64 11 206 Removing and installing/replacing heating and air-conditioning unit (N20, N26)

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 oil.
Read and comply with safety instructions:

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 A/C 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:

Drain off AIR CONDITIONING SYSTEM
Remove SUPPORT FOR DASHBOARD

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.

Fig 1: Identifying Plastic Clamp And Intake Pipe

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Example illustration F20/N13

Release screws (1).

Tightening torque 64 53 1AZ .

Installation note:

Replace sealing rings.

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

Fig 2: Identifying 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 3: Identifying Hose Clamps And Coolant Hoses

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Carefully blow out coolant connections on heat exchanger for heating system to remove remaining coolant.
Seal openings or lines on heat exchanger for heating system with special tool 32 1 270 to avoid escape of media and contamination.

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.

Attention!

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 heating and air-conditioning unit (2).

Replacement:

Remount EVAPORATOR
Remount HEAT EXCHANGER FOR HEATING SYSTEM
Remount EXPANSION VALVE
Remount ALL CONTROLLER DRIVES

After installation:

EVACUATE AND FILL AIR CONDITIONING
Bleed and fill cooling system . See 17 00 039 BLEED AND FILL COOLING SYSTEM WITH VACUUM FILLING UNIT , 17 00 039 BLEED COOLING SYSTEM AND CHECK FOR WATERTIGHTNESS (N20, N26) or 17 00 039 BLEED COOLING SYSTEM AND CHECK FOR WATERTIGHTNESS (N20, N26)
ATTENTION!

Filling and bleeding must not be performed in ECO-PRO MODE!