Audi Q7: Fuel Supply - Gasoline Engines

 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

 When driving

Starting to drive, stopping, and parking Starting from a stop Press and hold the brake pedal. Start the engine. Select "D" or "R". Release the parking brake. Release the brake pedal. The vehicle may roll. Press the accelerator pedal to accelerate. Securing the vehicle against rolling Secure