64 12 160 Removing and installing or replacing complete independent heater with bracket

WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Scalding hazard!
Work on independent heating may only be carried out when it has cooled down.

Recycling

Fuel escapes when fuel lines are detached. Have a suitable collecting container ready.

Catch and dispose of escaping fuel.

Observe country-specific waste-disposal regulations.

Necessary preliminary tasks

Drain coolant from radiator
Remove front left wheel arch trim

NOTE: For purposes of clarity, graphic shows front bumper removed.

Disconnect plug connection (1).

Fig 1: Identifying Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect coolant hoses (1) and catch coolant in a suitable container.

Release screw (2).

Tightening torque 64 12 3AZ .

Release fuel line (3) and catch escaping fuel in a suitable container.

Release nuts (4) and remove complete independent heater bracket.

Tightening torque 64 12 1AZ .

Fig 2: Identifying Coolant Hoses, Fuel Line With Screw And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

When replacing independent heater without bracket

Unclip retainer of intake silencer.

Turn metal tube (1) clockwise and remove intake silencer.

Release screws (2) and remove silencer (3).

Tightening torque 64 12 1AZ .

Install fuel intake line with filter.

Fig 3: Identifying Metal Tube And Intake Silencer With Screws

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Remove coolant hoses (1) and feed out of bracket.

Installation:

Risk of damage!

Make sure abrasion guard (2) is correctly seated.

Fig 4: Identifying Coolant Hoses And Abrasion Guard

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Disconnect plug connection (1).

Release screws (2) and remove independent heater from bracket (3).

Tightening torque 64 12 4AZ .

Fig 5: Identifying Plug Connection And Bracket Screws

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WARNING: Diesel vehicles only:

Independent heaters many only be operated with the associated fuel pump.

In the event of incorrect installation, fuel can escape and black smoke can be issued when the independent heater is started.

Because of different build dates, installed fuel pumps must be checked.

Read out the heater number via the BMW DIS system and use this number to determine the associated fuel pump from the table below.

Determine fitted fuel pump model and if necessary install new FUEL PUMP .

Component allocation:

FUEL PUMP COMPONENTS REFERENCE CHART

	Build date up to 09/2006	Build date from 09/2006
Heater number:	6 974 470	9 112 792
Fuel pump:	DP40: 6 951 678 (black housing)	DP41: 6 979 466 (grey housing + yellow warning sticker)

After installation

Vent cooling system