64 11 208 Replacing heat exchanger

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2017 BMW 550i GT xDrive, 2017 BMW 535i GT xDrive, 2017 BMW 535i GT, 2016 BMW 550i GT xDrive, and 2016 BMW 535i GT xDrive. 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: Clamping Coolant Hoses Using Hose Clamps

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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 Routing Holder From Working Area Screws

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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 From Angle Positioning Lever

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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

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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 Water Pipes And Heat Exchanger

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After installation

BLEED AND FILL COOLING SYSTEM .

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