Audi AMB Service Manual page 539

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Drain coolant --> Cooling system, draining and filling.

Remove coolant hose couplers from top and bottom of radiator.

Fig. 275: Removing Air Ducts On Left/Right Of Radiator
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Remove air ducts on left and right of radiator - arrows -.

Fig. 276: Disconnecting Connector From A/C Pressure Switch F129 & Ambient Temperature Sensor
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Disconnect connector - 1 - from A/C pressure switch F129.

Disconnect connector - 2 - from ambient temperature sensor.

Move both wires clear.

CAUTION: Air conditioner refrigerant circuit must not be opened.
2005 Audi A4 Quattro
2:36:19 AM Page 10