Audi Q7: Heating, Ventilation & Air Conditioning

 Humidity Sensor in Fresh Air Intake Duct -G657-/ Air Quality Sensor -G238-, Removing and Installing

Air Quality Sensor -G238- with the Humidity Sensor In Fresh Air Intake Duct -G657-, Removing and Installing   Note There are different versions of the Air Quality Sensor -G238-/ Humidity Sensor in Fresh Air Intake Duct -G657--A-. Therefore, ensure the correct allocation. Refer to the Part

 CAN-Bus Terminal Resistance, Checking

General Description The Engine Control Module -J623- communicates with other CAN-Bus capable control modules. The control modules are connected by two data bus wires which are twisted together (CAN_High and CAN_Low), and exchange information (messages). Missing information on the CAN-bus is reco