Toyota 4RUNNER 2010–2013 — technical service bulletin
Bulletin T-SB-0040-12 Rev · NHTSA communication 10132763 · issued Jun 13, 2014
Technical service bulletin
communication type
Back Over Prevention
component
2010–2013
model years
4
vehicle entries
Official summary
TSB: Some 4WD equipped 2010 ? 2013 model year SR5 and Trail grade 4Runner vehicles may exhibit a clunk/thunk noise from the rear of the vehicle or a ?bump-from-behind? sensation just before a stop or when accelerating from a stop. Improvements have been implemented on the rear propeller shaft (driveshaft) to reduce this condition. Follow the Repair Procedure in this bulletin to improve this condition.
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.