64 11 206 Removing and installing or replacing heater

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2010 BMW M6, 2010 BMW 650i, 2009 BMW M6, 2009 BMW 650i, and 2008 BMW M6. 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, refer to 64 50 009 DRAWING OFF, EVACUATING AND FILLING A/C SYSTEM (R 134A) .
Remove instrument panel trim, refer to 51 45 030 REMOVING AND INSTALLING INSTRUMENT PANEL TRIM .
Remove temperature sensor for cold-air distributor, refer to 64 11 916 REPLACING TEMPERATURE SENSOR FOR COLD-AIR DISTRIBUTOR .
Remove control unit for Car Access System, refer to 61 35 015 REMOVING AND INSTALLING (REPLACING) CONTROL UNIT FOR CAR ACCESS SYSTEM .
In appropriate version:
- Remove head-up display, refer to 62 30 010 REMOVING AND INSTALLING/REPLACING HEAD-UP DISPLAY .

WARNING: Cover protruding threaded pins, corner points and edges on support tube to prevent injuries.

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

Unscrew nuts (1).

Installation:

Tightening torque, refer to 64 53 8AZ in HEATING AND AIR CONDITIONING - TIGHTENING TORQUES - 645CI .

Detach refrigerant line (2) in direction of arrow.

Unclip refrigerant line (3).

Fig 1: Detaching Refrigerant Line In Direction Of Arrow

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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 air 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.

Fig 2: Releasing Nut And Detach Refrigerant Lines And In Direction Of Arrow

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Installation:

Tightening torque refer to 64 53 7AZ in HEATING AND AIR CONDITIONING - TIGHTENING TORQUES - 645CI .

Replace sealing rings.

Release nuts (5) on right air duct.

Installation:

Tightening torque, refer to 64 11 4AZ in HEATING AND AIR CONDITIONING - TIGHTENING TORQUES - 645CI .

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, refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (N62) .

Release nuts (4) on left air duct.

Fig 3: Releasing Nuts On Left Air Duct

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Installation:

Tightening torque, refer to 64 11 4AZ in HEATING AND AIR CONDITIONING - TIGHTENING TORQUES - 645CI .

Remove soundproofing from left A-pillar (1) in direction of arrow.

Release screws (2).

Remove left air duct (4) in direction of cold-air distributor (3).

Fig 4: Removing Left Air Duct In Direction Of Cold-Air Distributor

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Remove soundproofing from right A-pillar (1) in direction of arrow.

Release screws (2).

Remove right air duct (4) in direction of cold-air distributor (3).

Fig 5: Removing Soundproofing From Right A-Pillar

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

Detach cold-air distributor (3) in direction of arrow.

Installation:

Make sure cold-air distributor (3) is correctly seated.

Fig 6: Detaching Cold-Air Distributor

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IMPORTANT: Follow instructions for handling optical fibers, refer to 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), refer to 65 11 072 REMOVING AND INSTALLING/REPLACING CD CHANGER .

Release screws (2).

Set fuse-carrier (3) down in footwell.

Fig 7: Releasing Screws From CD Changer

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Fig 8: Removing Footwell Heater Ducts

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Feed out footwell heater ducts (1) and remove.

Release screws (2), tightening torque, refer to 51 71 15AZ in BODY EQUIPMENT - TIGHTENING TORQUES - 645CI .

Release screws (3), tightening torque, 21.4 N.m.

Release nuts (4), tightening torque, refer to 51 71 15AZ in BODY EQUIPMENT - TIGHTENING TORQUES - 645CI .

Pull back support tube (5) and remove from vehicle with assistance of a second person.

If necessary, unlock and disconnect plug connections on heater (1).

Remove heater (1) in direction of arrow.

Fig 9: Removing Heater In Direction Of Arrow

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Installation:

Make sure heater (1) is correctly seated.

Installation:

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

Fig 10: Installing Condensate Drain Is Correctly Seated In Grommet On Both Sides

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