Installation details of the stepper motor drive for the air circulation mode switching damper
1. The installation details of the stepper motor for the air circulation mode switching damper are shown in the illustration, to which all references in the text refer.
2. Remove the instrument panel (see Chapter Body).
3. Remove the front passenger airbag module (see Chapter Body).
4. Disconnect the contact connector of the electrical wiring (4) of the stepper motor (M39).
5. Loosen the mounting screws (3) and remove the stepper motor assembly (M39) from the air conditioner heater/evaporator housing (1).
(Information copied from the website: MERCEDESMAN.ru)
6. Installation is carried out in reverse order.