Land Rover Defender 2023 — technical service bulletin
Bulletin N763 UPS8522-1 · NHTSA communication 10227407 · issued Nov 28, 2022
Technical service bulletin
communication type
Engine and Engine Cooling
component
2023
model years
6
vehicle entries
Official summary
A concern has been identified on a small number of vehicles with a P6 engine, where one of the CAM carrierâ s holes hasnâ t been fully drilled. As a result, the oil channel could be blocked leading to an accumulation of oil against the pressure control valve rubber membrane.
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.