Pneumatic pump for dynamic seat, component description - GF91.25-P-5204SX

MODEL 216.3, 221.0 /1 with CODE (432) Left and right dynamic multicontour seat up to Model Year 8 

Shown on model 221.0 

Fig 1: Locating Pneumatic Pump For Dynamic Seat Control

Courtesy of MERCEDES-BENZ USA

Location 

The pneumatic pump is located below the reservoir (1) on the left side of the trunk behind the paneling.

Task of the pneumatic pump 

• Pressure supply of the dynamic seat system
• Actuation of the solenoid valve to expel compression moisture in the reservoir
• Automatic cutout after 60 s of continuous operation
• Leakage recognition of the pneumatic system
• Pressure monitoring of the reservoir by means of a sensor

Discrete inputs 

• Circuit 31
• Circuit 30

CAN signals 

The pneumatic pump is an interior CAN participant.