Carefully lever out cover "5" on the heater control unit and unscrew screws "7" (1 Nm). Lightly press the latches at the corners of the control unit and slide the heater control unit away from you into the instrument panel. Remove the instrument panel. Remove the spacer (air duct) for defrost heater grilles (2 mounting pins) and a spacer (air duct) middle blower nozzles (2 clamps). Pull the main wiring harness holder and harness out of the heater mount towards you, releasing the wiring harness from the heater clamps. Vehicles with auxiliary resistive heater - release the wiring harness from the clamps on the heater to the left rear. Disconnect the vehicle's left wiring harness connector near the fresh air intake fan. After unscrewing screw "4" (1.5 Nm), remove the left air duct nozzle into the footwell "3". Remove the control unit for the electrical equipment of the Convenience system "J393".
Press the holder "1" of the comfort system electrical equipment control unit at the top outward and pull it out of the support in the direction of the "arrow". Remove the control unit for the cornering and cornering lights "J745". Unscrew the screws "2" (5 Nm). Unscrew the screws "1" and "2" (5 Nm) from the central pipe "3".
The lower part of the heater should be slightly tilted towards you, while pressing down with your hand the shock-absorbing insulation at the air intake opening. The right side of the heater should be lowered down and the heater should be carefully removed.
Installation
Installation is carried out in the reverse order of actions. In this case, the following instructions must be observed. Follow the procedure when installing the heat exchanger.