64 11 208 Replacing heater core (automatic A/C)

WARNING: This page is about a different car, the 2006 BMW X5, 2005 BMW X5, and 2004 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Remove heater bulkhead. See REMOVING AND INSTALLING/REPLACING HEATER BULKHEAD .

WARNING:

Danger of scalding!

Only perform this work after engine has cooled down.

Release hose clamps (1).

Detach water hoses (2) from flange (3). Carefully blow through lines to remove remaining coolant from heating element.

Remove trim panel for instrument panel.

Installation:

Fill and vent cooling system. See VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (M54/M56) .

Fig 1: Identifying Hose Clamps, Water Hoses, And Flange

Courtesy of BMW OF NORTH AMERICA, INC.

Remove trim panel for instrument panel. See REMOVING AND INSTALLING INSTRUMENT PANEL TRIM .

Unclip air duct for left footwell (2) at mountings (1) and remove in direction of arrow.

Fig 2: Identifying Air Duct

Courtesy of BMW OF NORTH AMERICA, INC.

Loosen screws (1).

Remove left footwell vent (2) in direction of arrow.

Fig 3: Identifying Left Footwell Vent

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Loosen screws (1).

Pull out pipes (2) in direction of arrow.

Installation:

Replace sealing rings.

Fig 4: Identifying Pipes And Screws

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Unhook holder (1).

Unclip heating duct for right footwell (2) and remove in direction of arrow.

Installation:

Ensure heating channel for right footwell (2) is correctly seated.

Fig 5: Identifying Right Footwell Heating Duct And Holder

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Unclip air duct for rear footwell on right (1) and pull out in direction of arrow.

Cover air duct underneath.

Fig 6: Identifying Right Footwell Air Duct

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NOTE:

For purposes of clarity, the following shows the heater/air conditioner removed.

Unclip clip (1).

Loosen screws (2).

Pull heating element cover (3) in direction of arrow out of guide.

Fig 7: Locating Heating Element Cover, Screws, And Clip

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Installation:

Make sure guide is correctly seated.

Fig 8: Identifying Correctly Sealed Guide

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Pull out evaporator temperature sensor (1) in direction of arrow and set to one side.

If necessary, REMOVE SERVODRIVE OF FOOTWELL FLAP and footwell flap (2) in direction of arrow.

Pull out heater element (3) in direction of arrow.

Fig 9: Identifying Evaporator Temperature Sensor, Footwell Flap, And Heater Element

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION:

Do not bend cooling fins.

If necessary, clean or align cooling fins with fin comb.