64 11 205 Removing And Installing/Replacing Heater (Basis Automatic A/C)

WARNING: This page is about a different car, the 2005 BMW 760Li, 2004 BMW 760i, 2004 BMW 760Li, and 2003 BMW 760Li. 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. Refer to 64 50... SAFETY INSTRUCTIONS FOR HANDLING REFRIGERANT R 134A . Follow safety instructions for handling refrigerant oil. Refer to 64 50... SAFETY PRECAUTIONS WHEN HANDLING REFRIGERANT OIL (FOR REFRIGERANT R 134A) . Follow instructions for working on cooling system. Refer to 17 00... INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .

NOTE: The time value given for this work operation does not include drawing off, evacuating and filling the A/C system!

Drain off air conditioner. Refer to 64 50 009 DRAWING OFF, EVACUATING AND FILLING A/C SYSTEM (R 134A) .

IMPORTANT: Risk of damage! Restart engine only when A/C system has been correctly filled. Comply with notes and instructions on handling optical waveguides. Refer to 61 00... NOTES ON HANDLING OPTICAL FIBERS .

NOTE: If A/C system is opened for more than 24 hours: Replace desiccant insert for A/C system. Refer to 64 53 551 REMOVING AND INSTALLING/REPLACING CONDENSER FOR A/C SYSTEM (AUTOMATIC A/C HIGH) .

Necessary Preliminary Tasks:

Disconnect battery negative lead, refer to 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD .
If necessary, remove acoustic cover.
Remove center of assembly compartment bulkhead. Refer to 51 71 085 REMOVING AND INSTALLING CENTER OF ASSEMBLY COMPARTMENT BULKHEAD .
Remove fresh air duct on left and right. Refer to 64 31 056 REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT FRESH-AIR DUCT (AUTOMATIC A/C HIGH) .
Remove trim on instrument panel. Refer to 51 45 030 REMOVING AND INSTALLING INSTRUMENT PANEL TRIM .

After installation:

Venting cooling system and checking for water leaks. Refer to 17 00 009 CHECKING COOLING SYSTEM FOR LEAKS (N73) .

Gently pull out locks of quick-release couplings (1) and detach coolant hoses (2).

Fig 1: Detaching Coolant Hoses

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IMPORTANT: Carefully blow through aluminum triple pipe to remove remaining coolant from heater element.

Installation:

Vent cooling system and check for leaks. Refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (N73) .

Release screws (3) and detach refrigerant lines (4).

Installation:

Replace sealing rings.

Tightening torque, refer to, refer to 64 52 1AZ in HEATING AND AIR CONDITIONING - TIGHTENING TORQUES .

Release steering spindle lower section, refer to 32 31 070 REMOVING AND INSTALLING/REPLACING LOWER SECTION OF STEERING SPINDLE .

Unscrew nuts (1).

Fig 2: Identifying Grommet

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Installation:

Check that grommet (2) is correctly seated.

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 secured and laid.

Release retainers and unclip defroster vent (1) at catches.

Carefully lift out defroster vent (1).

Release screws (2).

Installation:

Tightening torque, refer to 51 71 12AZ. Refer to BODY EQUIPMENT - TIGHTENING TORQUES .

Unscrew nuts (3).

Fig 3: Releasing Defroster Vent

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Release screws (1).

Lay fuse-carrier (2) to one side.

Unscrew nuts (3).

Fig 4: Identifying Fuse-Carrier

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Unscrew nuts (1).

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

Fig 5: Detaching Support Tube

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Remove soundproofing on left and right from heater.
Disconnect plug connections.
If necessary, release wiring harness and lay to one side.

Installation:

Make sure soundproofing on left and right is correctly seated.

Ensure correct wiring harness routing.

Unscrew nuts (1).

Remove heater (2) in direction of arrow.

Installation:

Make sure heater (2) is correctly seated.

Fig 6: Removing Heater

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Installation:

Make sure condensate drain (1) and intermediate piece (2) on left and right are correctly seated.

Fig 7: Identifying Condensate Drain And Intermediate Piece

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