Nissan Sentra 2021 — technical service bulletin
Bulletin PM991 2021 Sentr · NHTSA communication 10200026 · issued Jul 27, 2021
Technical service bulletin
communication type
Electrical System
component
2021
model years
1
vehicle entries
Official summary
Audio Control Unit Reprogram Voluntary Service Campaign Dealer Announcement: Nissan has reclassified the previously announced quality action (PM984) for new vehicle inventory as a Voluntary Service Campaign to reprogram the Audio Control Unit on 17,171 specific 2021 Sentra vehicles identified in Service Comm and DBS National Service History. Due to a program logic concern, certain vehicles may have been manufactured with an Alliance In-Vehicle Infotainment (AIVI) system software that allows the AIVI system to continue drawing current after the vehicle is shut off. This event may occur when the
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.