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Home >> BMW >> 2013 >> 740Lxi >> Repair and Diagnosis >> External Pages >> Different car >> Section 985 (Heating And Air Conditioning - Repair -- F31) >> Auxiliary. Heater With Control Elements >> 64 12 670 Replacing electric auxiliary heater - front-

64 12 670 Replacing electric auxiliary heater - front-

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Necessary preliminary tasks: 

Remove air duct (1) and sound insulation (2) in direction of arrow.

Fig 1: Removing Air Duct And Sound Insulation
G10097427Courtesy of BMW OF NORTH AMERICA, INC.

Fold up the carpet (3) as shown.

Slacken nut (1).

Remove ground cable (2).

Fig 2: Removing Ground Cable
G10098890Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Mark position before removing holder (2).

Release screws (1).

Take off holder (2).

Fig 3: Identifying Screws And Holder
G10098868Courtesy of BMW OF NORTH AMERICA, INC.

Unclip air duct (1) downward at retaining clasp (2).

Pull off air duct (1) in direction of arrow.

Installation note: 

Air duct (3) must be correctly engaged in duct (4).

Fig 4: Pulling Off Air Duct
G10098869Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connections (1) and (2).

Release screws (3).

Auxiliary heater (4) in direction of arrow.

Fig 5: Disconnecting Auxiliary Heater
G10098893Courtesy of BMW OF NORTH AMERICA, INC.