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

WARNING: This page is about a different car, the 2003 BMW X5, 2002 BMW X5, and 2001 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Remove heater bulkhead. Refer to 51 71 080 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.

Fig 1: Detaching Water Hoses From Flange

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Installation:

Fill and vent cooling system. Refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (M54/M56) .

Remove trim panel for instrument panel. Refer to 51 45 030 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 For Left Footwell

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Loosen screws (1).

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

Fig 3: Locating Left Footwell Vent Retaining Screws

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Loosen screws (1).

Pull out pipes (2) in direction of arrow.

Installation:

Replace sealing rings.

Fig 4: Removing Pipes

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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: Removing Heating Duct For Right Footwell

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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: Locating Air Duct For Rear Footwell On Right

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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: Identifying Heating Element Cover Screws

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Installation:

Make sure guide is correctly seated.

Fig 8: Installing 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. Refer to 64 11 839 REPLACING SERVODRIVE OF FOOTWELL FLAP (AUTOMATIC A/C) .

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

Fig 9: Pulling Out Evaporator Temperature Sensor

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CAUTION: Do not bend cooling fins. If necessary, clean or align cooling fins with fin comb.