Part II

WARNING: This page is about a different car, the 2006 Audi A8, 2005 Audi A8, and 2004 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.

Part I → Part I

Fig 1: Connection Diagram For Coolant Hoses (With Auxiliary Heater) Part II

Courtesy of VOLKSWAGEN UNITED STATES, INC.

1 - Engine Coolant (EC) Switch-Off Valve (heater) N279

2 - Auxiliary heater

3 - Recirculation Pump V55

4 - Bleeder screw

In hose to pump-valve unit

5 - Heater core in air conditioner, right

Removing and installing → 87 - AIR CONDITIONING
Replace coolant after replacing

6 - Heater core in air conditioner, left

Removing and installing → 87 - AIR CONDITIONING
Replace coolant after replacing

7 - Pump valve unit

Removing and installing → 87 - AIR CONDITIONING

8 - Bleeder screw

In hose from pump-valve unit

9 - To rear coolant pipe

10 - From upper coolant hose