RAM 2500 2020–2021 — technical service bulletin
Bulletin 0805221 · NHTSA communication 10220983 · issued Mar 26, 2021
Technical service bulletin
communication type
Equipment
component
2020–2021
model years
8
vehicle entries
Official summary
Flash: Radio Frequency Hub Module (RF-HUB) Updates This bulletin involves reprogramming the RF-HUB with the latest software available. The customer may experience the following:The key fob won't unlock the doors while the vehicle is running and after a remote start.
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.