Emission systems problem and parking brake problem lights came on simultaneously. Mechanic has not been able to figure out the problem Replaced vent valve
2018 Acura MDX driver assistance complaints
Page 2 of 2: complaints 11 to 28 of 28, newest first, as owners wrote them.
Warning lights for Collision Mitigation System, Road Departure Mitigation, Adaptive Cruise Control. Lane Keeping Assistance, Auto High Beam. Features are now disabled causing safety issue. Dealer confirms issues and recommends repairs that have not not been solved by others online. Errors appeared before battery Failure in March 2026. Battery was replaced. Common complaint by many online. Need recall to fix.
Front multipurpose camera is starting to fail intermittently. Multiple warnings pop up (LKAS, Auto High Beam, Forward Collision Warning)
Got multiple warnings, systems don't work: Collision Mitigation System, Adaptive Cruise Control, Lane Keeping Asist, Road Departure Mitigation System. All those additional systems designed for safety are no longer working. The front camera failed, as confirmed by the dealer. Part is available for inspection.
The front camera seems to be faulty and is throwing warning lights on the Dash. Lane keep assist system, front collision and adaptive cruise control lights show up. These warnings disappear when the car cools down, but does appear again
The front camera failure. Needs replacement. Camera apparently is used for the ACC , lane departure assistance.
While operating the vehicle, multiple driver-assist warning indicators illuminated on the dashboard, including LKAS (Lane Keeping Assist System), ACC (Adaptive Cruise Control), and CMBS (Collision Mitigation Braking System). The systems either disengaged or functioned erratically during normal driving conditions. At times, the vehicle failed to maintain lane position, abruptly disengaged adaptive cruise control, or displayed collision alerts when no obstruction was present. Now it is constant. Safety Impact: The failure of the LKAS, ACC, and related systems can cause unexpected loss of vehicle assist functions, leading to abrupt speed changes or compromised lane control, increasing the risk of collision if not promptly corrected.
The contact owns a 2018 Acura MDX. The contact stated that while driving 45 MPH, the vehicle lost motive power and stalled, with several unknown warning lights and the traction control warning light illuminated. The contact was unable to restart the vehicle, and the vehicle was towed to the dealer, who diagnosed a failure with the oil pressure switch. The oil pressure switch was replaced; however, the failure persisted. The contact stated that while driving approximately 70 - 75 MPH, the vehicle unintentionally decelerated to 40 - 45 MPH. The accelerator pedal was pumped until the vehicle accelerated with a crunching sound coming from the vehicle. The contact stated that the remote start failed to operate as designed occasionally. The vehicle was taken to a certified mechanic and was diagnosed with transmission failure; however, the vehicle was not repaired. The vehicle was taken to the dealer approximately 7 to 8 times due to the failure. The contact stated that the fuel pump was replaced; however, the failure persisted, and the transmission had experienced total failure. The contact was informed that the transmission needed to be replaced. The dealer informed the contact that the VIN was not included in the federal safety agency Campaign Number: 23V858000 (Fuel System, Gasoline), and the vehicle had exceeded the mileage for the transmission repair under warranty. The vehicle was not repaired. The manufacturer was informed of the failure and opened a case. The failure mileage was approximately 40,000.
5 waning lights on : Adaptive Cruise Control , Lane Departure Warning , Lane Keeping Assistance , front light, and the emergency braking . Service crew at Acura Dealer told me that the front multipurpose camera has internal error. It is very dangerous since all these functions must be fixed before I can drive it on road.
Lane Keep assist, adaptive cruise control, forward collision warning all stopped working and received error codes. Dealership stated camera was faulty and needed to be replaced at my cost. Continued issues with electrical systems where the car alarm will go off intermittently, and vehicle will not lock unless manually locking. Dealership stated smart control unit needs to also be replaced at my cost. part number for control unit #38320 was issued by honda motor company service bulletin 21-055 for their honda ridgeline. Acura Dealer will not honor since part number does not specify acura. Part issued in Service bulletin is 38320-T6Z-A11 (honda ridgeline) part needed to be replaced by acura is 38320-TRX-A11. Other service bulletins related to original issues: 20-015, 19-005, 23-008, and 24-022 and safety recall report 23V‑751. Dealership is still placing responsibility of repair of defective parts on car owner.
We experienced multiple/many warning lights all at the same time. Systems not working. Repeated every time. The Acura dealer diagnosed the problem to the DTC U3000-49 Multipurpose Camera internal electronic failure. Replaced the unit and they performed a couple of calibrations. Thank You, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
1.) I have had repeated, on-going issues with the fuel propulsion system since the day I bought the car. When I step on the accelerator it randomly (lately more constant than random) does not respond, then it will shoot me out into traffic. For example when I am entering the highway from an onramp, I see my opportunity to merge into traffic and I step on the gas - nothing - no response, then it suddenly accelerates and shoots me into oncoming traffic. This is SO BAD that I am afraid to drive the vehicle. It is DEADLY. I have reported the issue every time I have had the car serviced (always dealer serviced, from same dealer where I bought it.) 2.) The vehicle will randomly decide that I am going to hit a car in another lane, and will forcefully apply the brakes (when there is no issue, no danger, no possible way I am going to even be close to hitting another car) causing the cars behind me to come extremely close to rear-ending me! Or the car will decide I am going off the road when I am taking a soft curve, and it will sound a warning and try to turn the wheel. 3.) The display panel will go black for no reason. I then cannot use the navigation screen. It will randomly return after a few hours or after a day or two. 4.) The camera/display will get stuck on the reverse camera causing a visual disconnect as I drive forward, but can only see what is in reverse. (like seasickness). No idea what causes it or how to fix it. Eventually it corrects itself after a few hours/day+. 5.) Car will occasionally make a strange squealing noise after it has been turned off - no idea what that is, or what causes it. As a salesperson who spends many, many hours in her car, this vehicle has become a constant danger to both my livelihood and my life. I am afraid to drive it and I will not let family members drive it as I am afraid for their lives due to the issues stated above.
I can't drive the vehicle safe with the entire gauge cluster indicators are all on. Cluster making loud beeps and noises not being able to shut or clear the code indicators. The acura dealership is saying the camera is overheating and not safe to drive.
back-up camera is useless at night posing a hazard to anyone behind the vehicle. Honda knows how to fix the problem as witnessed by my 2018 Odyssey which is excellent. The problem has spanned over many years of the MDX before 2016 and after 2019. Having a working backup camera is paramount for any SUV because of the limited visability. Acura Service could not remove the problem
2018 purchased a little more than a month ago as a certified used Acura. Twice now we have been overridden by the automatic forward collision detecting something in front when NOTHING was there. Once on the freeway went from 70mph to 15 quickly and almost got rear ended. Just now on city street car stopped in the middle of intersection while turning left and overrides driver pressing gas pedal in both cases. Makes us scared to drive suv further and we have turned off that feature to see if it still happens.
My vehicle has similar behaviors to the most recent investigation that is happening with the investigation of the Honda Accord and CRV noted in this article: On a handful of times while driving on the freeway, my car has unexpectedly decelerated when passing another vehicle, or on a curve the adaptive cruise control slows the vehicle down. On one occasion, the car suddenly applied the brakes and slowed us down at least 10mph. In any of these instances, I have not had anyone following, but could have caused issues if there was.
Merging onto a 6 lane highway, specifically the 3 northbound lanes, the collision mitigation braking system activated suddenly. I was moving from the right lane to the middle lane accelerating as needed to maintain the appropriate speed with the middle lane. As I began to ease off the accelerator, the cmbs slammed on the brakes. Speed went from 60 to 25mph on a congested highway at rush hour. The car behind me swerved to avoid. I frantically stomped on the gas pedal to try to keep going, eventually the car stopped braking and I continued. The car in front of me was a few hundred feet away and not braking at the time this happened. Time of day was just before sunrise.
After switching to drive from reverse the nav display would not switch back from the back up camera while driving ahead, when a car would be anywhere near mine on the road, still in drive, whether idle at a stop light or in motion on the street, the back up sensors that respond to passing cars did not beep. I tried pressing the back button, nav button, settings button & turning the car on/off all failing to fix the problem. The camera remained on even while in park once I arrived home.
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