Land Rover Defender 2022–2025 — technical service bulletin
Bulletin SSM76279 · NHTSA communication 11015352 · issued Feb 21, 2025
Technical service bulletin
communication type
Engine
component
2022–2025
model years
8
vehicle entries
Official summary
Cylinder Head Carbon Build-Up _ Valve-Coking
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.