2023 Acura TLX

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.

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.

The AWD components fail and turns the car into front wheel drive only. Yes it’s available. This puts mine and others after at risk due to expecting the car to accelerate at a full stop instead, it causes me to slowly accelerate <5 mph until the system recognizes it’s in FWD only. I fear that someone will rear end me expecting the car to go faster than it can in that moment. Yes, this has been reported to a reputable dealer and was told they could not create the issue once clears after turning car off and back on again. This car has not been inspected by anyone other than the local Acura dealership. There were no prior warnings other than when it was cuts out. This pops up on the dash and is effective immediately putting the car into a limp state. This is happening one a week and has been occurring for once the car hit ~40k miles.

NHTSA ID

11743017

Incident

Oct 2, 2025

Purchased a 2023 TLX Aspec with Telecommunication package from Carvana. When I as unable to connect my device to the vehicle, I took it to my local Acura dealer per the limited warranty instructions. It was there after they removed the dash, we discovered the control device was missing and the bracket was missing and the coaxial connector that attaches it to the dashboard is broken. The cellular device was removed as well to avoid tracking. With the harness damage, the correct repair to the car with the low miles it has is to replace the harness and then replace the missing part and the bracket. None of this was disclosed at the time of purchase. I have tried reaching out to Carvana and the only answer I receive is to email their fraud department, which I have twice.

NHTSA ID

11712325

Incident

Jan 21, 2026

Car’s advertised anti-theft features are faulty. They have two tracking features with also both failed. When I contacted Acura they said this was a known issue and highly prevalent in NY, DC, FL, MD. Cars computer is cloneable and it takes less than 3 minutes to enter and steal without keys or breaking windows or enabling alarms.

NHTSA ID

11699323

Incident

May 9, 2025

If you don't turn the car off and you drop a passenger off from the front seat the seatbelt not fastened alarm will go off until you fasten it or turn the car off then restart the car to clear the alarm taking it to the dealership.

NHTSA ID

11697333

Incident

Oct 25, 2025

Car was stolen unreasonably easily. Car alarm did not sound, Acuralink tracking was immediately disabled. Car started and drove away despite keys being secured in a faraday box. Acura has a fatal design flaw in their hardware/software that makes theft of the TLX extremely easy. Evidenced by numerous online complaints from owners like myself, as well as by IIHS study on most stolen cars. TLX appears as both the second and fifth most stolen car relative to average:[XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11685759

Incident

Sep 5, 2025

ALL FOUR BRAKE ROTORS ARE BENT ON 30K MILES

NHTSA ID

11675743

Incident

Jul 23, 2025

I had an awful noise that accompanied a sticky/ inconsistent brake pedal feel and braking concerns. Upon contacting multiple dealerships and honda corporate is was told everything is working as designed. I filed a claim with NCDS and was awarded a repair. When contacting the dealership and manufacturer they did another inspection and said it's working as designed and there was nothing to repair. Now in the news they are recalling approximately 250,000 Hondas/Acura vehicles for a safety issue with the brake pedal. There is no information on what the recall is supposed to entail. My vin is still not associated with the recall. This is a safety issue that the manufacturer has been ignoring for a long time now.

NHTSA ID

11671984

Incident

Sep 1, 2023

My TLX Tech 2023 lost complete power while I pulled up to a busy intersection on a dark and rainy day. As a puled to stop and my idle stop enabled the car was fine. Once I tried to accelerate the car immediately went into Park from Drive. All of the controls started to blink and the car powered down like a computer system who was on 0%. I completely lost power, so that I could not even put my hazard lights on to indicate to the busy oncoming traffic that I was in danger. When the police arrived, he even tried to shift to neutral to help me roll out of the street, but the car was inoperable. I had to remain in the car due to the freezing rain and sleet. The emergency services called an emergency tow to get me out of the street and I was then towed to the nearest Acura dealership to get it reviewed. The service department indicated that they had known about the idle start/stop issue, but not on my specific model. I had my car inspected just the day before at the same dealership and there were no issues that had come up. I am concerned that this is very dangerous and leaves me in a vulnerable state.

NHTSA ID

11554520

Incident

Nov 9, 2023

Over The Air Update - Vehicles equipped with the System Updates application are capable of downloading and installing Over the Air System Updates. System Updates contain upgrades that fix a variety of operational errors and/or enhancements that add new functionality. Information for the various software releases can be found in this document. Software version: D.1.6.4

Service Bulletin - Oil leak at the cam chain tensioner inspection cover due to and insufficient sealant adhesion on the inspection cover.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023 RDXs and TLXs with a client complaint of the "Emissions System Warning" Malfunction Indicator Light (MIL) on with DTC P2101 (Electronic Throttle Control System Malfunction) stored. Client may experience the vehicle going into "limp" mode. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to your attempting a repair of any kind.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023 RDXs and TLXs with a client complaint of the "Emissions System Warning" Malfunction Indicator Light (MIL) on with DTC P2101 (Electronic Throttle Control System Malfunction) stored. Client may experience the vehicle going into "limp" mode. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to your attempting a repair of any kind.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022- 2024 MDXs & 2021-2025 TLXs with a client complaint of a loose or detached rearview mirror bracket. 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.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2023 TLX ADV’s and 2021-2025 TLX 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.