64 11 206 Removing and installing/replacing heater

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2008 BMW 335xi, 2008 BMW 335i, 2008 BMW 328xi, 2008 BMW 328i, and 2008 BMW 323i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Avoid contact with refrigerant and refrigerant oil.

Follow safety Instructions For Handling Refrigerant R 134A .

Follow safety Instructions For Handling Refrigerant Oil .

WARNING: Follow Instructions For Working On Cooling System.

IMPORTANT: Risk of damage!

Restart engine only when A/C system has been correctly filled.

NOTE: If A/C system is opened for more than 24 hours: Replace Desiccant Insert For A/C System

Necessary preliminary tasks:

Draw off Refrigerant From A/C System
Remove Lower Section Of Microfilter Housing
Remove Expansion Valve
Remove Instrument Panel Trim
Remove Complete Steering Column
Disconnect Plug Connection For Control Unit for car access system

WARNING: To avoid injury, cover holder (1) on support tube (2).

Fig 1: Identifying Heater Cover Holder And Support Tube

Courtesy of BMW OF NORTH AMERICA, INC.

Release cover cap (1) from bulkhead (2).

Fig 2: Identifying Heater Cover Cap And Bulkhead

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Release screw (1).

For tightening torque refer to 64 11 1AZ in 64 11 HOUSING, HEATER/AIR CONDITIONER .

Fig 3: Identifying Heater Cover Cap Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Detach right footwell heating duct (1) in area (2) in direction of arrow.

Detach right footwell heating duct (1) with adapter (3) from heater/air conditioner and remove in direction of arrow from right rear compartment heating duct (4).

Fig 4: Identifying Right Footwell Heating Duct, Adapter And Right Rear Compartment Heating Duct

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Lower instrument panel trim partially shown.

Detach left footwell heating duct (1) in area (2) in direction of arrow.

Detach left footwell heating duct (1) with adapter (3) from heater/air conditioner and remove in direction of arrow from left rear compartment heating duct (4).

Fig 5: Identifying Left Footwell Heating Duct, Adapter And Left Rear Compartment Heating Duct

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Make sure retainer (2) is correctly seated on left/right footwell heating duct (1).

Insert footwell heating duct (1) with adapter (3) in rear compartment heating duct (4).

Attach footwell heating duct (1) in area (4) to heater/air conditioner. Make sure assembly is locked exactly at point (5).

Fig 6: Identifying Retainer, Footwell Heating Duct, Locking Point And Adapter

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip refrigerant line (3).

Feed out rubber grommet (4).

Installation:

Make sure rubber grommet (4) is correctly seated.

IMPORTANT: Carefully blow through aluminum triple pipe to remove remaining coolant from heat exchanger for heating system.

Installation:

Vent cooling system and Check For Leaks .

Fig 7: Identifying Refrigerant Line And Rubber Grommet

Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary tasks:

Disconnect all necessary cable ties on support tube.
Release wiring harnesses/cable ducts and lay to one side.
If necessary, remove control units/disconnect plug connections.

Installation:

Make sure wiring harnesses/cable ducts are correctly routed and secured.

Release screw (1) of heater on support tube (2).

For tightening torque refer to 51 71 6AZ in 51 71 SEALS AND LOOSE BODY PARTS .

Fig 8: Identifying Heater Screw And Support Tube

Courtesy of BMW OF NORTH AMERICA, INC.

Detach wiring harness (3) from support tube (2).

Release screws (1) of heater on support tube (2).

For tightening torque refer to 64 11 6AZ in 64 11 HOUSING, HEATER/AIR CONDITIONER .

Fig 9: Identifying Wiring Harness, Support Tube And Heater Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release nuts (1) on right on support tube (2).

Tightening torque 51 71 5AZ.

Fig 10: Identifying Nuts And Support Tube

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Release nuts (1) on left on support tube (2).

For tightening torque refer to 51 71 5AZ in 51 71 SEALS AND LOOSE BODY PARTS .

Fig 11: Identifying Nuts And Support Tube

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) on support tube (2).

For tightening torque refer to 51 71 5AZ in 51 71 SEALS AND LOOSE BODY PARTS .

Fig 12: Identifying Support Tube And Mounting Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) on support tube (2) from bracket (3).

For tightening torque refer to 51 71 4AZ in 51 71 SEALS AND LOOSE BODY PARTS .

Detach support tube (2) and remove from vehicle with assistance of a second person.

Fig 13: Identifying Support Tube, Bracket And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Remove heater.

Installation:

Make sure heater (1) is correctly seated.

Installation:

Make sure condensate drain (1) is correctly seated in grommet (2).

Fig 14: Identifying Heater Condensate Drain And Grommet

Courtesy of BMW OF NORTH AMERICA, INC.