Land Rover Defender 2021–2023 — technical service bulletin
Bulletin N918 - 01OCT24 · NHTSA communication 11010181 · issued Oct 1, 2024
Technical service bulletin
communication type
Power Train
component
2021–2023
model years
3
vehicle entries
Official summary
Gasoline Catalytic Converter Malfunction Indicator Lamp (MIL)
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.