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Service bulletins for the 2021 Acura RDX

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

194 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Driver assistance are shown. Show all

Bulletins, newest first
BPaS090720219022021-09-16. Service bulletin. ELECTRICAL SYSTEM:ADAS:HUD:SOFTWARE; VISIBILITY; ELECTRICAL SYSTEM:ADAS:HUD:CAMERA/SENSOR; ELECTRICAL SYSTEM:ADAS:HUD:PROJECTOR. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2021 RDXs with a client complaint of a rattle noise coming from the Head-Up Display (HUD). To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
B21080A2021-09-02. Service bulletin. FORWARD COLLISION AVOIDANCE. ServiceNews Article - When returning the vehicle to the client, inform them that if the message Adaptive Cruise Control System Problem comes back on when the vehicle is driven in freezing conditions, it is likely because of snow or ice buildup on the radar. Advise the client of the following procedure to clean the front grille where the radar is located.
B21-0272021-09-02. Service bulletin. FORWARD COLLISION AVOIDANCE. Service Bulletin - The ACC system error message comes on while driving when outside temperatures are low/near freezing.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.