2018 Acura TLX: adaptive cruise control problems

Filed Sep 22, 2026 · Driver assistance, Electrical · TN

I own a 2018 Acura TLX with approximately 41,384 miles. While driving, multiple safety-system warnings suddenly appeared simultaneously, including: Lane Keeping Assist Problem Adaptive Cruise Control Problem Auto High-Beam Problem Collision Mitigation System Problem Road Departure Mitigation System Problem Brake System warning I safely stopped the vehicle, shut it off, and restarted it. The warnings initially disappeared but later returned, including when I started the vehicle to take it to the Acura dealership. An authorized Acura dealership inspected the vehicle and retrieved multiple diagnostic trouble codes, including U3000-49, indicating an internal electronic failure associated with the multipurpose camera/driver-assistance system. The dealership cleared the codes, retested the vehicle, and confirmed that the fault returned. The technician also tested the battery, alternator, starter, and camera ground. The brake system was inspected, and no separate braking problem was identified. The dealership diagnosed a failed monocular camera requiring replacement. Safety concern: Multiple driver-assistance systems became unavailable unexpectedly while I was driving, including collision mitigation, lane-keeping assistance, road-departure mitigation, and adaptive cruise control. The simultaneous failure of these systems creates a safety concern because the vehicle's collision-prevention and driver-assistance features may be unavailable without advance warning. The dealership quoted approximately $2,400 for the camera replacement. The vehicle has only 41,384 miles. I have photographs and video documenting the dashboard warnings, as well as the dealership's diagnostic trouble code report and repair estimate. These records are available upon request. I am submitting this complaint to document the unexpected failure of multiple driver-assistance safety systems and request that the federal safety agency evaluate whether this represents a potential safety-related defect.

Filed Oct 5, 2025 · Driver assistance · CA

I got 5 lights on my dash stating that I have an auto high beam problem, road departure mitigation system problem, collision mitigation system problem, lane keeping assist problem, and adaptive cruise control problem. I got these lights on my dash at the exact same time and this happened 1 week after my car alarm started going off randomly. I will now have to change my windshield camera sensor. Seems like this is an issue with many Acura owners.

Filed Apr 17, 2025 · Driver assistance · 54,000 miles · TX

The contact owns a 2018 Acura TLX. The contact stated that while driving at an undisclosed speed, the Acura Watch warning light illuminated. The Adaptive Cruise Control, Lane Keep Assist System (LKAS), and Collision Mitigation warning lights were illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the Acura Watch bumper sensor. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 54,000.

Filed Mar 20, 2022 · Brakes, Electrical · CT

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.

Filed Jun 2, 2021 · Locks · NV · crash

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 federal safety agency 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.

Filed Jun 18, 2018 · Brakes, Electrical · 31,081 miles · MS

Tl* the contact owns a 2018 acura tlx. While driving at an unknown speed, on three occasions, the steering wheel seized while making either a left or right turn. The brake pedal was applied, but felt stiff and failed to respond. The accelerator pedal was applied, but the vehicle failed to move. In addition, the electrical system, emission, transmission, stability control, all wheel assist, blind spot, cruise control, and lane assist indicators illuminated. The vehicle was towed to acura of memphis (2611 ridgeway rd, memphis, tn 38119) where it was diagnosed that the vehicle overheated and the automatic start malfunctioned. The vehicle was repaired, but the failures recurred. The manufacturer was not notified and opened case number: 08586429. No further assistance was provided. The failure mileage was 31,081. The VIN was not available.