Fresh Air Fan, Eliminating Whistling Noises

In vehicles up to VIN 44G 001 212 If there is a whistling noise when using higher fan stages, - do the following:

- remove parcel shelf and footwell vent from driver's side
- remove air duct from heater housing

- set A/C temperature to 68~F (20~C) or 90~F (32~C)
- press DEFROST button

FRESH AIR FAN, ELIMINATING WHISTLING NOISES:

- check to see if a clamp is mounted on heater flap lever (B) If no, - install new heater flap lever Part No. 443 819 291 E

Work sequence

- remove pull rod (A)
- remove screw and washer
- remove heater flap lever with return spring
- install new heater flap arm
- install return spring (C)
- install washer, screw and pull rod

- install air duct, footwell vent and parcel shelf