64 11 206 Removing and installing/replacing heating and air-conditioning unit

Special tools required: 

• 17 2 050
• 32 1 270

Read and comply with all applicable SAFETY INFORMATION .

Required preliminary work  for the removal and installation of the heating and air-conditioning unit:

• Drain off AIR CONDITIONING SYSTEM 
• Remove SUPPORT FOR DASHBOARD
• Remove EXPANSION VALVE 

Required preliminary work  for the replacement of the heating and air-conditioning unit and the subsequent modification of the controller drives:

• Ignition ON
• Use the BMW diagnosis system to move the controller drives into the installation position as follows:

• Service functions
• Body
• Heating and air conditioning functions
• Flap motors
• Installation position of flap motors

• DISCONNECT ALL PLUG CONNECTIONS FROM THE CONTROL UNIT FOR THE HEATING AND AIR-CONDITIONING SYSTEM 
• Ignition off
• Disconnect BATTERY EARTH LEAD
• Drain off AIR CONDITIONING SYSTEM 
• Remove SUPPORT FOR DASHBOARD
• Remove EXPANSION VALVE 

Recycling 

Coolant emerges when coolant lines are detached. Have a suitable collecting vessel ready.

Catch and dispose of escaping coolant.

Observe country-specific waste disposal regulations.

Release hose clamps (1) with special tool 17 2 050 and detach coolant hoses (2).

Fig 1: Locating Coolant Hose Clamps

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Disengage cable clip (2).

Fig 2: Locating Control Unit Plug Connection And Clip

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Fig 3: Locating Heating And Air-Conditioning Unit Plug Connection

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Replacement: 

Operation is described in: Replacing EVAPORATOR .

Installation: 

Installation note: 

Spray the condensate drain (2) with G14 lubricant (sourcing reference BMW Parts Department) before installing the heating and air-conditioning unit (1).

Heating and air-conditioning unit (1) must fit exactly on condensate drain (2).

Perform a visual inspection after installing the heating and air-conditioning unit (1).

Fig 4: Installing Heating And Air-Conditioning Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 5: Locating Heating And Air-Conditioning Unit Plug Connection

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Join and lock plug connection (1).

Engage cable clip (2).

Fig 6: Locating Control Unit Plug Connection And Clip

Courtesy of BMW OF NORTH AMERICA, INC.

Slide on coolant hoses (2) and secure hose clamps (1) with special tool 17 2 050 .

Fig 7: Locating Coolant Hose Clamps

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Required follow-up work: 

• Evacuate and fill AIR CONDITIONING 
• Bleed and fill COOLING SYSTEM