Land Rover Defender 2019–2020 — technical service bulletin
Bulletin SFCC_OCT2020_36 · NHTSA communication 10182346 · issued Oct 9, 2020
Technical service bulletin
communication type
Equipment
component
2019–2020
model years
5
vehicle entries
Official summary
The engine speed will jump up at idle with the AC off.
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.