Audi Q7: Heating, Ventilation & Air Conditioning

 Type Labels

The type label for refrigerant and filling capacities is located on the hood. 1 - Refrigerant oil identification (here PAG oil) and additional information. Refer to →Fluid Capacity Tables; Rep. Gr.03. 2 - Refrigerant identification, such as R134a 3 - Refriger

 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