64 11 206 Removing and installing/renewing heating unit

WARNING: This page is about a different car, the 2011 BMW X6 and 2010 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

WARNING: Danger of injury!
Refrigerant circuit is under high pressure!
Follow safety information for handling R134a refrigerant. See SAFETY INFORMATION and INSTRUCTIONS FOR HANDLING .
Avoid contact with refrigerant and refrigerant oil.
Follow safety information for HANDLING REFRIGERANT OIL .

IMPORTANT: Risk of damage!
Restart engine only when A/C system has been correctly filled.
Follow INSTRUCTIONS for opening and replacing parts in refrigerant circuit.
If air conditioning system is opened for more than 24 hours: REPLACE DESICCANT INSERT FOR A/C SYSTEM

Necessary preliminary tasks:

Drain off AIR CONDITIONING SYSTEM
Remove support for dashboard
Unclip wiring harness mounting from heater
Remove FRESH AIR DUCT
Remove LEFT PARTITION WALL FOR UNITS COMPARTMENT

N52, N62 only:

Remove intake silencer housing

N63 only:

Remove LEFT INTAKE SILENCER HOUSING

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

Tightening torque 64 53 2AZ .

Installation note:

Replace sealing rings.

Use special tool 00 9 030 to mount sealing rings without damaging them.

Fig 1: Identifying Refrigerant Lines With Lid And Screw

G04792567

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

Fig 2: Identifying Coolant Hose Clamps

G04792568

Courtesy of BMW OF NORTH AMERICA, INC.

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

Tightening torque 64 11 4AZ .

Fig 3: Identifying Heating Unit Nuts

G04792569

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 4: Identifying Windscreen Air Duct And Screw

G04792570

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque 64 11 4AZ .

Fig 5: Identifying Heating Unit Screw

G04792571

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque 64 11 4AZ .

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

Feed out heater (2).

Fig 6: Identifying Heater And Screw

G04792572

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Modify EVAPORATOR
Modify heater core
Modify EXPANSION VALVE
Modify all actuator drives

Installation note:

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

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

Fig 7: Identifying Water Drain And Water Channel

G04792573

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

EVACUATE AND FILL A/C SYSTEM
FILL AND VENT cooling system