Audi Q7: Drivetrain

 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

 Replacing wheels

Preparation You must complete the preparation before changing a tire. Read and follow the important safety precautions. Set the parking brake. Select the "P" selector lever position. When towing a trailer: disconnect the trailer from your vehicle. Lay out the vehicle tool kit and the spare t