64 11 206 Removing And Installing/Replacing Heater

WARNING: This page is about a different car, the 2010 BMW X5, 2009 BMW X5, 2008 BMW X5, and 2007 BMW X5. 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 See 64 50 ... INSTRUCTIONS FOR HANDLING REFRIGERANT OIL (FOR REFRIGERANT R 134A) .
Follow safety instructions for handling refrigerant oil . See 64 50 ... INSTRUCTIONS FOR HANDLING REFRIGERANT OIL (FOR REFRIGERANT R 134A) .

IMPORTANT: Risk of damage
Restart engine only when A/C system has been correctly filled.
If A/C system is opened for more than 24 hours: Replacing drier insert for A/C system

Necessary preliminary tasks:

Drain off air conditioner . See 64 50 009 DRAWING OFF, EVACUATING AND FILLING A/C SYSTEM (R 134A) .
Remove carrier for instrument panel . See 51 45 075 REMOVING AND INSTALLING CARRIER FOR INSTRUMENT PANEL .
Unclip wiring harness holders from heater

Recycling

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

Catch and dispose of escaping coolant.

Observe country-specific waste-disposal regulations.

Release screw (1) and remove refrigerant lines with cover (1) and associated seal.

Tightening torque. See HEATING AND AIR CONDITIONING - TIGHTENING TORQUES .

Replace sealing rings and moisten with refrigerant oil.

Fig 1: Identifying Refrigerant Lines With Screw

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Connections must not be mixed up!
Mark connection sequence of water hoses prior to removal.

Release hose clamps (1) and detach water hoses.

Fig 2: Identifying Hose Clamps

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (1) and nut (2) underneath.

Tightening torque. See HEATING AND AIR CONDITIONING - TIGHTENING TORQUES .

Fig 3: Identifying Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) and remove windscreen air guide (2).

Fig 4: Identifying Windscreen Air Guide With Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque. See HEATING AND AIR CONDITIONING - TIGHTENING TORQUES .

Fig 5: Identifying Heater Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque. See HEATING AND AIR CONDITIONING - TIGHTENING TORQUES .

IMPORTANT: Cover vehicle interior with protective cover to prevent interior being fouled by escaping coolant.

Feed out heater (2).

Fig 6: Identifying Heater Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Modify evaporator . See 64 51 002 REPLACING EVAPORATOR .
Modify heater core
Modify expansion valve . See 64 51 525 REMOVING AND INSTALLING OR REPLACING EXPANSION VALVE .
Modify all servodrives

Installation:

Water drain (1) must be inserted on both sides into outlet channel (2).

IMPORTANT: In the event of incorrect fitting, there is a risk of leakage in the passenger compartment!

Fig 7: Identifying Water Drain With Outlet Channel

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Evacuate and fill A/C system . See 64 50 009 DRAWING OFF, EVACUATING AND FILLING A/C SYSTEM (R 134A) .
Fill and vent cooling system