to Neutral without warning. I then have to realize what is happening, shift the car from Neutral to Park, and hit the start button to be able to re-start the car. There is no warning from the car that the battery is going to be unable to keep the car running, so the stall is 100% unexpected. This is unsafe, as the re-start procedure is not intuitive, takes time, and causes cars behind you to start honking. It could very easily cause a crash. Either Acura needs to fix this issue with a battery warning, or provide the option of turning the auto-idle stop off button on permanently (which some members of our government wouldn't like, but would fix the problem and keep someone from being seriously injured). This is also a known issue by Honda/Acura, as many other owners are reporting it: https://www.tlxforums.com/threads/engine-failing-to-start-after-idle-stop.31809/

NHTSA ODI #11459222

47,700 miles · Mar 30, 2022
Engine

The contact owns a 2018 Acura TLX. The contact stated that while driving at an undisclosed speed, the vehicle stalled approximately ten times. The vehicle inadvertently shifted into neutral. The vehicle was restarted after five minutes. The local dealer was contacted. The vehicle was diagnosed and repaired. The manufacturer was …

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The contact owns a 2018 Acura TLX. The contact stated that while driving at an undisclosed speed, the vehicle stalled approximately ten times. The vehicle inadvertently shifted into neutral. The vehicle was restarted after five minutes. The local dealer was contacted. The vehicle was diagnosed and repaired. The manufacturer was not contacted. The failure mileage was approximately 47,700. Consumer stated there was a known software bug in the auto idle feature, that needed updating. Consumer took the car to the dealer and had the software updated.

NHTSA ODI #11458976

Mileage unknown · Mar 20, 2022
Electrical SystemService BrakesSteering

There are so many lights flashing, my vehicle will not go over 50MPH, My steering wheel is no longer straight its actually to the left. I brought it to Acura and they are stating its a REAR TOE ACTUATOR issue and refuse to cover the 5,100.00 fee to fix this issue that has had a SAFETY BULLETIN posted for a 2015 TLX. There has be…

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There are so many lights flashing, my vehicle will not go over 50MPH, My steering wheel is no longer straight its actually to the left. I brought it to Acura and they are stating its a REAR TOE ACTUATOR issue and refuse to cover the 5,100.00 fee to fix this issue that has had a SAFETY BULLETIN posted for a 2015 TLX. There has been a bulletin about this according to Carvana so ACURA is aware of this issue but refuse to recall this issue. Warning lights are as follow, BRAKE SYSTEM ISSUE, ROAD DEPARTURE MITIGATION SYSTEM PROBLEM, Adaptive Cruise Control problem, VEHICLE STABILITY ASSIST PROBLEM, PRECISION ALL WHEEL STEER PROBLEM, POWER STEERING FAILURE. This vehicle only has 46,987 miles.

NHTSA ODI #11457542

Mileage unknown · Mar 1, 2022
Air BagsCrashInjury

My car slid off of the road during a blizzard and hit a tree head on. My front end had smashed in and the car was totaled. The airbags did not deploy and the police who arrived on the scene believed that they should have. I brought my car to a body shop to assess the damages as well as look into the issue of the airbags. He told…

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My car slid off of the road during a blizzard and hit a tree head on. My front end had smashed in and the car was totaled. The airbags did not deploy and the police who arrived on the scene believed that they should have. I brought my car to a body shop to assess the damages as well as look into the issue of the airbags. He told me that all of the crash sensors had gone off and my seat belt had locked up which led him to believe that my airbags should have definitely deployed. The car had no warning lamps on prior to the accident. I often travel on the interstate and had this crash happened at greater speeds I most likely would have not survived. The vehicle is in transit to a salvage yard but is available for inspection.

NHTSA ODI #11454676

Mileage unknown · Dec 13, 2021
Electrical SystemForward Collision AvoidanceFuel/propulsion System

Vehicle is having problems w original recall issues. Car stopping on its own on the highway, car says it’s on E all the time but has gas, car hesitates continually and sometimes just stops, electrical system is having major glitches, transmission and engine having major issues with hesitation and delay. I’ve bright it back many …

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Vehicle is having problems w original recall issues. Car stopping on its own on the highway, car says it’s on E all the time but has gas, car hesitates continually and sometimes just stops, electrical system is having major glitches, transmission and engine having major issues with hesitation and delay. I’ve bright it back many times and I’m beyond frustrated with no resolution. It’s unsafe to drive. Problem since day 1 I got the car. I’m scared to drive it.

NHTSA ODI #11443568

Mileage unknown · Jul 27, 2021
Electrical System

When I press the start button with my key fob in range and with a new battery, the car won't start, but makes a rapid "ticking" noise while all of the dashboard lights flicker and other interior and exterior lights turn on. Despite repeated attempts over several hours, the car will not start.

NHTSA ODI #11426649

Mileage unknown · Jul 10, 2021
Unknown Or Other

I am concerned because the 2018 TLX Acura I purchased is having stalling and starting issues . When I first purchased the car and it had fewer than 17,000 miles problems appeared with the lights coming on, parking break and emission issues. It had to be repaired 3 times. The recalled Fuel system/fuel pump (recall # 19v060000) w…

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I am concerned because the 2018 TLX Acura I purchased is having stalling and starting issues . When I first purchased the car and it had fewer than 17,000 miles problems appeared with the lights coming on, parking break and emission issues. It had to be repaired 3 times. The recalled Fuel system/fuel pump (recall # 19v060000) was replaced in Feb. 2020, which I hoped fixed any mysterious stalling. The first time it stalled I was in a COVID parade at work to support the community. It started up and I did not think about it again. That was in the spring of 2020. Again on Thurs., July 8,2021 the battery light came on and the car stalled while I went to push the gas peddle to go at a light that turned green (It occurred twice in one day). Instead the car stalled. I went to restart, first it said stuck in gear, then it was fine. The dealer claims it is because the gear selector switch had crumbs and too much dirt in it. I find it strange that Acura left such a vulnerable part exposed to elements with cup holders next to it and in a society that has a drive-thru for almost any food. Approximately one week before I got the same messages when pulling into a parking spot just before stopping. I restarted the car and it was fine. Also on May 24, 2021 my car, which had 71,657 miles had another issue with the Green key light flashing and the car did not start. The dealer replaced the control unit for keyless entry. It first appeared when my brother couldn't start my car. He told me and I went to start the car and it was fine. He was not familiar with my car and I thought maybe he didn't hold the brake to start it. Not long after I went to leave for work in the morning and the car did not start at all. I saw the blinking key. my car was towed to the dealer and repaired it. I have never had a car with this type of repeated problem of stalling and not starting. It may be different parts, but are they band aids for something bigger?

NHTSA ODI #11424160

Mileage unknown · Jun 2, 2021
Latches/locks/linkagesCrash

On June 1, 2021 at about 9 p.m. the hood popped up, then the truck latch, the speedometer was reading a different speed than the cruise control without any interference, and the bluetooth and entertainment center were not operating correctly, yet no codes or warning lights. On resuming travel on I-80 a semi started flashing his…

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On June 1, 2021 at about 9 p.m. the hood popped up, then the truck latch, the speedometer was reading a different speed than the cruise control without any interference, and the bluetooth and entertainment center were not operating correctly, yet no codes or warning lights. On resuming travel on I-80 a semi started flashing his lights and veered out of the way so I slowed, and the parking brake engaged without my use of the parking brake as I was travelling at 80 mph, slowed to 45 with the semi. Struck a road marker and the wheels were locked up on the interstate and steam appeared along along the windshield and passenger window with some whining from transmission. I notified Acura (Montreal) from alongside the interstate. Research revealed that this problem has been reported in many different types of Acura since 2015. There were many warning lamps that appeared after the lock-up with two messages "Emission System Problems" and "Electric Parking Brake Problem" with the mileage at 43k. When I tried to move the car individual wheels locked up, first driver rear, then front passenger, followed by front driver and rear passenger. There was smoke coming out from the wheels, and the front bumper has physical damage. Seeing this problem existed for years, and not the seriousness and intensity of the problem grew it is hard to understand how Acura and the NHTSA cannot issue a recall when this could have been a serious calamity on a major interstate causing loss of life, injury and serious interruption with interstate commerce. The vehicle was towed to Acura dealership in Reno on June 2, 2021 and the dealership's service department has been very helpful.

NHTSA ODI #11419428

71,000 miles · Feb 28, 2021
EngineFuel/propulsion System

WHEN DRIVING AS GEAR CHANGES WHILE HITTING THE GAS ,MY CAR JULTS AS IF GAS I RAN OUT OF GAS AND HARD ENOUGH TO MAKE ME FEEL LIKE IM GETTING WIPLASH AND DOSE IT AROUND 25MPH AND 55-60 MPH AND RPM WIL JUMP AND GO BACK TO NORMAL

NHTSA ODI #11398274

Official recalls

4

26V332000 · Air Bags:sensor:occupant Classification:front Passenger

May 21, 2026

Honda (American Honda Motor Co.) is recalling certain 2018-2021, 2023 Acura TLX, 2019-2024 RDX, 2017-2020, 2022-2026 MDX, 2017-2021, 2023, 2025 Honda Ridgeline, 2017-2022 Pilot, 2019-2021 Passport, 2018-2026 Odyssey, 2019-2022 Insight, 2019-2021 HR-V, 2018-2020 Fit, 2020-2022 CR-V Hybrid, 2017-2022 CR-V, 2017-2018, 2021 Civic Type R, 2017-2021 Civic hatchback, 2016-2020 Civic coupe, 2016-2022 Civic, 2017-2022 Accord Hybrid, and 2016-2022 Accord vehicles. The front passenger seat weight sensor may crack and short circuit, which can cause the air bags to deploy unintentionally during a crash.

Consequence & remedy

Consequence: Air bags that deploy unintentionally during a crash increase the risk of injury.

Remedy: Dealers will replace the seat weight sensors, free of charge. Owner notification letters were mailed July 7, 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are BOL, WO9, OOA, WOM, XOH, NOC, POD, BOE, UOF, POB, EOG, AOI, QO8, TOJ, DO7, and SOK. This recall expands previous NHTSA recall number 24V064. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning May 29, 2026.

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.

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.

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.