2018 Acura MDX electrical problems

Filed Oct 6, 2026 · Electrical · 277,000 miles · IL

Odometer Fraud. The contact purchased a 2018 Acura MDX on August 26, 2026. While registering the vehicle, the contact was informed that the previous title indicated that the odometer was reported at 277,000. The vehicle was a private sale. At the time of purchase, the mileage was 77,000.

Filed Jul 10, 2026 · Electrical, Engine · HI

Transmission failed and light appeared. Speed reduced from 30 to 15. Acura stated they had to reset computer system and claimed when they started the car no lights shown and was able to reverse car. I was unable to reverse car, struggled and tugged feeling in the car. This is the 2nd time and they always repeat same solution no lights appeared and to reset system.

Filed Apr 9, 2026 · Brakes, Electrical · 225,802 miles · MA

Odometer Fraud. The contact purchased a 2018 Acura MDX. It was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the mileage was 85,000. The contact stated that on the day of the purchase; after refueling the vehicle and then attempting to pull out of the gas station, the Emissions, check engine, and parking brake warning lights illuminated on the instrument panel. The contact took the vehicle to an auto repair shop, and had the vehicle scanned and then diagnosed, DTC: P0158 (Oxygen sensor Circuit High Voltage, DTC Severity 2 of 3, T0159 Oxygen sensor Circuit Slow Response (Bank2 and Sensor 2), and an Electric Parking Brake Failure were displayed. The scan indicated that the vehicle was subjected to odometer fraud. The contact reviewed the paperwork and received it at the time of sale and became aware that the mileage stickers, along with other indications that the documentations were false. The contact retrieved a Carfax Report and discovered that the actual mileage was 225,802. The contact reported the odometer fraud to the Police Department and was informed that the dealer was known for odometer fraud. The Police also informed the contact that there was a case and a warrant already issued.

Filed Mar 19, 2026 · Electrical, Engine · GA

I was merging into traffic on interstate. The car lagged as if it wasn't getting gas. I pulled over to get out of traffic. Scary situation. Please advise!

Filed Mar 15, 2026 · Brakes, Electrical · OH

Hello, My 2018 Acura MDX has moisture and water inside the inner tailgate (trunk) tail light assembly, which caused the light to stop working. I understand there is a recall affecting some 2014–2020 Acura MDX vehicles related to moisture entering the tailgate light assembly, and my vehicle appears to have the same issue. Recall link: [XXX] Last week I visited the Acura dealership(Acura Columbus) in Dublin, OH for a fuel pump recall service. During that visit, the technician also noticed the water inside the inner tail light but quoted about $750 for the repair. Although my VIN does not show this recall, my vehicle is experiencing the same problem described. Could you please review and advise if this may qualify for recall coverage or goodwill assistance? Thank you. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 1, 2026 · Brakes, Electrical · NY

The Electric Parking brake system continuously fails (every 3-4 months)

Filed Oct 17, 2025 · Driver assistance, Electrical · IL

The front camera failure. Needs replacement. Camera apparently is used for the ACC , lane departure assistance.

Filed Aug 22, 2025 · Electrical · 47,000 miles · OR

The contact owns a 2018 Acura MDX. The contact stated that the vehicle was designed with the engine Auto Start-Stop feature. The contact stated that while at a complete stop and releasing the brake pedal, the engine failed to restart. The contact attempted to restart the vehicle, but the vehicle failed to restart. The contact then noticed that the gear shift indicator displayed that the transmission was in neutral(N). The contact shifted to park(P) and was able to restart the vehicle after several attempts. The contact stated that the failure had been recurring, almost causing the vehicle to be rear-ended. There was no warning light illuminated. The dealer was notified of the failure and recommended a diagnostic testing to determine the cause of the failure, but the contact declined due to the cost. The contact stated that the starter was previously replaced under an unknown recall, which the contact related to the failure. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 47,000.

Filed Jul 20, 2025 · Electrical · SC

The car alarm started going off randomly after the car was locked and armed. This would happen periodically. The car was locked using the indoor lock and then left unlocked and the lights would go off and on periodically. The internal dash periodically would flicker off and on (dash lights/screens). The car eventually drained the battery one night cycling down to 4.25v and had to be replaced (it was too damaged to be jumped). Upon replacing the battery codes were read, cleared and the car driven. The alarm and light issue came back, and the hood latch was disconnected. This stopped the alarm, but after rain events or humid days the lights would still come on (as if someone unlocked the car or walked up with the key) and the dash lights would occasionally flicker. The wireless control unit was removed and inspected and dendritic growth was noticed on one location of the board. This was cleaned with alcohol and this has appeared to solve the issue so far. The part of the board with the growth is not sealed and looks like it is right on the edge of the factory sealing.

Filed Apr 25, 2025 · Driver assistance, Electrical · MS

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.