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Service bulletins for the 2019 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.

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

By type

By component

By trouble code

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
BPaS110520189012018-12-03. Service bulletin. ELECTRICAL SYSTEM. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2019 RDXs with a client complaint of the horn inoperative when pressed or the panic button is used. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BPaS111320189012018-11-30. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:HORN. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2019 RDXs with a client complaint of the horn inoperative when pressed or the panic button is used. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
BER18100B2018-11-13. Service bulletin. ELECTRICAL SYSTEM:HORN; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE. Engineering request for information - American Honda Motor Co., Inc. (AHM) is investigating certain 2019 RDXs with a client complaint of the horn inoperative when pressed or the panic button is used. To fully understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind.
BPaS101720189032018-10-29. Service bulletin. ELECTRICAL SYSTEM:HORN. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2019 RDXs with a client complaint of the horn inoperative when pressed or the panic button is used. To fully understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
B18100B2018-10-15. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. Service news article - Troubleshooting an audio system that's stopped working and/or has a blank audio/information screen? You may have noticed the service information is a bit lean on how to troubleshoot the media-oriented systems transport (MOST) network using electrical control line (ECL) diagnosis. Until we can revise the service information, here's some important info on how to access the ECL diagnostic screen and interpret the data.
B18-0452018-10-01. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Service bulletin - Some troubleshooting procedures for a loss of communication or F-CAN malfunction DTC?s require running the F-CAN Bus Connected Unit Check using the i-HDS. There are certain control units that may be reported as Not Available in the Status column even though they are properly communicating.
BPaS072720189022018-08-20. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2019 RDXs with a client complaint of a no-start condition that requires the 12V battery to be replaced. To fully understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.

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