Acura TLX collision warning 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 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 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 Feb 20, 2025 · Engine · 70,990 miles · FL

The contact owns a 2020 Acura TLX. The contact stated that while his wife was driving at an undisclosed speed, the "Pull Over Immediately" message was displayed. The contact's wife pulled over, and the "Hill Start Assist Problem", "Collision Mitigation System Problem", "Road Departure Mitigation Problem", and "Blind Spot Info System Problem" messages were displayed. The vehicle was towed to the dealer, who determined that there was oil leaking from the crankshaft seal into an unknown sensor. The dealer repaired the recall under the federal safety agency Campaign Number: 23V751000 (Engine and Engine Cooling); however, the failure persisted. The vehicle was idling rough and failed to accelerate while driving. Several unknown messages were displayed. The vehicle was towed back to the dealer, who test-drove the vehicle for 30 miles and performed an unknown repair. The manufacturer was made aware of the failure. The failure mileage was 70,990.

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.

Filed Aug 29, 2024 · Driver assistance · 45,000 miles · IA

The contact owns a 2019 Acura TLX. The contact stated that the auto START/STOP system was inoperable, and the vehicle was repaired under TSB Number: 22-008. Additionally, the contact stated while driving at various speeds, the Lane Keeping Assist System (LKAS) was intermittently inoperable. The contact stated that on the occasions that the LKAS was operable while driving, the lane keeping assist caused the steering wheel to jerk and pull the vehicle into another lane. The contact stated that the failure had been recurring while driving. Additionally, the contact stated that the Collision Mitigation Braking System (CMBS) engaged while there was no other vehicle nearby. The contact stated while driving 70 MPH, the vehicle sputtered, jerked, decelerated, and significantly pulled towards side of the road. The contact was able to safely pull to the side of the road. The messages "Road Departure Mitigation Problem", "Lane Keeping Assist problem", "Collision Mitigation Braking System Problem" and other unknown messages were displayed. The vehicle was taken to the dealer, where the contact was informed that the Forward Collision Avoidance camera had failed. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 45,000.

Filed Apr 10, 2024 · Electrical · 52,000 miles · CA

The contact owns a 2017 Acura TLX. The contact stated that while operating the vehicle with the A/C activated, the braking system, Lane Departure, Forward Collision Avoidance, and transmission messages were displayed. Additionally, the brakes engaged without the brake pedal being depressed. The contact stated that the failure also occurred while driving in a rainstorm, and on a humid weather day. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure. The failure mileage was 52,000.

Filed May 12, 2023 · Driver assistance · MA

while driving on a 2 lane road that curved to the right, the Collision Mitigation Braking System (CMBS) activated for no apparent reason. The brakes engaged hard for a short period of time. Fortunately there was no vehicle behind me that could have rear ended me. I would say this is a serious safety issue under the right conditions .