64 12 021 Removing and installing independent/auxiliary heater

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 535xi, 2010 BMW 535i, 2009 BMW 535xi, 2009 BMW 535i, and 2008 BMW 535xi. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

13 3 010

Necessary preliminary tasks:

WARNING: Danger of scalding!
Only perform the following tasks on an engine that has cooled down.
FOLLOW INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .

NOTE: DISCONNECT coolant hoses on independent heater.

NOTE: Disconnect fuel line on independent heater with special tool 13 3 010.

Fig 1: Identifying Special Tool (13 3 010)

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Recycling:

Fuel escapes when fuel line is detached. Have a suitable collecting container ready.

Catch and dispose of escaping fuel.

Observe country-specific waste-disposal regulations.

Release hose clip (1) and detach fuel line.

Release spring clips (2) and detach coolant hoses.

Installation:

Top up coolant and vent cooling system.

Unscrew nut (3).

Fig 2: Identifying Spring Clips, Hose Clip And Nut

Courtesy of BMW OF NORTH AMERICA, INC.

WARNING: Secure independent heater against falling out.

Disconnect plug connections (1) and (2).

IMPORTANT: To avoid damaging the independent heater, it is absolutely essential to adhere to the following connecting sequence for the plug connections during installation:

Plug connection (1)
Plug connection (2)

Release screws (3).

Remove independent heater (4) in direction of arrow.

Fig 3: Removing Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Make sure exhaust pipe of independent heater (4) is correctly seated in muffler (5).