2018 Acura RDX Electrical Problems

The transmission went into limp mode one day after coming to a stop. When I safely got home, I turned the car off. Upon restarting, the issue was gone, but this has now happened several times. Each time, putting the car into park, shutting it off, and restarting it "resets" whatever was going on. Eventually the CE light came on, got the code, and it came back as P0873. The CE light was off after once again shutting the engine off and then restarting. I've purchased the necessary materials to complete the repair, but I've read on many forums this is a common issue, with some even reporting it recurring even after replacing the pressure switch. Acura should issue a recall and absolve all consumers of costs incurred. URLs provided below from Reddit threads and an Acura discussion forum regarding similar issues all over. [XXX] [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11746062

Incident

Jun 17, 2026

My car's original security alarm goes off randomly without any reason. When parked and locked in a parking lot next to a street, the alarm goes off intermittently. After unlocking using FOB, the alarm will turn off and then goes off again in a few minutes. This will go on for hours at a time until it stops for a few days and then reoccurs again! Very stressful and frustrating. The mechanic says it's caused by faulty Body Control Module and will cost over $1,000 to fix. I see that many people are having the same issue and have to pay over $1,000 to repair. This faulty reequipment should be recalled so owners can recoup their damage.

NHTSA ID

11706350

Incident

Dec 18, 2025

The car hesitates to start and while driving jerks at around 20mph. This happened a few times in the last year. When taken to dealer, because they could not reproduce incident, said it can’t be diagnosed. I told them it jerks when accelerating at around 20mph and keeps doing it every time I have to stop at light and go again.

NHTSA ID

11615565

Incident

Sep 12, 2024

The contact owns a 2018 Acura RDX. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that several attempts were needed to start the vehicle. In addition, the console features were inoperable. The contact stated that the failure was intermittent. The vehicle was taken to an independent mechanic and the contact was advised to take the vehicle to the dealer. The dealer was made aware of the failure but confirmed that parts were not yet available. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was unknown. VIN tool confirms parts not available.

NHTSA ID

11579709

Incident

Dec 27, 2023

Vehicle began hesitating when starting, but not all of the time. One day after refueling it would not start. Lights on the dashboard flashed and flickered and the keyless start button made a clicking sound, but the vehicle would not start. Vehicle was towed to the nearest mechanic. The next morning the mechanic started the vehicle and found nothing wrong. Mechanic kept the vehicle for a couple days and the problem reoccurred. Vehicle will not start. Computer diagnostics shows the 2018 Acura RDX Control Unit part number 38320-TX4-A31 is faulty. This part is backordered and likely will not be available in the near future. The intermittent starting failure poses a safety risk and could leave a driver stranded.

NHTSA ID

11529033

Incident

Jun 6, 2023

The vehicles adaptive cruise control is unreliable. Guidance system goes haywire and cannot stay on track to destination. Carplay becomes inoperable. Have had Tameron Eastern Shore Honda who sold car to me check problem on multiple occasions and they cannot find problem.

NHTSA ID

11515283

Incident

Feb 1, 2023

The car kept stalling while I was trying to accelerate on the highway. I pulled over and turned it off and the problem resolved itself

NHTSA ID

11460877

Incident

Apr 14, 2022

TL* THE CONTACT OWNS A 2018 ACURA RDX. WHILE THE VEHICLE WAS PARKED, RODENTS ENTERED THE ENGINE COMPARTMENT AND CHEWED ON THE BATTERY CABLE AND SEVERAL WIRING HARNESSES LOCATED UNDER THE HOOD OF THE VEHICLE. THE VEHICLE WAS TAKEN TO ACURA OF OCEAN (909 NJ-35, OCEAN TOWNSHIP, NJ 07712, (732) 776-5200) WHERE IT WAS DIAGNOSED THAT THE AFFECTED WIRES NEEDED TO BE REPLACED. THE VEHICLE WAS CURRENTLY BEING REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 3,000.

NHTSA ID

11083108

Incident

Mar 26, 2018

Mileage

3,000 mi