Land Rover Defender 2023 — technical service bulletin
Bulletin SSM75999 · NHTSA communication 10237553 · issued May 31, 2023
Technical service bulletin
communication type
Equipment
component
2023
model years
7
vehicle entries
Official summary
Startup Battery Reduced State of Charge (SOC)
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.