Audi Q7: Starting and driving

 General, Technical data

Safety Precautions Safety Precautions when Working on Fuel System There is a risk of injury due to the fuel being under pressure. The fuel system is under pressure. Injuries are possible from fuel spraying out. Before opening the fuel system: - Wear protective eyewear. - Wear safety glov

 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