Audi A4 2020 — technical service bulletin
Bulletin TSB_2078437_1 · NHTSA communication 11021464 · issued Jul 1, 2025
Technical service bulletin
communication type
Electrical System
component
2020
model years
9
vehicle entries
Official summary
This bulletin provides information when the MIB3 restarts by itself, or fails.
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.