Land Rover LR4 2014–2016 — technical service bulletin
Bulletin LTB00858NAS1 · NHTSA communication 10105924 · issued Nov 9, 2015
Technical service bulletin
communication type
Equipment
component
2014–2016
model years
3
vehicle entries
Official summary
"situation: a high-pitched 'whistle' noise may be evident from the instrument panel area when the climate control system is in use and engine speed is between 2,000 and 3,000 rpm. Cause: this may be caused by a resonance within climate control system air conditioning (a/c) pipes."
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.