Land Rover Defender 2019–2023 — technical service bulletin
Bulletin SSM75898 · NHTSA communication 10231448 · issued Jan 27, 2023
Technical service bulletin
communication type
Suspension
component
2019–2023
model years
6
vehicle entries
Official summary
Rear Differential e-Diff - Knock Noise or Judder/Vibration
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.