Land Rover Discovery 2018 — technical service bulletin
Bulletin SSM74052 · NHTSA communication 10145970 · issued Aug 28, 2018
Technical service bulletin
communication type
Electrical System
component
2018
model years
4
vehicle entries
Official summary
"SOS Limited Availability" warning is displayed on Instrumental Cluster. Issue is Caused due the TCU (Telematics Cobntrol Unit) not receiving Global Positioning System (GPS) message within a specified time frame.
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.