Land Rover Defender 2020–2022 — technical service bulletin
Bulletin Defender_N811_18AUG25 · NHTSA communication 11022582 · issued Aug 18, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2020–2022
model years
3
vehicle entries
Official summary
Door Zone Module - Quiescent Drain
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.