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

WARNING: This page does not describe the selected car, but rather 23 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 335xi, 2012 BMW 328xi, and 2012 BMW 328i. 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: Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

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

Release screw (2).

For tightening torque refer to 64 12 3AZ in 64 12 INDEPENDENT HEATER .

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

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

For tightening torque refer to 64 12 1AZ in 64 12 INDEPENDENT HEATER .

Fig 2: Coolant Hoses, Screws, Fuel Line 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).

For tightening torque refer to 64 12 1AZ in 64 12 INDEPENDENT HEATER .

Install fuel intake line with filter.

Fig 3: Metal Tube, Screws And Silencer

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation:

Risk of damage!

Make sure abrasion guard (2) is correctly seated.

Fig 4: Coolant Hoses And Abrasion Guard

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

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

For tightening torque refer to 64 12 4AZ in 64 12 INDEPENDENT HEATER .

Fig 5: Plug Connection, Screws And Bracket

Courtesy of BMW OF NORTH AMERICA, INC.

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 .

NOTE:

FUEL PUMP 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