Land Rover Defender 2020–2022 — technical service bulletin
Bulletin Defender_N811_21MAR25 · NHTSA communication 11016688 · issued Mar 21, 2025
Technical service bulletin
communication type
Electrical System
component
2020–2022
model years
3
vehicle entries
Official summary
Customer could be left with a vehicle that can not be unlocked or the engine started as a result of a depleted battery State of Charge.
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.