BMW X3 Service & Repair Manual: Removing and installing or replacing complete independent heater with bracket

BMW X3 Service & Repair Manual / HVAC / Auxiliary. heater with control elements / Removing and installing or replacing complete independent heater with bracket

WARNING: Risk of burning! Work on auxiliary heater may only be carried out when it has cooled down.

NOTE: CLAMP OFF coolant hoses on independent heater.

Recycling

Fuel escapes when fuel lines are detached. Have a suitable collecting vessel ready.

Catch and dispose of escaping fuel.

Observe country-specific waste disposal regulations.

Necessary preliminary tasks:

  • Remove LEFT WHEEL ARCH COVER

Removal:

Unclip intake silencer in marked area (2).

Release screws (2).

Disconnect fuel line (3).

Unlock connector (4) and disconnect.

HVAC

Release screws (1).

Unclip the fuel line (2).

Detach the holder (3).

HVAC

Cut open cable straps (1).

Unlock and disconnect connector (2).

HVAC

IMPORTANT: Secure auxiliary heater (2) against falling off/down!

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

Remove auxiliary heater (2).

HVAC

Replacement:

Release spring band clamp (1).

Release screws (2).

Slacken clamp (3) and pull off exhaust hose.

Take off holder (4).

HVAC

Unlock and disconnect connector (1).

Pull off air intake hose (2).

HVAC

Release screws (1).

Remove holder (2) from auxiliary heater (3).

HVAC

Installation:

Position auxiliary heater (2) correctly.

Attach coolant hoses and secure by spring band clamps (1).

HVAC

Connect connector (2).

Replace and secure cable straps (1).

HVAC

Position the holder (3) correctly.

Tighten down the screws (1).

Clip in the fuel line (2).

HVAC

Tighten screws (2).

Connect fuel line (3).

Connect the connector (4).

Clip in intake silencer in marked area (2).

HVAC

Required reworking:

  • Install LEFT WHEEL ARCH COVER
  • Fill and vent cooling system and check for leaks.
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