Heater Core: Service and Repair

64 11 207 - Replacing heater core





Warning!
Follow instructions for working on cooling system Instructions For Working on Cooling System!





Necessary preliminary tasks:
- Draining coolant Service and Repair
- Remove battery compartment Removing and Installing/Replacing Battery Container (R50) or
remove air filter housing Service and Repair (R53 / R50 diesel).
- Remove left storage compartment 51 16 392 - Removing and installing/replacing storage compartment in instrument panel trim (driver's side) or
panel for pedal assembly





Release spring clamps (2) and detach coolant hoses (1).

Important!
Carefully blow through aluminum twin pipe to remove remaining coolant from heat exchanger for heating system.

Installation Note:
Vent cooling system and check for leaks.





Release screws (1).
Remove cover (2).





Release screws (1).
Release clamps (2).
Remove heater (3).

Installation Note:
Make sure heater (3) is correctly seated.
Replace sealing rings.
Coat new sealing rings with antiseize agent.
Make sure sealing rings and clamps (2) are correctly seated.