Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2015 Acura TLX owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact's client owns a 2015 Acura TLX. The contact stated while the client was driving 65 MPH, the vehicle shut down in the middle of traffic. There were no warning lights illuminated. The contact stated that the transmission failed to shift into drive or reverse. Additionally, there was an unknown failure with the brakes and transmission. The contact stated that the failure was related to NHTSA Campaign Number: 23V751000 (Engine and Engine Cooling). The vehicle was towed to the local dealer, where it was diagnosed and determined that the instrument cluster had failed and needed to be replaced. Additionally, the catalytic converter needed to be replaced. The contact stated that the driver suffered a stroke after the failure, and medical attention was provided. The manufacturer was contacted and opened a case. The failure mileage was approximately 67,000.
While driving approx 65 mph on a freeway the vehicle placed itself into neutral and decelerrated as multiple warnings flashed across dashboard. . . "Emissions System Problem", "Transmission System Problem", "Electric Parking Brake Problem". I was able to pull off to the side of an exit ramp but once I put the car in PARK I could not shift into Drive. I could not safely drive/manuever my vehicle to a safer area putting myself and child at risk of being hit. I turned the car on/off multiple times to attempt to shift into Drive, but to no avail. I called the nearest Acura dealer which was in the next town over from where I was stranded. After many failed attempts I was able to put the car in Drive and move my vehicle to the closest road and off to the side but with the warnings still flashing. …
I was driving on the freeway going at the speed of traffic about 65-70mph then suddenly I heard my car engine slowing down and multiple lights popped up on my dashboard. I looked at my speedometer and it indeed was decreasing in speed. I tried to accelerate little by little and it did not. My check brake system, check brake hold system, check power steering system, check VSA system, check hillstart assist system, check emission system lights popped up on my dashboard. My car felt like I was popping the clutch, jerking a lot. I was able to move over to the right shoulder and park. I turned the car off and I was able to turn it back on unfortunately but the lights were still popping up and my car kept jerking and not accelerating. This happened while driving on the highway this is extremely dangerous! There has been others with the same issue.
Car has feature that kills engine when at full stop. Car fails to automatically restart, often stalling at intersections and causing a dangerous situation. Car has to be turned off and restarted, a process that can take 15 to 30 seconds. With a brand new battery and/or full charge, the car performs flawlessly. It appears that the electrical demands of the car system exceed the ability of the battery and alternator to meet demand. I currently have an AGM battery less than two years old. We typically have 1 to 3 incidents per month where will forget to disable the auto start system, and the car stalls in busy traffic when at a full stop. We bought the car used in 2017, and this problem has been consistent throughout ownership. Dealer answer is that there is nothing wrong with car.
This issue is with the start-stop system. The car fails to restart after it the car stops and the engine shuts off. The car has been serviced twice for this issue. The battery and a cable were replaced at my expense. This resolved the issue for a few months, but it returned again in February of 2022. The battery was replaced under warrantee at that time. This issue has now returned again July, 2022. In at least two of the instances I felt I was extremely at risk as the car was stalled in busy intersections forcing traffic to make emergency stops be hind me or take evasive actions to avoid hitting my car. The normal starting procedure to start the car did not seem to work. There was nothing to indicated to me that there was an issue.
First item: vehicle keeps shutting off during idle while parked or while brake is depressed. It has happened multiple times. I've done some research and see there are several sites indicating issues with the fuel pump and vehicle stalling. Acura says there are no current recalls. I'm not the only person this is happening to. Second issue: vehicle has gone into neutral on its own while driving. At first I thought maybe I hit the neutral button by mistake and didn't think of anything but then the most recent was coming out if a gas station and pulled up to a stop sign and it went into neutral. I just bought this car on June 1st.
The car was in motion then shifted into a different gear . I didn't have have control of the gears. A digital "check transmission" warning flashed on the car dashboard. After 2 hours I removed the terminal from the battery in order to move the car. The car stopped in the middle of the road during this problem. Someone could've hit me from behind with my children in the car . One car was close enough to hit me but ended up swerving into a ditch to avoid hitting my car . I spoke to Marietta Acura Dealership in GA and was told there was no recall on my car .
Multiple warnings occur on information screen. 1. Transmission system problem. 2. Blind spot info system problem. 3. Electric parking brake problem. 4. Emissions system problem. Transmission begins to slip and behave radically. RPM rev above normal as if it can't upshift. Dealer recently did service on transmission and replaced module. Also had recall service completed for stalling at intersections/full stop. Vehicle has had transmission issues throughout our ownership. approx. 6 yrs. bought used from dealer.
The car is constantly throwing codes for faulty emissions system problem and parking brake problem but the car runs fine. The dealership will not do anything unless I pay them a fee to diagnose it and then they suggest replacing the catalytic converter even though it's very likely a faulty fuel hose or faulty sensor. This needs to be recalled and fixed immediately
While driving on a highway the car lost all power and every dashboard light came on and started blinking. Car wouldn't shift gear and lost all power abruptly! I almost caused a horrible accident and this has happened at least 10 times now and I've only had my car a year!!!!
Electrical complaints in other TLX years
Frequently asked questions
How common are electrical problems on the 2015 Acura TLX?
NHTSA has 64 complaints about the electrical system of the 2015 Acura TLX, 19% of the model year's 344 complaints. The component named most often is instrument cluster/panel (1 mentions).
Is there a recall for 2015 Acura TLX electrical problems?
No. NHTSA lists no electrical system recall for the 2015 Acura TLX, though it has 6 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2015 Acura TLX electrical problems start?
Half of the complaints with a recorded mileage happened before about 43,000 miles, and 36% before 25,000 miles.
Is it dangerous?
Owners linked 2 crashes, 0 fires and 3 injuries to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.