Land Rover Defender 2020 — technical service bulletin
Bulletin JLRTB02061NAS1 · NHTSA communication 10186711 · issued Jan 6, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2020
model years
1
vehicle entries
Official summary
The amber 'Low Coolant' warning message is displayed on the Instrument Panel Cluster(IPC). Further investigation has found no engine coolant leaks and the engine coolantexpansion tank is filled to the correct level.
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.