Land Rover Defender 2020 — technical service bulletin
Bulletin SSM75174ATT · NHTSA communication 10185370 · issued Dec 7, 2020
Technical service bulletin
communication type
Equipment
component
2020
model years
1
vehicle entries
Official summary
Rear muffler discoloured appears burnt-dull metal colour.
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.