Land Rover Defender 2020–2023 — technical service bulletin
Bulletin BIG5JUN22_26 · NHTSA communication 10215512 · issued Jun 21, 2022
Technical service bulletin
communication type
Exterior Lighting
component
2020–2023
model years
4
vehicle entries
Official summary
Front lamp unit software
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.