Land Rover Defender 2021–2026 — technical service bulletin
Bulletin SSM76448 - 21APR26 · NHTSA communication 11032359 · issued Apr 21, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2021–2026
model years
6
vehicle entries
Official summary
Air Conditioning (AC) Inoperative.
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.