64 11 207 Replacing heater core

WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2006 BMW 330Ci, 2005 BMW 330xi, 2005 BMW 330i, 2005 BMW 330Ci, and 2004 BMW 330xi. However, it is still accessible from the selected car via links, so may be relevant.

Remove microfilter housing. See 51 71 080 REMOVING AND INSTALLING/REPLACING HEATER BULKHEAD

Remove panel for instrument panel. See 51 45 030 REMOVING AND INSTALLING INSTRUMENT PANEL TRIM

WARNING: Danger of scalding!
Only perform this work after engine has cooled down.

Release hose clamps (1) and (2).

Detach water hoses.

Carefully blow through lines to remove remaining coolant from heating element.

Installation:

Filling and bleeding the cooling system. See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (M54 / M56)

Fig 1: Releasing Hose Clamps

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Withdraw temperature sensor (1). Unclip wiring harness (2).

Fig 2: Withdrawing Temperature Sensor

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Release screw (1) and remove bracket (2) from double pipe. Unclip retainers (3) and lift off cover for heating element (4).

Installation:

First insert lugs (5).

Fig 3: Releasing Screw & Removing Bracket

Courtesy of BMW OF NORTH AMERICA, INC.

Remove retainers (1) and remove double pipe (2) towards top. Raise heating element (3) at front and remove.

Installation:

Replace seals.

Coat sealing rings with antiseize agent and ensure correct seating.

Fig 4: Removing Retainers & Double Pipe Towards Top

Courtesy of BMW OF NORTH AMERICA, INC.