Audi Q7: Rear Final Drive, Differential

 Knock Sensor 1 - G61-, Checking

General Description The Knock Sensor 1 -G61- is a tuned accelerometer on the engine which converts engine vibration to an electrical signal. The Engine Control Module -J623- uses this signal to determine the presence of engine knock and to retard spark timing, if necessary. Special tools and wor

 Fender, Removing and Installing

Removing - Remove the drip rail. Refer to → Chapter "Drip Rail, Removing and Installing". - Remove the bolt -1-. - Open the front door. - Remove the bolt -2-. - Remove the rear cover for the fender. Refer to → Chapter "Rear Fender Cover, Removing and Installin