64 11 208 Replacing heat exchanger

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

Necessary preliminary tasks

Remove INSTRUMENT PANEL TRIM .
Remove LEFT/REAR SUSPENSION CROSS-BRACE. .
Remove BULKHEAD UPPER SECTION SOUND INSULATION .

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.

IMPORTANT: Connections must not be mixed up!

Mark connection sequence of coolant hoses prior to removal.

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

Fig 1: Identifying Plug Connection

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.

Release screws (1).

Installation note:

Replace screws.

Remove cable routing holder (2) from the working area.

Fig 2: Identifying Cable Guide Holder And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For purposes of clarity, picture shows heating and air-conditioning unit removed.

Unclip deflection arm (1) from angle positioning lever (2).

Installation note:

Deflection arm (1) must snap audibly into place!

Fig 3: Identifying Deflection Arm

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Unlock and disconnect plug connections on upper distributor housing (2).

Remove upper distributor housing (2).

Installation note:

Make sure filter housing guide lugs (3) are correctly seated in associated guide tabs on upper distributor housing (2).

Fig 4: Identifying Upper Distributor Housing And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip pipe clamps(1).

IMPORTANT: Risk of contamination!
Escaping coolant must not get into the passenger compartment.

Remove water pipes (2).

Remove heat exchanger in direction of arrow.

Installation note:

Replace sealing rings.

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

Fig 5: Removing Heat Exchanger And Water Pipes

Courtesy of BMW OF NORTH AMERICA, INC.

After installation

BLEED AND FILL COOLING SYSTEM.

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