2021 Acura TLX
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
Have the VIN?
These records cover every 2021 Acura TLX. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
4 recalls name the 2021 Acura TLX. Newest first.
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…
Risk and remedy
Risk
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.
Honda (American Honda Motor Co.) is recalling certain 2021-2025 Acura TLX, 2023-2025 Acura MDX, and 2023-2025 Honda Pilot vehicles. The brake pedal pivot pin was not secured properly, which can cause the pedal to shift out of position. As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard numbers 108, "Lamps, Reflective Devices…
Risk and remedy
Risk
A brake pedal that shifts out of position can prevent the driver from applying the brakes as intended, increasing the risk of a crash or injury.
Remedy
Dealers will inspect and replace the brake pedal assembly as necessary, free of charge. Owner notification letters were mailed July 29, 2025. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are FLX and XLY.
Acura (American Honda Motor Co.) is recalling certain 2021-2023 TLX vehicles. The fuel filler neck and fuel tank may have been improperly welded, which can result in a fuel leak.
Risk and remedy
Risk
A fuel leak in the presence of an ignition source increases the risk of a fire.
Remedy
Dealers will replace the fuel tank assembly, free of charge. Owner notification letters were mailed February 3, 2025. Owners may contact Honda customer service at 1-888-234-2138. Acura's number for this recall is JKX.
Honda (American Honda Motor Co.) is recalling certain 2020-2022 Pilot, Accord, Civic sedan, HR-V, Odyssey, 2020 Civic coupe, Fit, 2021-2022 Civic hatchback, 2021 Civic Type R, Insight, 2020-2021 CR-V, CR-V Hybrid, Passport, Ridgeline, Accord Hybrid, 2020 Acura MDX, 2022 Acura MDX, 2020-2022 Acura RDX, and 2020-2021 Acura TLX vehicles. The front passenger…
Risk and remedy
Risk
An air bag that deploys unintentionally during a crash can increase the risk of injury.
Remedy
Dealers will replace the seat weight sensors, free of charge. Owner notification letters were mailed March 28, 2024. This is a phased recall. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for these recalls are XHP and VHQ.
Owner complaints
72 complaints4 involved a crash3 injuries
What owners report most
Latest complaints
- Air bags · Electrical system · Service brakes
On October 4, 2026, at approximately 6:55 PM, the 2021 Acura TLX suffered a catastrophic and sequential collapse of its primary safety and electronic control systems while in motion. Without warning, the vehicle's dashboard suddenly illuminated with a cascade of severe system malfunctions…
On October 4, 2026, at approximately 6:55 PM, the 2021 Acura TLX suffered a catastrophic and sequential collapse of its primary safety and electronic control systems while in motion. Without warning, the vehicle's dashboard suddenly illuminated with a cascade of severe system malfunctions, beginning with a critical "Brake System Problem" warning, immediately followed by a "Power Steering System Problem," which caused the steering wheel to become dangerously heavy and difficult to maneuver. Simultaneously, a string of secondary critical alerts flashed across the information display, including a "Lane Assist System Problem," effectively disabling the vehicle's automated driver-assist, traction, and stability networks. This total electronic network blackout culminated moments later in a severe collision that caused significant structural damage, including a snapped front axle. Despite the force of the impact meeting the necessary physical criteria for severe crash deceleration, the vehicle’s Supplemental Restraint System (SRS) completely failed, and none of the airbags deployed
- Forward collision avoidance › Warnings · Lane departure › Assist · Power train
Vehicle losing traction while driving. Confirmed by [xxx]'s acura in [xxx]. Confirmed: transfer case with bad transmission. Vehicle now inoperable. Information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(B)(6)
- Power train · Suspension
I am submitting this complaint regarding a major drivetrain failure in my 2021 Acura TLX Type S SH-AWD with approximately 86,643 miles. My vehicle experienced a complete loss of AWD. The front two wheels are receiving power, but the rear wheels are no longer receiving power. An independent…
I am submitting this complaint regarding a major drivetrain failure in my 2021 Acura TLX Type S SH-AWD with approximately 86,643 miles. My vehicle experienced a complete loss of AWD. The front two wheels are receiving power, but the rear wheels are no longer receiving power. An independent mechanic initially diagnosed a transfer-case/drivetrain failure and advised that the transmission may also be involved. I then took the vehicle to OH Acura of Temecula, where the Acura dealership independently diagnosed the vehicle with transmission and transfer-case failure. The service manager confirmed that my independent mechanic’s diagnosis was accurate. The dealership provided a repair estimate of approximately $16,000. I am concerned because NHTSA previously opened investigation DP26-001 regarding reported failures involving the transmission and transfer case in 2021–2023 Acura TLX SH-AWD vehicles. My vehicle is now experiencing a complete loss of AWD consistent with the issue described in that investigation. I also experienced an unusual grinding noise on September 21, 2026, which lasted approximately five minutes before stopping. I was subsequently told the noise was caused by worn spindles. The noise has not returned, and I am not claiming that issue was related to the drivetrain failure. Acura declined goodwill assistance, citing lack of documentation for transmission maintenance. The vehicle is outside its original warranty. I am submitting this complaint so NHTSA has a record of my vehicle’s actual failure and complete loss of AWD and can consider it alongside other reports involving this vehicle and drivetrain configuration. I can provide the VIN, dealership diagnosis, repair estimate, and supporting documentation if requested.
- Fuel/propulsion system
My 2021 Acura TLX has a fuel leak. This is a known issue and manufacture design flaw. The Acura dealership has quoted my $4200 - $4500 to replace the fuel tank. I've contacted Honda and they've only offer $300 "goodwill" credit towards the repair. This is a know issue, a fire hazard, and other 2021 TLX has been recalled for this fuel tank/fuel leak issue via recall.
- Engine
I drive a 2021 Acura TLX TYPE S around 85K miles. I heard a loud clank when I was driving one day, and I loss traction. When I was accelerating I was losing traction and it seem like I lost power while I was moving as well. It seems like I'm driving front wheel drive. I let me foot of the gas and it seems like it's back to normal SH-AWD. I hope this gets looked into and fixed soon.
- Power train
The transfer case and transmission splines have been stripped causing the car to be FWD only. The issue was confirmed by the dealer, and both the transfer case and transmission were replaced under warranty. The car shuddered, followed by a drivetrain noise for a few seconds. No warning lights or messages appeared when the incident occurred. The issue occurred at approximately 26,574 miles on the odometer.
- Power train · Unknown or other
transfer case leaking fluids at 73,000 miles
- Power train
Transmission and transfer case failure. Noticed a very small amount of fluid leaking and took to dealership. Dealer informed me that I was "lucky" to have noticed and that the transfer case spline failure had occurred. Notified that the problem could lead to sudden loss of all wheel drive and loss…
Transmission and transfer case failure. Noticed a very small amount of fluid leaking and took to dealership. Dealer informed me that I was "lucky" to have noticed and that the transfer case spline failure had occurred. Notified that the problem could lead to sudden loss of all wheel drive and loss of vehicle control, vehicle slipping, and oversteer. DP26001 had indicated that these issues are a safety concern and could lead to an accident. I had noticed instability in certain issues where the rear of the car did not feel firmly planted when cornering (oversteer). Dealer indicated that both the transmission and transfer case need to be replaced. I was ~8000 miles within powertrain warranty. Parts are on a national backorder which indicates a widespread issue. No warning lamps or indication of seal failure that leads to stripped splines off the shaft due to the fluid leak. NHTSA does not understand how the Acura SH-AWD system interacts with vehicle dynamics and handling, and loss of the rear wheel drive and its impact on oversteer would be absolutely NO DIFFERENT than a rear sway bar breaking under load while cornering. I experienced this exact symptom on [XXX] where the road goes from 3 lanes to 2 lanes on a sweeping right hand curve. This is where I had felt like I may lose control of the vehicle, the rear of the car started to come around and I had to steer into the slide to regain control of the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
- Power train · Unknown or other
I'm losing power than normal all of a sudden. When I step on the gas after light hits green in sport and sport plus mode my car losses traction even when traction control is on, and I hear a loud clunck sound. After the the loud clunck sound the car losses RPM while driving I step off the gas and step back on it and the RPM goes back to normal again.
- Power train
I took this vehicle to get serviced in the summer of 2025. I recently joined an Acura Type S (2021+) group on Facebook and learned that the issue is quite prevalent. I had to have the transmission and transfer case replaced due to transmission issues and traction issues
- Power train
On July 7th 2026 I was driving home, came to a stop light at normal speed, when the light turned green I took off at normal speed and I heard a huge cluck / bang from underneath the car and it bogged and didn’t want to move. I then stepped on the gas because of the Car behind me getting to close…
On July 7th 2026 I was driving home, came to a stop light at normal speed, when the light turned green I took off at normal speed and I heard a huge cluck / bang from underneath the car and it bogged and didn’t want to move. I then stepped on the gas because of the Car behind me getting to close and my traction control light started to flash and the car started to shake and feel very uncomfortable to drive . After that I realize only the two front wheels of the car were working and even at low cruising speeds the car feels very unsafe and shakes and hear noises I never heard before the part that is causing this is the transfer case and transmission thus there are many other people who have had this same issues ranging from 21 to 23 tlx type s with 15k miles to 100k miles
- Power train
Transmission splines went out and transfer case has also failed which is only sending power to front wheels
- Engine · Fuel/propulsion system · Power train
On 07/01/2026, at approximately 8:00 AM, during steady acceleration, flashing of MIL with loss of power presented northbound after merging from 235 west bound to I-135 north bound near Park City, KS. Particularly dangerous resulting in near rear end collision. Upon taking nearest exit ramp…
On 07/01/2026, at approximately 8:00 AM, during steady acceleration, flashing of MIL with loss of power presented northbound after merging from 235 west bound to I-135 north bound near Park City, KS. Particularly dangerous resulting in near rear end collision. Upon taking nearest exit ramp, attached BlueDriver .OBD II reader, and fault code P0303 - Cylinder 3 Misfire and U0401-68 PGM-Fi/ECM/PCM system event code was logged, with multiple warning indicators that safety system, AWD, brake, and other systems were disabled. Note, vehicle has had TSB 20-053 update w/ flash of PGM-Fi which did not resolve the fault, fault associated with hot and humid climates or period of rain fall, apparent water vapor, condensate build up in intercooler. For Honda Accord and Acura RDX w/ 4 cylinder 2.0 TDGI engine TSB includes redesigned intercooler replacement, that is not available for TLX 21-25 which is currently out of production. This has occurred previously during humid and hot weather, but no intermittent flashing MIL does not store code. Thankful in this instance P0303 and U0401-68 code is stored, and scheduling service at dealership to diagnose misfire.
- Power train
2021 Acura TLX Type S SH-AWD. Total mechanical failure of PTU/transfer case spline interface at 29,800 miles within factory powertrain warranty. Vehicle operated silently in FWD-only with no warning lights, no fault codes, and no dashboard alerts — consistent with all complaints cited in NHTSA…
2021 Acura TLX Type S SH-AWD. Total mechanical failure of PTU/transfer case spline interface at 29,800 miles within factory powertrain warranty. Vehicle operated silently in FWD-only with no warning lights, no fault codes, and no dashboard alerts — consistent with all complaints cited in NHTSA Defect Petition DP26001 (opened March 6, 2026, NHTSA #11712885). Failure confirmed by dealer via lift test: propeller shaft and rear wheels stationary while fronts spun. During actuator test, Check AWD System light illuminated for the first time — because the lift removed road-induced wheel rotation that had masked the failure from the ECU throughout normal driving. This is the only condition under which this failure mode is electronically detectable. Dealer replaced transmission (remanufactured ATR kit) and PTU under warranty. Repair took 38 days. CRITICAL-THIRD PTU REVISION: Replacement PTU installed was part #29000-5YK-070. Known revision history: -050 (original, confirmed failure part) → 060 (revised ~2022) → 070 (installed June 2026). The 070 does not appear in any public OEM parts database. Acura has now revised this component three times with zero TSBs, zero public disclosure of engineering changes, and no recall. The 070 revision appearing after DP26001 opened in March 2026 suggests a silent root cause fix while avoiding formal recall obligations. CRITICAL-DPSM GOODWILL CLAUSE: Acura required acceptance of "One Time Goodwill Authorized by DPSM" as condition of repair. This was a warranty obligation, not a goodwill gesture. This clause was imposed while DP26001 is under active federal review, before factory warranty expires, with no confirmed root cause fix. If the 070 part fails again, this clause may be used to deny future warranty coverage. Requesting: (1) complaint added to DP26001 record; (2) Acura compelled to disclose engineering changes between part numbers 050, 060, 070; (3) investigation of DPSM Goodwill clause as systematic pre-recall liability limiation
- Power train
I am submitting this complaint in reference to NHTSA Defect Petition DP26001, opened March 6, 2026, investigating loss of all-wheel drive capability in 2021-2023 Acura TLX vehicles due to interfacing spline failure between the transmission and the power takeoff unit (transfer case). I am the owner…
I am submitting this complaint in reference to NHTSA Defect Petition DP26001, opened March 6, 2026, investigating loss of all-wheel drive capability in 2021-2023 Acura TLX vehicles due to interfacing spline failure between the transmission and the power takeoff unit (transfer case). I am the owner of a 2021 Acura TLX SH-AWD with 55,300 miles. I purchased this vehicle on June 2nd, 2026. I have not yet experienced a failure, but I am registering as an affected vehicle owner given the known defect pattern documented in DP26001 and consistent with the 137,329-vehicle population identified in the NHTSA investigation. The failure mode as described in DP26001 involves stripping of splines at the transmission-to-PTU junction, resulting in sudden and complete loss of rear-wheel drive without warning lights or dashboard indication. Documented repair costs for this failure range from $5,000 to $19,000 depending on extent of damage. I am registering this complaint to be included in the documented owner population should the petition escalate to a formal defect investigation or recall. I request notification of any recall action, extended warranty coverage determination, or technical service bulletin issued for this failure pattern.
- Fuel/propulsion system
El problema es exactamente en el tanque de la gasolina, se está saliendo la gasolina en la unión de la manguera de llenado con el tanque de gasolina. Esto representa un riesgo no solo para mi seguridad sino también para cualquier persona.
- Power train
Transfer case failure. I was driving my 2021 Acura TLX Type S when I suddenly heard a loud pop from underneath the car. Right after that, the SH AWD system stopped working and the car was only driving in front wheel drive. There were no warning lights or signs before it happened, due to it being a…
Transfer case failure. I was driving my 2021 Acura TLX Type S when I suddenly heard a loud pop from underneath the car. Right after that, the SH AWD system stopped working and the car was only driving in front wheel drive. There were no warning lights or signs before it happened, due to it being a mechanical failure and not an electrical one because the car does not have sensors for the transfer case. After getting it checked out, I was told the splines between the transfer case and transmission were stripped. I’ve also seen that a lot of other 2021 to 2023 TLX Type S owners have had the same problem. It’s concerning because the AWD system failed out of nowhere, especially since the car depends on it for traction and stability. The car now needs a new transfer case and possibly more drivetrain repairs. (Proof shown in pdf down below, only front wheels spinning)
- Engine · Power train
I drive a 2021 Acura TLX 2.0 L turbo 4 cylinder. I was driving to work on [XXX] on a busy street in Boyle Heights, Ca. When all of sudden I get a warning indicator “engine temp is high do not drive”. Pulled over immediately. Good thing I was in the far right lane and was able to pull over and not…
I drive a 2021 Acura TLX 2.0 L turbo 4 cylinder. I was driving to work on [XXX] on a busy street in Boyle Heights, Ca. When all of sudden I get a warning indicator “engine temp is high do not drive”. Pulled over immediately. Good thing I was in the far right lane and was able to pull over and not stall or get rear ended by another vehicle behind me. There were no warning, symptoms and indicators of the engine's overheating. My vehicle has been in great condition prior with no major or minor issues with my vehicle. We took it to two dealerships for diagnostics. The head gasket blown, empty coolant reservoir, cracked engine block, and other parts of the engine were affected. What if I was on a highway and the car stalled. I could’ve been seriously injured or seriously injured someone else on the road. Acura corporate is aware of our situation and refuse to own their engine safety defects. They want us to pay out of pocket to repair our vehicle. My car is 5 years old there is no way out of nowhere my vehicle should have this type of engine issues. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
- Suspension
Dealers are investigating and need replacing rear shocks/solenoids, stroke sensors, and wiring harnesses. The issue is commonly identified as corrosion in the rear stroke sensor wiring harness or faulty damper make "Adaptive Damper System" (ADS) error light on and can't not make change for the setting as acura design issue !
- Power train
Took my car for an oil change and found that the transfer case is leaking its fluid. Known to lead to tranfer case failure.
- Power train
} I am submitting an update to my previous complaint. In my original complaint, I stated that the vehicle had not received transmission service. After reviewing my records, I confirmed that a transmission fluid service (drain and refill with inspection) was performed at an Acura dealership in July…
} I am submitting an update to my previous complaint. In my original complaint, I stated that the vehicle had not received transmission service. After reviewing my records, I confirmed that a transmission fluid service (drain and refill with inspection) was performed at an Acura dealership in July 2024. Despite this maintenance, the transmission still failed at approximately 84,000 miles. I am providing this update to ensure the complaint is accurate
- Power train
I am reporting a transmission failure in my 2021 Acura TLX with approximately 84,300miles. While driving under normal conditions, after about 30 minutes on the road, I came to a stop at a red light. When I attempted to accelerate again, the vehicle would not shift out of first gear. The engine…
I am reporting a transmission failure in my 2021 Acura TLX with approximately 84,300miles. While driving under normal conditions, after about 30 minutes on the road, I came to a stop at a red light. When I attempted to accelerate again, the vehicle would not shift out of first gear. The engine would rev, but the transmission failed to upshift. I also experienced a hard and abrupt engagement when shifting the vehicle into reverse. This issue occurred suddenly without warning and made the vehicle unsafe to operate in traffic, as I was unable to accelerate properly or maintain normal driving speed. The vehicle has been regularly serviced at an Acura dealership. At the time of the incident, the transmission fluid had not yet been replaced but had recently been recommended during a scheduled service visit. The vehicle is currently at an Acura dealership where I normally get the car serviced. The dealership has diagnosed the issue as an internal transmission failure and is recommending a transmission replacement.
- Unknown or other
Sunroof exploded during drive on highway. No contact was made by any small or large objects
- Power train
2021 Acura TLX A-Spec SH-AWD and my transmission is leaking from the seal between the transmission and the differential. Acura is not sure if they can cover it under warranty because I am slightly past the powertrain warranty even though they had my car about a week ago when it was just barely past…
2021 Acura TLX A-Spec SH-AWD and my transmission is leaking from the seal between the transmission and the differential. Acura is not sure if they can cover it under warranty because I am slightly past the powertrain warranty even though they had my car about a week ago when it was just barely past that point and no one said anything about the leak on the transmission until I checked with a certified Acura mechanic somewhere else.This is not just some small problem because with fluid leaking and leaving it will eventually damage the transmission and the differential or even just make them completely give out. This can be gears grinding and overheating. It is not just a problem it is also a SAFETY HAZARD if this starts dripping onto the exhaust pipe or even on the road behind making traction a problem for someone behind. This needs to be under a recall not just warranty with how much I see this happening to these cars this is ridiculous we have to go through this.
- Power train
Transfer Case has gone out. No longer getting power to the rear wheels as it is a AWD car. Problem has not been checked by the dealer yet. There were no warning lights on the dashboard when it went out.
Defect investigations
NHTSA’s Office of Defects Investigation opened these reviews into vehicles including this one.
- All wheel drive allegation
The Office of Defects Investigation (ODI) has completed its review of a Petition dated January 9, 2026, requesting an investigation into the loss of the optional all-wheel drive capability in model year (MY) 2021-2023 Acura TLX and MY 2022-2023 Acura MDX vehicles. The Petition alleges failures in the interfacing…
The Office of Defects Investigation (ODI) has completed its review of a Petition dated January 9, 2026, requesting an investigation into the loss of the optional all-wheel drive capability in model year (MY) 2021-2023 Acura TLX and MY 2022-2023 Acura MDX vehicles. The Petition alleges failures in the interfacing splines between the front wheel drive transaxle and the rear wheel drive power take off unit. Failure of these splines prevents the transfer of drive power to the rear axle, making the vehicle front wheel drive only. The Petition further alleges that this failure reduces vehicle directional control. Most traditional AWD systems utilize mechanical and passive measures. These systems have the tendency to distribute torque along the path of least resistance, such as a wheel that has lost contact with the ground or is on a low friction surface such as ice. To compensate for this, many manufacturers use the brake system to redirect torque to the wheels with more traction. However, in this style of AWD system, a failed drive shaft or similar disconnection prior to the brakes often results in drive power being lost to the disconnected component. The consequence of this loss is the inability to maintain speed with surrounding traffic which increases the risks of collisions and injuries to the vehicle occupants. The Subject Vehicles are built upon a platform that was designed primarily as Front Wheel Drive (FWD). The SH-AWD system functions more as a performance enhancement feature rather than a stability feature. Even if the SH-AWD is nonoperational, the vehicles retain full mobility via FWD. In addition, the Vehicle Stability Assist (VSA) remains functional, ensuring directional stability through traditional engine and brake-based traction control. Although the condition raised by the Petitioner may degrade the vehicle’s performance characteristics, there is insufficient information to indicate a potential unreasonable safety risk. ODI reviewed 62 Vehicle Owner Questionnaires (VOQs) and several EWR Field Reports alleging the loss of SH-AWD and its impact on the driving dynamics of the subject vehicles. During its analysis, ODI determined that the failure is localized to the mechanical interface between the FWD transaxle and the PTU. Specifically, the failure is the shearing or stripping of the interfacing splined shafts between the FWD transaxle and the PTU, resulting in a permanent loss of torque transfer to the rear of the vehicle. Upon reviewing the technical details of SH-AWD, ODI has found that this failure does not result in any loss of motive power or lead to a loss of vehicle control. Several complaints indicated that the operators were unaware of the mechanical fault until encountering a low friction surface or the condition was identified by a technician during routine maintenance. The SH-AWD system lacks any form of direct feedback for monitoring real time torque transfer to the rear wheels. Therefore, the system will continue to display information indicating power is being supplied to the rear wheels even when power is actually only supplied to the front wheels. ODI’s review did not identify sufficient evidence to indicate that the misinformation has presented a safety issue in the field. ODI did not identify any reports of loss of motive power or vehicle control that could be attributed to the loss of SH-AWD. ODI is not aware of any crashes involving the Subject Vehicles that resulted from the loss of SH-AWD. After thoroughly assessing the material submitted by the Petitioner, consumer complaint information in NHTSA’s databases, and other relevant information already in possession of the Agency, NHTSA has not found sufficient evidence to indicate that the loss of AWD as alleged by the Petitioner is likely to present a safety related defect that would warrant a formal investigation. After full consideration of the available information, and in view of NHTSA’s enforcement priorities, the Petition is denied. A denial report will be posted in the Federal Register. The closing of the petition does not constitute a finding by NHTSA that a safety related defect does not exist, and the agency reserves the right to take additional action if warranted by future circumstances. The Petition can be viewed at NHTSA.gov under ODI Number 11712885.
- No Restart After Auto Start/Stop Engages
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…
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.
Service bulletins
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
- 11011797Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX ADVs and 2021-2025 TLX Type Ss with a client complaint of the Adaptive Damper System Problem (ADS) error message on the MID (Multi Information Display). To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
- 11010681Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX ADVs and 2021-2025 TLX Type Ss with a client complaint of the Adaptive Damper System Problem (ADS) error message on the MID (Multi Information Display). To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
- 11010123Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX ADVs and 2021-2025 TLX Type Ss with a client complaint of the Adaptive Damper System Problem (ADS) error message on the MID (Multi Information Display). To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
- 11009195Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX ADVs and 2021-2025 TLX Type Ss with a client complaint of the Adaptive Damper System Problem (ADS) error message on the MID (Multi Information Display). To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
- 11008048Owner Notification Letter - A coaxial cable terminal was not manufactured to proper specifications. An improperly manufactured terminal may lead to poor communication in the media-oriented system (MOST) bus network which can potentially affect the audio sound quality.
- 11008046Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2025 MDX Type S's & 2021-2025 TLX ADV's or Type S's with a client complaint of the Adaptive Damper System Problem (ADS) error message on the MID (Multi Information Display). To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
- 11007893Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2025 MDX Type S's & 2021-2025 TLX ADV's or Type S's with a client complaint of the Adaptive Damper System Problem (ADS) error message on the MID (Multi Information Display). To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
- 11007651Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2025 MDX Type S's & 2021-2025 TLX ADV's or Type S's with a client complaint of the Adaptive Damper System Problem (ADS) error message on the MID (Multi Information Display). To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
- 11006809Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX ADVs and 2021-2025 TLX Type Ss with a client complaint of the Adaptive Damper System Problem (ADS) error message on the MID (Multi Information Display). To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
- 11005524Service Bulletin - A coaxial cable terminal was not manufactured to proper specifications. An improperly manufactured terminal may lead to poor communication in the media-oriented system transport (MOST) bus network which can potentially affect the audio sound quality.
- 11005521Dealer Message - A coaxial cable terminal was not manufactured to proper specifications. An improperly manufactured terminal may lead to poor communication in the Media Oriented System Transport (MOST) bus network which can potentially affect the audio sound quality.
- 10252481Service Bulletin - During engine start in cold conditions, a miscalculation in the PCM causes the air-fuel ratio to exceed DTC rich criteria.
- 10251896Service Bulletin - The MIL is flashing with a loss of power. This is most common in hot, humid regions, or after a period of rainfall. Humid air within the intake passage may condense and accumulate moisture during steady driving which enters the engine and may cause a misfire and a flashing MIL.
- 10244255Service Bulletin - The vehicle's brakes may exhibit a groan, squeal, or squeak noise, most commonly after the vehicle sits for a prolonged period and the brakes are cold. This noise will typically disappear after the first few brake applications.
- 10242214Service Bulletin - The client may experience a popping or crackling noise from the speakers, a blank display, or no sound from the audio system. They may also see a Network Loss message.
- 10235553Owner Notification Letter - An owner's notification that the owner has not completed the emissions recall for an improperly functioning on-board emission-related diagnostic system.
- 10233293Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Drivers door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously.
- 10233209Service Bulletin - Under certain circumstances, the vehicle may experience driveability concerns. This may result in the following DTCs to set: P0300 (Random Misfire Detected), P0301 (No. 1 Cylinder Misfire Detected), P0302 (No. 2 Cylinder Misfire Detected), P0303 (No. 3 Cylinder Misfire Detected), P0304 (No. 4 Cylinder Misfire Detected), P0172 (Fuel System Too Rich)
- 10232971Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Drivers door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously.
- 10232251Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Drivers door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously.
- 10231831Dealer Message- American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Drivers door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously.
- 10230599Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below.
- 10229693Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below.
- 10229692Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below.
- 10228203Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2021 RDXs & TLX L4s with a client complaint of an oil leak or a dealer technician noticing an oil leak from the head cover gasket during a routine maintenance. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
- 10228200Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Drivers door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously.
- 10227243Dealer Message - Background American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Drivers door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously.
- 10227237Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2021 RDXs & TLX L4s with a client complaint of an oil leak or a dealer technician noticing an oil leak from the head cover gasket during a routine maintenance. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
- 10226210Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Drivers door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously.
- 10226204Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2021 RDXs & TLX L4s with a client complaint of an oil leak or a dealer technician noticing an oil leak from the head cover gasket during a routine maintenance. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
- 10226201"Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Drivers door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously.
- 10225479Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022-2023 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Drivers door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously.
- 10224786Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2021 RDXs & TLX L4s with a client complaint of an oil leak or a dealer technician noticing an oil leak from the head cover gasket during a routine maintenance. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
- 10222821Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2021 RDXs & TLX L4s with a client complaint of an oil leak or a dealer technician noticing an oil leak from the head cover gasket during a routine maintenance. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
- 10222820Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for any & all 2022-2023 MDX Type Ss & 2021-2022 TLXs that match the criteria listed below. AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the Drivers door jamb must be between 1/2019 & 9/2021. 2. No DTC stored. 3. Electric Servo Brake (ESB) system has not been replaced previously.
- 10222078"Service Bulletin - The MIL comes on with DTC P0455 (Evaporative Emission [EVAP] System Very Large Leak Detected) stored. The fuel main flap unit may have stuck open, causing a DTC to set."
- 10219672Dealer message - The MIL comes on with DTC P0455 (Evaporative Emission [EVAP] System Very Large Leak Detected) stored. The fuel main flap unit may have stuck open, causing a DTC to set.
- 10219528Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2022 TLX Type S with a client complaint of a front brake noise. The noise can be described as a squeal/moan/groan/rubbing noise. The noise can also occur while turning. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
- 10216916"Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2022 TLX Type S with a client complaint of a front brake noise. The noise can be described as a squeal/moan/groan/rubbing noise. The noise can also occur while turning. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind."
- 10216896Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2022 TLX Type S with a client complaint of a front brake noise. The noise can be described as a squeal/moan/groan/rubbing noise. The noise can also occur while turning. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
Every Acura TLX model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.