Remove electric auxiliary heater

Preliminary works 

• DEACTIVATE the 48 v electrical system.
• Disconnect all battery EARTH LEADS .
• Remove the rear passenger compartment air conditioning CONTROL PANEL  (integrated automatic heating/air conditioning system with 4-zone control).
• Remove the rear VENTILATION GRILLE .
• Remove the rear VENTILATION GRILLE  (air conditioning with 4-zone control).
• Remove the rear center console TRIM .
• Remove the center armrest STORAGE COMPARTMENT .
• Remove the center ARMREST .
• Remove the front storage compartment TRIM .
• Remove the center console TRIM .
• Remove CUPHOLDER .
• Remove the pedal mechanism TRIM PANEL .
• Remove the right footwell TRIM .
• Remove the CENTER CONSOLE .
• Remove the right instrument panel SIDE PANEL .
• Remove the right instrument panel FINISHER .
• Remove the radio operating unit and the air conditioning CONTROL PANEL .
• Remove HEAD UNIT HIGH (HU-H).
• Remove the instrument panel SPEAKER TRIM .
• Remove the instrument panel MID-RANGE SPEAKER .
• Remove both inner front door sill COVER STRIPS .
• Remove the left a-pillar footwell SIDE TRIM PANEL .
• Remove the right-hand a-pillar footwell side TRIM PANEL .
• Remove the left and right a-pillar TRIM PANEL .
• Remove the left instrument panel SIDE PANEL .
• Remove the light OPERATING UNIT .
• Remove the left instrument panel FINISHER .
• Remove CENTRAL INFORMATION DISPLAY (CID).
• Remove the left fold-down COMPARTMENT .
• Remove the steering wheel/sports steering wheel AIRBAG UNIT .
• Remove the M sports steering wheel AIRBAG UNIT .
• Remove the STEERING WHEEL .
• Remove steering lower section column SHROUD .
• Remove steering upper section column SHROUD .
• Remove the steering column SWITCH CLUSTER (SZL).
• Remove the INSTRUMENT CLUSTER (KOMBI).
• Remove instrument PANEL TRIM .

• Release the nut (1)  and remove the ground cable (2)  .

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• Unlock plug connection (1)  and disconnect.
• Disengage air duct (2)  downwards and remove it from the heating and air-conditioning unit.

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• Unlock and disconnect plug connections (1)  .
• Unscrew the bolts (2)  and remove the holder (3)  .

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• Loosen screws (1)  .
• Pull out electric auxiliary heater (2)  from heating and air-conditioning unit (3)  .

  Courtesy of BMW OF NORTH AMERICA, INC.