Land Rover Defender 2023–2026 — technical service bulletin
Bulletin SSM76457 - 21MAY26 · NHTSA communication 11033267 · issued May 21, 2026
Technical service bulletin
communication type
Power Train
component
2023–2026
model years
7
vehicle entries
Official summary
Amber MIL being displayed on the Instrument Panel Cluster on vehicles equipped with a Gen4 transmission.
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.