Carefully! Imbalance of the fan impeller. Do not touch fresh air blower rotor -V2-. Physical impact or displacement of the balancing weights attached to the supply fan rotor can lead to imbalance and thus to unsatisfactory operation of the fan.
Unplug connector -3- from fresh air blower -V2-. Unscrew screw -2- if present. Raise tab -4-, turn fan -1- -arrow- and carefully pull downwards.
Installation
Installation in reverse order.
Note: If tongue -4- is damaged/broken, screw in screw -2- (1 Nm). If only fresh air blower -V2- is defective, remove fresh air blower control unit -J126-.
Check function of fresh air blower -V2-.
Removing and installing fresh air blower control unit -J126-
Switch off the ignition and all electrical consumers. Remove screws -2- and remove screen -1- on passenger side. Disconnect connectors -1- and -3-. Remove screws -arrows- (1 Nm).
Attention! Risk of burns. If the fresh air blower with the fresh air blower control unit was operated just prior to removal, it may be hot.
Remove control unit -2- from fresh air blower.
Installation
Installation in reverse order. Check operation of fresh air blower -V2-.