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 528xi, 2010 BMW 528i, 2009 BMW 528xi, 2009 BMW 528i, and 2008 BMW 528xi. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

13 3 010 . See FUEL SYSTEM - SPECIAL TOOLS .

Necessary preliminary tasks:

Remove left front wheel.
Remove front left wheel arch lining. See 51 71 040 REMOVING AND INSTALLING/REPLACING FRONT LEFT OR RIGHT WHEEL ARCH COVER .
Remove left underbody paneling. See 51 47... REMOVING AND INSTALLING/REPLACING LEFT OR RIGHT UNDERBODY PANELLING .

WARNING: Danger of scalding!
Only perform the following tasks on an engine that has cooled down.
Follow instructions for working on cooling system. See 17 00... 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)

Courtesy of BMW OF NORTH AMERICA, INC.

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. See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (N52) .

Unscrew nut (3).

Fig 2: Identifying Hose Clip, Spring Clips 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.

Installation:

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

Fig 3: Identifying Independent Heater, Muffler, And Screws

Courtesy of BMW OF NORTH AMERICA, INC.