Land Rover Defender 2021–2025 — technical service bulletin
Bulletin D006 Defender 20MAR26 · NHTSA communication 11031070 · issued Mar 20, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2021–2025
model years
5
vehicle entries
Official summary
The transfer case clutch and / or All Wheel Drive (AWD) lock cannot perform as designed.
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.