Land Rover Defender 2019–2020 — technical service bulletin
Bulletin SSM75182ATT · NHTSA communication 10185389 · issued Dec 15, 2020
Technical service bulletin
communication type
Engine
component
2019–2020
model years
5
vehicle entries
Official summary
Engine Misfire, Rattle, Knock, lack of power.
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.