64 11 206 Removing and installing or replacing heater

WARNING: This page is about a different car, the 2010 BMW 535xi, 2009 BMW 535xi, and 2008 BMW 535xi. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

WARNING: FOLLOW 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 note:

Tightening torque 64 53 8AZ .

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 note:

Make sure rubber grommet (1) is correctly seated.

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

Installation note:

Tightening torque 64 53 7AZ .

Replace sealing rings.

Release nuts (5) on right air duct.

Installation note:

Tightening torque 64 11 4AZ .

Fig 3: Identifying Refrigerant Lines And Nut

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Feed out rubber grommet (1).

Installation note:

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 note:

Vent cooling system and check for leaks.

Release nuts (4) on left air duct.

Installation note:

Tightening torque 64 11 4AZ .

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

Installation note:

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

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

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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 note:

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 .

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 note:

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 note:

Tightening torque 32 31 6AZ .

Fig 10: Identifying Fuse-Carrier And Screws

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Release screws (1).

Installation note:

Tightening torque 51 71 15AZ .

Fig 11: Identifying Fuse-Carrier And Screws

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Release screws (1).

Installation note:

Tightening torque 51 71 15AZ .

Fig 12: Identifying Fuse-Carrier And Screws

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Unscrew nuts (1).

Installation note:

Tightening torque 51 71 15AZ .

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 note:

Tightening torque 51 71 15AZ .

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 note:

Make sure heater (1) is correctly seated.

Fig 15: Identifying Heater

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Installation note:

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

Fig 16: Identifying Condensate Drain And Grommet

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