Acura RLX Repair and Maintenance
A guide to problems, costs, maintenance and repair for your Acura RLX
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Acura RLX ProblemsCheck Engine Light for Running Rough and Difficulty Starting
The exhaust recirculation valve (EGR) on the 2014-2017 Acura RLX may fail, causing:
The EGR valve has open and closed positions, and opens or closes on command from the computer.
Exhaust gases constantly pass through the valve when it is open, leaving carbon deposits on the valve. These carbon deposits may lead the the valve sticking in the open or closed position.
To correct this issue, sometimes it is sufficient to clean the valve, but replacement is recommended in all cases.
For further information on your vehicle's issue, try out our diagnostics tool here.
The 2014-2017 Acura RLX may have problems with the EVAP canister vent solenoid. It stops responding to commands to open and close, and the following occurs:
The valve is located on the charcoal canister, and is meant to open and close upon command. It fails due to corrosion breaking one of two internal seals, which allows air to escape the system, signaling the OBD trouble code P1457.
Correcting the problem can be done by replacing the vent valve, or, in some cases, cleaning and resealing the vent valve has been successful. You can get an estimate for this repair here.
A worn, missing, or loose gas cap can cause the same issues.
The 2014-2017 Acura RLX may develop issues with the automatic transmission.
Rough shifting may occur, and the “D4” light and check engine may begin to blink. The check engine light will also illuminate, and OBD trouble codes P0700, P0730, P0740, P0780, P1768 and/or P1768 will be stored in the computer.
If the transmission shifts roughly, the failure is very likely mechanical failure of the transmission. If the transmission performs normally, a faulty sensor, or dirty transmission fluid may be the case.
In most cases, it is necessary to use professional diagnostic equipment to provide a diagnosis, and complete the repair.
The longevity of the transmission is dependent on strict adherence to the manufacturer's recommendation for ATF replacement intervals and procedure.
Acura RLX Questions2014 acura rdx makes a one time beep sound after start driving. Anyone know why? (2 answers)
Just bought the car a couple of weeks ago. The beep sound started today. Don't want to have to take it to the dealership if it is an easy fix. Thx for any input.
This is an RDX. ( Model choices did not include the RDX)
Acura RLX RecallsBrakes May Unexpectedly Apply
The Collision Mitigation Braking System (CMBS) may falsely activate the brake system. This can cause loss of vehicle control. Dealers will update the CMBS software free of charge to correct the problem.
The headlight assembly has an aluminum film applied to the inner reflector. This film my not stick to the reflector as intended causing the film to delaminate. Headlight output can diminish as a result, increasing the risk of a crash. Dealers will replace both headlight assemblies on affected vehicles to correct this concern.
Colder temperatures limit the seat belt mechanism from retracting and extending fully. In addition to maintaining ease of operation when extending a seat belt, proper seat belt retraction creates the necessary tension across a seated passenger, and is a critical to restraint and safety in a crash. Dealers will front replace seat belts to correct this concern.