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Electrical systemPart report

2018 Acura RDX Electrical system Problems

Complaints
8about this part
Share
10%of 78 total for the year
Median mileage
3,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 8 complaints about the electrical system of the 2018 Acura RDX, 10% of the 78 complaints for this model year. Where a mileage was given, the median is 3,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“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 complaint #11615565, filed 2024-09

“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. …”

NHTSA complaint #11746062, filed 2026-06

“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. …”

NHTSA complaint #11706350, filed 2025-12

“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 complaint #11515283, filed 2023-04

“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. …”

NHTSA complaint #11529033, filed 2023-06

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2025517%
202418%
2023729%
202213%
2021109%
2020278%
2019399%
2018810%
20171823%
2016820%
201582%
201483%
201374%
2012213%
2011319%
201029%
200839%
2007611%

Other parts of the 2018 Acura RDX

Fuel system
34 complaintsTransmission and drivetrain
13 complaintsEngine
11 complaintsOther or unknown
8 complaintsVehicle speed control
7 complaintsBrakes
4 complaintsForward collision avoidance
4 complaintsAir bags
3 complaintsLane departure
3 complaintsBody and structure
3 complaintsExterior lighting
2 complaintsSeats
2 complaints

← All problems reported for the 2018 Acura RDX

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology