Land Rover Defender 2020–2023 — technical service bulletin
Bulletin Defender_N869_17JAN25 · NHTSA communication 11013966 · issued Jan 17, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2020–2023
model years
4
vehicle entries
Official summary
These vehicles have now been stopped from further SOTA attempts and require a wired intervention. A software update to the TCU and GWM is required.
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.