Some 2007 ? 2013 model year FJ Cruiser vehicles equipped with automatic transmission and 4WD 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. Utilize the following Repair Procedure to address this condition.