RAM 1500 2021 — technical service bulletin
Bulletin 0819222 · NHTSA communication 10227747 · issued Oct 15, 2022
Technical service bulletin
communication type
Power Train
component
2021
model years
1
vehicle entries
Official summary
Flash: Body Control Module (BCM) Updates This bulletin involves updating the BCM with the latest available software. Customer may experience one or more of the following condition: AUX switch ?recall last state? function does not work, only if equipped with a 6.2L Supercharged HEMI V8 SRT Engine (Sales Code ESD). AUX output always returns to OFF unless user selects battery power over ignition power feed, only if equipped (Sales Code ESD). Hill descent button is inoperative (Sales Code BNH).
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.