64 11 206 Removing and installing/renewing heating unit

WARNING: This page is about a different car, the 2013 BMW X5 M, 2012 BMW X5 M, 2011 BMW X5 M, and 2010 BMW X5 M. 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 instructions for handling R 134a refrigerant See 64 50... SAFETY INFORMATIONS FOR HANDLING TETRAFLUORETHANE REFRIGERANT R134A or 64 50... INSTRUCTIONS FOR HANDLING R 134A REFRIGERANT .
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 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 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 Underneath 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 Screws

G04792570

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque 64 11 4AZ .

Fig 5: Identifying Windscreen Air Duct Mounting Screws

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 Mounting Screws

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 Channel And Drain

G04792573

Courtesy of BMW OF NORTH AMERICA, INC.

After installation

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