S 500 4MATIC (220.184) V8-5.0L (113.966) (2003)
Component Identification
The rear air conditioning air distribution flap actuator motor (M16/22) is located on the side of the rear A/C housing below the center console.
Electronic Stepper Motor Control Module - N22/5
Center console
Defroster Vent Flap Actuator Motor, Left - M16/13