64 11 206 Removing and installing or replacing heater

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 528xi, 2010 BMW 528i, 2009 BMW 528xi, 2009 BMW 528i, and 2008 BMW 528xi. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Draw off refrigerant from A/C system.
Remove fresh air duct.
Remove trim for instrument panel. See 51 45 030 REMOVING AND INSTALLING INSTRUMENT PANEL TRIM .
Remove temperature sensor for cold-air distributor.

WARNING: Follow instructions for working on cooling system. See 17 00... INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .

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

Fig 1: Identifying Cover Holder And Support Tube

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Unscrew nuts (1).

Installation:

Tightening torque 64 53 8AZ. See 53 CONDENSER AND DRYER .

Detach refrigerant line (2) in direction of arrow.

Unclip refrigerant line (3).

Fig 2: Identifying Refrigerant Line And Nuts

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WARNING:

When installing heater, make sure left and right air ducts are correctly seated.
Check left and right air ducts for leaks.
If necessary, reseal left and right air ducts with butylene tape.
If left and right air ducts are resealed, make sure flaps can move freely.

Feed out rubber grommet (1).

Installation:

Make sure rubber grommet (1) is correctly seated.

Release nut (2) and detach refrigerant lines (3) and (4) in direction of arrow.

Installation:

Tightening torque 64 53 7AZ. See 53 CONDENSER AND DRYER .

Replace sealing rings.

Release nuts (5) on right air duct.

Fig 3: Identifying Refrigerant Lines And Nut

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Installation:

Tightening torque 64 11 4AZ. See 11 HEATER WITH OPERATION .

Feed out rubber grommet (1).

Installation:

Make sure rubber grommet (1) is correctly seated.

Release spring clamps (2) and detach coolant hoses (3).

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. See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (N52) .

Fig 4: Identifying Rubber Grommet, Spring Clamps And Coolant Hoses

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Release nuts (4) on left air duct.

Installation:

Tightening torque 64 11 4AZ. See 11 HEATER WITH OPERATION .

Disconnect rear compartment air duct (1) in direction of arrow.

Installation:

Make sure rear compartment air duct (1) is correctly seated.

Fig 5: Identifying Rear Compartment Air Duct

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Release screws (1).

Remove left air duct (2) in direction of arrow.

Fig 6: Identifying Left Air Duct And Screw

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Release screws (1).

Remove right air duct (2) in direction of arrow.

Fig 7: Identifying Right Air Duct And Screw

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Carefully lever out locks (1) and (2).

Detach air distributor (3) in direction of arrow.

Installation:

Make sure air distributor (3) is correctly seated.

Fig 8: Identifying Air Distributor, Lever And Locks

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IMPORTANT: Follow instructions for handling optical fibers. See 61 00... NOTES ON HANDLING OPTICAL FIBERS .

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.

If necessary, remove CD changer (1).

Loosen screws (2).

Set fuse-carrier (3) down in footwell.

Fig 9: Identifying Fuse-Carrier And Screws

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Release screws (1).

Installation:

Tightening torque 32 31 6AZ. See 31 STEERING COLUMN .

Fig 10: Identifying Fuse-Carrier And Screws

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Release screws (1).

Installation:

Tightening torque 51 71 15AZ. See 71 GASKETS, SEALS, LOOSE BODY PARTS .

Fig 11: Identifying Fuse-Carrier And Screws

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Release screws (1).

Installation:

Tightening torque 51 71 15AZ. See 71 GASKETS, SEALS, LOOSE BODY PARTS .

Fig 12: Identifying Fuse-Carrier And Screws

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Unscrew nuts (1).

Installation:

Tightening torque 51 71 15AZ. See 71 GASKETS, SEALS, LOOSE BODY PARTS .

Fig 13: Identifying Fuse-Carrier And Screws

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Unscrew nuts (1).

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

Installation:

Tightening torque 51 71 15AZ. See 71 GASKETS, SEALS, LOOSE BODY PARTS .

Fig 14: Identifying Support Nuts

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If necessary, unlock and disconnect plug connections on heater.

Remove heater (1) in direction of arrow.

Installation:

Make sure heater (1) is correctly seated.

Fig 15: Identifying Heater

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Installation:

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

Fig 16: Identifying Condensate Drain And Grommet

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