BMW X3 Service & Repair Manual: Replacing changeover valve for independent/auxiliary heating

WARNING: Risk of scalding! Only perform the following repair work on an engine that has cooled down.

NOTE: DISCONNECT coolant hoses from changeover valve for independent/auxiliary heater.

Necessary preliminary tasks:

• REMOVE FRONT LEFT WHEEL ARCH COVER

Removal:

Release screws (1).

Disconnect fuel line (2).

Release screws (1).

Unclip the fuel line (2).

Detach the holder (3).

IMPORTANT: Risk of damage! Observe coolant through flow direction, mark coolant hoses before removing.

NOTE: If necessary, catch escaping coolant.

Unlock and disconnect the connector (1).

Release hose clips (2) and detach coolant hoses (3).

Release screws (4).

Remove changeover valve for independent/auxiliary heating (5).

Installation:

Replacement:

Release screws (1).

Remove holder (2) from changeover valve for independent/auxiliary heating (3).

Position changeover valve for independent/auxiliary heating (5) correctly.

Tighten screws (4).

Attach coolant hoses (3) correctly and secure with spring band clamps (2).

Connect the connector (1).

Position the holder (3) correctly.

Tighten down the screws (1).

Clip in the fuel line (2).

Tighten down the screws (1).

Connect fuel line (2).

Required reworking:

• INSTALL FRONT LEFT WHEEL ARCH COVER
• Vent cooling system and check on watertightness.