64 12 021 Removing and installing independent/auxiliary heater

WARNING: This page is about a different car, the 2010 BMW M5, 2009 BMW M5, and 2008 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools Required

13 3 010

Removal & Installation

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 PANELING .

WARNING: Danger of scalding!
Only perform the following tasks on an engine that has cooled down.

NOTE: Disconnect coolant hoses on independent heater.

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

Fig 1: Using Special Tool 13 3 010 To Aid Disconnecting Fuel Line On Independent Heater

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.

Unscrew nut (3).

Fig 2: Releasing Spring Clips And Detach Coolant Hoses

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 Exhaust Pipe Of Independent Heater

Courtesy of BMW OF NORTH AMERICA, INC.