64 11 208 Replacing heater core

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IMPORTANT: Determine manufacturer of installed heater (Denso or Behr) before ordering spare parts!

Remove trim panel for pedal assembly .

Fig 1: Heater (Denso Or Behr) Type

G04753577

Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary tasks:

Remove heater/air conditioner

Release screws (1).

Slide rubber grommet (1) with foam seal forward slightly.

Carefully feed pipe holder (3) with pipes (4) past rubber grommet (2).

Installation:

If necessary, replace rubber grommet (1) and/or foam seal.

Make sure rubber grommet (1) is correctly seated on pipe holder (3).

Fig 2: Screws, Rubber Grommet, Pipe Holder, Pipes And Removal Direction

G04727805

Courtesy of BMW OF NORTH AMERICA, INC.

If necessary, remove coolant hose (2).

Release screws (3) and remove cover.

NOTE: Diesel version only:

Unfasten plug connection (1) and disconnect.

Withdraw electric auxiliary heater (4) in direction of arrow.

Remove heater (5) from heater/air conditioner (6).

Fig 3: Plug Connection, Coolant Hose, Screws, Heater, Electric Auxiliary Heater, Heater/Air Conditioner And Removal Direction

G04727806

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) and slide screw clamps (2) forwards slightly.

Remove pipes (3) from heater core (4).

Installation:

Replace sealing rings.

Coat sealing rings with antiseize agent.

Make sure sealing rings are correctly seated.

Fig 4: Screws, Screw Clamps, Pipes, Heater Core And Removal Direction

G04727807

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Inflow connection (3) may only be positioned at the bottom.

When installing, make sure that the return-flow connection (2) (larger opening) marked with a black dot (1) is positioned at the top.

Inflow connection (3) accordingly may only be positioned at the bottom.

Fig 5: Black Dot, Inflow Connection And Return-Flow Connection

G04727808

Courtesy of BMW OF NORTH AMERICA, INC.