64 11 219 Replacing heater core (air conditioner control)

Unfasten clip from left air duct, twist air duct and pry out.

Fig 1: Loosening Left Air Duct Clip

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Installation: 

Fit air duct to end wall, twist and insert at bottom of microfilter.

Fig 2: Fitting Air Duct To End Wall & Inserting In Microfilter Bottom

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Unfasten water hoses (1 to 3) on the end wall. Carefully blow through lines to remove remaining coolant from heating element.

Installation: 

Filling and bleeding the cooling system.

Fig 3: Removing Water Hoses

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Remove center console. See 51 16 220 REPLACING WOODEN FINISHERS FOR ODDMENTS TRAY (CENTER CONSOLE)

Remove trim for instrument panel (lower section). See 51 45 030 REMOVING AND INSTALLING TRIM FOR INSTRUMENT PANEL (LOWER SECTION)

Remove steering column. See STEERING COLUMN

Unclip air duct (1) on both sides and pull out in direction of arrow.

Fig 4: Removing Air Duct

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Release screws (1).

Unclip retainers (2) and remove cover for heater element (3) in direction of arrow.

Fig 5: Removing Heater Element Cover

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Detach air flap (1) in direction of arrow from shaft.

Unclip retainer (2).

Release screws (4) and pull housing section (3) in direction of arrow out of guide.

Fig 6: Removing Housing Section

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Screw on hose clamps (1) and detach pipes in direction of arrow.

Installation: 

Replace sealing rings.

Ensure sealing rings and hose clamps (1) are correctly seated.

Pull out housing section (2) in direction of arrow.

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

Fig 7: Removing Housing Section & Heater Element

Courtesy of BMW OF NORTH AMERICA, INC.