Brake system, Cruise control, lane keeping system get malfunction erratically (ever since 2022, and has been like this), and one of the two sets of brakes never wears off (More than 100 K mileage now (Oct. 2026) , one set of brake pads still is still have sufficient life and does not seem to require replacement. Additiionally, recently (August 2026) the electronic system has gone very bad, the dashboard automatically restarts, headlight turns on, and trying to engaging something, then turned off automatically, then a new cycle starts, and even I turned off again, the cycle will restart until battery is drained and dead, if I do not lock the car (and I had to replace a new battery that was used for less than 1.5 year. If I lock the car, the car will start the same cycle and will honk, and honk, until the surrounding people had to remove the car.
Acura MDX headlights problems
46 of the 3,338 owner complaints about the Acura MDX describe headlights failing or too dim, most of them for the 2020 model year.
- owner complaints
- 46
- worst model year
- 2020
- typical repair cost reported
- $2,000
- typical mileage
- 72,000
By model year
Often reported together
Lane assist 13Adaptive cruise 13Collision warning 12Warning lights 4Battery drain 3Fire or smoke 2Won't start 1Wipers 1
Trouble codes mentioned
U3000 3
What owners say
LKAS, forward collision, high beam all alerts are going off and have been told it's a camera system that gets over heated. This is not a easy fix and needs to be recalled to clear up the codes and alerts.
Moisture accumulating within the driver side headlight is limiting illumination and safe night driving. Photos compare driver side to passenger side.
Multiple errors Lane departure and advanced driver support, ACC LKAS, auto high beam, and braking system. Looking into this more i see lots of people with the same issue failing front facing camera and not a cheap fix. Is there any current investigations into this problem or a software upgrade? I clear the errors and they come back once car is turned off and back on. If no fix to the current system there should be a way to disable LKAS and ACC without spending $2000 to replace the system.
The car has started with an auto high beam, lane assist, lane departure, crash mitigation, adaptive cruise lights coming on one after the other noting there are issues with the systems and they are disabled. Code is U3000 using a scanner noting Multipurpose Camera Unit Internal Electronic Failure. Sometimes the code will clear, and sometimes not. If it clears an entire drive cycle may be completed just fine, sometimes it pops back up before even moving the car and sometimes during the drive. This is a safety concern as these systems not working or stopping working mid drive and affect safety. The repair for this is not clear and a failure of a safety system should not be occurring on cars without an inmediate and covered fix. The average car on the road is over 12 years old so this failure is occurring on cars well newer than the average car and compromising safety of the driver and surrounding cars especially features intended to prevent crashes that drivers rely heavily on. The fact it can stop working mid drive is a huge hazard since one may be relying on a system and it suddenly fails (like adaptive cruise control) and cause a crash. Please investigate his widespread issue and please fix it.
The subject 2019 Acura MDX model includes the tech package which adds several safety features that function through a windshield mounted camara/radar. The system has malfunctioned and none of the safety features are working. The dash displays the following messages: Collision Mitigation System Problem Adaptive Cruise Control Problem Lane Keeping Asist Problem Road Departure Mitigation System Problem automatic headlight system problem At the bottom of the dash, I see Brake System, Crash Warning and Lane Departure lights on as well. Acura is charging $2,319 to replace this unit in addition to a $270 diagnostic fee. This issue is widely reported as a significant issue in several model years for the MDX and should be part of a safety recall. The Acura technician acknowledged this issue is common. I should add this is the second major electronic issue with this MDX within the last several months. The prior issue was multiple system failure warnings that Acura determined were caused by a faulty wiring harness at a $1,604 cost, plus a $255 diagnostic fee. Please note I am the original owner of the vehicle and it has never been in a collision. Additionally, the system has recently mistakenly activated the brakes at very low speed and warned against collisions with other vehicles traveling in the opposite direction while on a curve.
The car is giving external right head light issue. The light turns off suddenly at night which we need to turn on again after 2 minutes. This happens frequently and we have to turn on the lights very often. The dealer examined the issue and he expressed regret in repairing the vehicle and estimated price of $2.500.The Service Manager though stated that the issue is same as it pertains to the rear lighting issue for Acura 2014 to 2020 Models. We paid $100 just to examine the lighting issue to the dealer. We are senior citizens at advanced stage and it is becoming increasingly difficult to take out the cars at evenings for fear of proper and reliable lighting in the car.
My cruise control, automatic lane changing indicator light indicator, brake indicator light, high beam light indicator lights all keep coming off and on. Researching it on YouTube states that it’s the camera on my windshield getting too hot and it’s a known issue. It’s $1800 To fix but others have stated they get fixed and it doesn’t resolve the problem. Asking for your help.
Faulty forward facing camera affixed internally on windshield. Adaptive Cruise Control will not function. Lane Keeping Assist will not function. Collision Mitigation Braking may be unavailable. Vehicle detects oncoming traffic in opposing lane as a potential collision, causing braking system to engage and causing a risk of a collision or being struck from the rear despite no vehicle ahead except on the opposite side of the road. Acura can not find anything wrong with the vehicle. Recently all warning lights for high beams, braking system, LKAS, road departure, front end collision, etc flash on vehicle. Multiple people with Acura and Honda vehicles have reported the same issue with the front windshield sensor camera, yet no recall, instead they have paid thousands to replace a faulty camera system. Acura quoted $2000 for replacement of camera. Vehicle operationally runs fine. Why has nothing been done despite numerous, repetitive issues with this safety hazard?
While driving the car, several warning lights turned on all at once, saying that the following components were disabled: Lane Keep Assist, Adaptive Cruise Control, Automatic High Beams, and Collision Mitigation Braking System. Not being able to use these features is more dangerous, not to mention that the warning lights associated with their disabling are distracting (making it likely that, if a more serious warning was flashing, it would not be noticed by the driver) and cannot be turned off without an expensive replacement. Yes, the problem was confirmed by a trusted mechanic (the warning lights will not turn off so it's not hard to confirm), who indicated that the radar camera needed to be replaced. No, the component has not been inspected by others. There was no warning of the problem.
Related recalls
Interior lighting
- What is wrong
- Honda (American Honda Motor Co.) is recalling certain 2014-2020 Acura MDX vehicles. Moisture may enter the tailgate lid light assembly and wiring harness, which can cause the interior and exterior lights to fail, including the lid lights, position lights, license plate lights and taillights.
- Risk
- Vehicle lights that fail to illuminate can decrease visibility and increase the risk of a crash.
- Remedy
- Dealers will inspect the wiring and install a fuse harness, replace the lid light, and repair the body dust sealer, as necessary, free of charge. Owner notification letters were mailed May 30, 2025. Owners may contact Acura's customer service at 1‑800‑382‑2238. Acura's number for this recall is FLI. Vehicles included in this recall that were previously repaired under the federal safety agency recall number 19V‑256 will need to have the new remedy completed.
Recall number 25V259000 · Recall details
Exterior lighting
- What is wrong
- Honda (American Honda Motor Co.) is recalling certain 2014-2019 Acura MDX and 2017-2019 Acura MDX Sport Hybrid vehicles. Moisture may enter the tailgate lid lights, possibly causing a loss of the tailgate lid lights and the taillights.
- Risk
- Loss of the taillights reduces the vehicle's visibility, increasing the risk of crash.
- Remedy
- Acura will notify owners, and dealers will modify the tailgate lid lights and install updated gaskets and a wiring sub-harness or will replace both tailgate lid lights. The repairs will be performed free of charge. The recall began May 7, 2019. Owners may contact Acura customer service at 1‑888‑234‑2138. Acura's number for this recall is M49.
Recall number 19V256000 · Recall details
Questions about the Acura MDX headlights
Which Acura MDX years have headlights failing or too dim problems?
The model years with the most reports are 2020 (9 complaints), 2018 (6 complaints) and 2017 (5 complaints).
How much does it cost to fix headlights failing or too dim on the Acura MDX?
Owners who mentioned a price put the repair at about $2,000 (median of 10 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
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