Acura RDX 2019–2020 — technical service bulletin
Bulletin ONLF9O04222021 · NHTSA communication 10190998 · issued Apr 22, 2021
Technical service bulletin
communication type
Electrical System
component
2019–2020
model years
2
vehicle entries
Official summary
"Owner Notification Letter - On some 2019 RDX models, a loose connection in the MOST bus network may cause the following: - A popping or crackling from the speakers, a blank display, or no sound from the audio system - Network Loss and/or Drive Mode Not Available Messages or the disclaimer message stuck on - The center display staying on after turning the vehicle to the OFF mode with the door open - Display switches between the Day Mode and Night Mode On some 2020 RDX models, a loose connection in the MOST bus network may cause the following: - A popping or crackling from the speakers, a blank
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.