Land Rover LR4 2010 — technical service bulletin
Bulletin SSM45714 · NHTSA communication 10106023 · issued Jan 5, 2015
Technical service bulletin
communication type
Suspension
component
2010
model years
3
vehicle entries
Official summary
"re-issued dec 2015. Issue: unnecessary replacement of height sensors on 10 my vehicles. Information: the air suspension ride level module (rlm) and active dynamics suspension module b (sumb) ecu's include robust checks of the height sensors during vehicle usage. If there is a fault with the height sensor wiring harness, connector, or the height sensor component itself then the system ecu will store a height sensor related dtc."
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.