64 11 206 Removing and installing/replacing heating and air-conditioning unit (N47)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2016 BMW 328i xDrive, 2016 BMW 328d xDrive, 2015 BMW 328i xDrive, 2015 BMW 328d xDrive, and 2014 BMW 328i xDrive. 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!
Avoid contact with refrigerant and refrigerant fluid.
Read and comply with safety information:

Handling R 134a (tetrafluorethane) refrigerant . See 6450... NOTE FOR HANDLING R134A REFRIGERANT or 6450... SAFETY INFORMATIONS FOR HANDLING TETRAFLUORETHANE REFRIGERANT R134A
HANDLING REFRIGERANT OIL

IMPORTANT: Risk of damage!
Restart engine only when air conditioning system has been correctly filled.
Follow NOTES for opening and replacing parts in refrigerant circuit.
If air conditioning system is opened for more than 24 hours: REPLACE CONDENSER FOR AIR CONDITIONING .

Necessary preliminary tasks:

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 screws (1).

Tightening torque 64 53 1AZ .

Disconnect refrigerant lines (2) and lay to one side.

Installation note:

Replace sealing rings.

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

Fig 1: Identifying Refrigerant Lines And Screws

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) with special tool 17 2 050 and detach coolant hoses (2).

Fig 2: Identifying Hose Clamps And Coolant Hoses

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Carefully blow out coolant ports on the heat exchanger to remove the remaining coolant.
Close openings or line to heat exchanger with special tool 32 1 270 , to avoid media leak and dirt contamination.

Pull off air duct (3) in direction of arrow.

Fold the carpet up and loosen the nut (1).

Remove ground cable (2).

Fig 3: Removing Air Duct And Ground Cable

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 4: Identifying Plug Connection, Air Duct, Spray Condensate Drain And Air Conditioning Unit

Courtesy of BMW OF NORTH AMERICA, INC.

WARNING: Protect passenger compartment against emerging coolant.

Unfasten plug connection (3) and disconnect.

Unclip the air duct (1) to the right of the heating and air-conditioning unit (2).

Unclip the wiring harness at the marked points.

Feed out heating and air-conditioning unit (2) in direction of arrow.

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

Installation note:

Spray condensate drain (4) with lubricant G13 (sourcing reference BMW Parts Department) before installation of heating and air-conditioning unit (2).

Heating and air-conditioning unit (2) must fit exactly on condensate drain (4).

Perform a visual inspection after installing the heater (2).

Replacement:

Modify EVAPORATOR
Modify HEAT EXCHANGER
Modify EXPANSION VALVE
Modify ALL ACTUATOR DRIVES
Modify ELECTRIC AUXILIARY HEATER (FRONT)

After installation:

EVACUATE AND FILL AIR CONDITIONING
BLEED AND FILL COOLING SYSTEM
IMPORTANT: Filling and bleeding must not be performed in ECO-PRO MODE!