Land Rover Range Rover 2016–2018 — technical service bulletin
Bulletin LTB01045NAS2 · NHTSA communication 10125244 · issued Sep 1, 2017
Technical service bulletin
communication type
Service Brakes
component
2016–2018
model years
3
vehicle entries
Official summary
Situation: One or more of the following issues may be present from the rear brake system: * A "roan", "drone", "honk", and/or "graunch" noise during light braking when reversing; most noticeable after an initial start in colder ambient temperatures * A high-pitched 'squeal' or 'squeak' noise during light braking at various speeds in both forward and reverse motion.
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.