Acura TLX adaptive cruise 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 Mar 10, 2026 · Brakes, Transmission · FL

Driving towards the gas station, still at lows speeds while I was in the neighborhood so speed limit was 15mph. I can hear and feel the car struggle to move forward, about 2 minutes into the drive a hear a big TOON and check engine light is on for about a minute before going away. I filled gas and headed back home and I heard a larger TOON but this time all the warning light came up. These are all errors reported by the car at the same time - Vehicle Stability System - Hill Start Assist Problem - Addictive Cruise Control System Problem - Collision Mitigation Braking System Problem - Road Departure Mitigation System Problem - Emission System Problem - All Wheel Drive System Problem - Brake System Problem These are all errors that appeared on the Acura app - Emission System Problem - Vehicle Stability System - Electric Parking Brake Problem - Electric Power Steering Problem - Adaptive Cruise Control Problem

Filed Jan 30, 2026 · Driver assistance · OH

The front camera that operates the cruise control, lane assist, automatic braking, automatic high beam has stopped working. After further research it seems to be a popular problem with this car in a short amount of time. This car is a 2020 with 61,000 miles. The camera costs approximately $2000 to fix and should have a longer life span.

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 Oct 2, 2025 · Driver assistance · MD

Multiple dash lights including "brake system failure, collision mitigation system problem, adaptive cruise control problem, road departure mitigation system problem, etc." RPMs effected, car does not shift into third gear. Safety of myself and others were at risk because the vehicle stalled then would not go over 20mph. Had this been a busy highway, lack of warning could cause a major collision. The vehicle was recently inspected and passed by Criswell Honda, Gaithersburg and purchased by me today. No dash lights were displayed. I drove less than 100 miles before the issue occurred. The vehicle is currently being towed back to Criswell Honda for diagnostics and repair (or I was told that is what they will be doing).

Filed Sep 25, 2025 · Driver assistance · TX

Warning lamps appeared for forward collision, lane keep assist, auto high beam, brakes, adaptive cruise control.

Filed Sep 8, 2025 · Electrical, Wheels · 90,000 miles · UT

The contact owns a 2020 Acura TLX. The contact received notification of the federal safety agency Campaign Number: 23V751000 (ENGINE AND ENGINE COOLING) and an unknown recall for the tires, and another for the trim around the doors. The contact stated that the recall repairs were completed. The contact’s son picked up the vehicle from the dealer and noticed that the front windshield was cracked. Additionally, while driving 65 MPH, the vehicle vibrated abnormally, and the driver was unable to control the vehicle. The contact stated that the front passenger’s side tire detached from the vehicle. The driver was able to regain control of the vehicle and pulled over to the side of the road. Several messages were displayed on the instrument panel including messages that the cruise control was inoperable, assist line Collison system inoperable, road mitigation system unavailable, Collison Mitigation system failure were displayed. When the tow truck arrived at the scene, the tow truck driver noticed that bolts connected to the spindle had detached. The vehicle was towed to a tire specialist and the tires were replaced. The manufacturer was not made aware of the failure. The failure mileage was approximately 90,000.

Filed Aug 8, 2025 · Electrical, Steering · NC

The wipers come on by themselves and do not turn off. The engine may or may not start with the key fob nearby. All the dash warning lights come on with warnings about the brake system, the transmission, the steering, the adaptive cruise control all reporting a problem. The vehicle goes to limp mode and throttle response is severely reduced. There is some sort of water leak which is shorting out or causing the BCM or body control module to act erratically due to water from rain getting into the area because of improper weather sealant placed during manufacturing. There is a service bulletin that was put out in roughly April of 2024 that describes this issue affecting the 2021 TLX models.

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 Dec 26, 2024 · Driver assistance, Electrical · CA

The vehicle's dash states the following are malfunctioning: Road Departure Mitigation System, Adaptive Cruise Control, Auto High Beam, Collision Mitigation System, and Lane Keeping Assist. The vehicle is available for inspection upon request. A few days prior to this message appearing on the dash, the car flashed and beeped that I needed to BRAKE when there wasn't anything in front of me while driving. The car automatically braked without me doing anything. There weren't any vehicles behind me in that specific moment. With how sudden the car braked, this could have caused a collision. This vehicle has been repaired by the dealership where it was purchased, for this exact issue. The first sign of sensors malfunctioning was in January 2022 (I purchased the vehicle in June 2021). I have taken the vehicle to the dealership for repairs 3 times in relation to sensor malfunction and for replacement of rear actuators, which is stated in the Service Repair Summaries. Since the last repair in 2023, the same problem has occurred once again. This latest incident has included the automatic braking without any objects in front of the vehicle. I have not driven the vehicle in two days due to this safety concern.