Land Rover LR4 2010–2012 — technical service bulletin
Bulletin LTB00474NAS3 · NHTSA communication 10104461 · issued May 19, 2015
Technical service bulletin
communication type
Engine
component
2010–2012
model years
9
vehicle entries
Official summary
"situation: a rattle / click noise may be heard from the front of the engine. The noise may be more pronounced when the engine is at idle speed. Cause: this may be caused by wear on the timing chain lever, resulting in reduced tension on the timing chain."
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.