Land Rover Discovery 2014–2017 — technical service bulletin
Bulletin SSM73446 · NHTSA communication 10116992 · issued Jun 28, 2017
Technical service bulletin
communication type
Electrical System
component
2014–2017
model years
8
vehicle entries
Official summary
Issue: L538 & L550 vehicles 14MY Onwards with Active Driveline may exhibit a buzzing type noise from the driveline which may be more noticeable at low speeds ie - cornering. This may or may not be accompanied by a 4WD error message displayed on the Instrument cluster message centre.
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.