Audi Q7: Starting and driving

 Cooling system

Coolant The engine cooling system is filled with a mixture of purified water and coolant additive at the factory. This coolant must not be not changed. The coolant level is monitored using the indicator light. However, you should occasionally check the coolant level. Messages The following messag

 Flushing Circuit Block Diagrams

  Note The arrows in the following illustrations show the direction of refrigerant flow during flushing (refrigerant flows in opposite direction of flow when Air Conditioning (A/C) system is in operation while flushing, therefore the high pressure side of the A/C service system is connec