Audi Q7 Owners & Service Manuals

Audi Q7: Description and Operation

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 On Board Diagnostic Systems

On Board Diagnostics, or OBD, is an automotive term referring to a vehicle's self-diagnostic and reporting capability. OBD systems give the vehicle owner or repair technician access to the status o

 Electronic Throttle Control (ETC) System

The electronic throttle control (ETC) system consists of the accelerator-pedal module, the engine control module (ECM), and the electronic throttle body. The electronic throttle body mainly consist

 Ignition and Timing

Ignition A spark ignition (SI) engine requires a spark to initiate combustion in the combustion chamber. Voltage is supplied to the spark plug where the electricity will arc across a gap at a volta

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 Camshaft Position Sensor - G40-, Checking

General Description Using the signal from the Camshaft Position Sensor -G40-, the precise position of the camshaft relative to the crankshaft is determined very quickly when the engine is started. Used in combination with the signal from the Engine Speed Sensor -G28-, the signal from the Camshaf

 Tires, Changing

The valve insert must be replaced with every tire change. Metal valve and wheel electronics can be reused. - Let air out of tire by removing the valve insert.   Note Be careful not to scratch off the glued- on wheel trim on these rims. The surface of the wheel trim is very sensitive.

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