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Dynamic lateral support on the dynamic seat, function - GF91.25-P-2013SX

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

Fig 1: Dynamic Seat Lateral Support Function Diagram
G07601670Courtesy of MERCEDES-BENZ USA

Function requirements 

Function 

The dynamic lateral support function is switched on or off via the front central operating unit. The respective display occurs via the COMAND display.

The respective front dynamic seat control unit creates a base pressure in the air cushions and furthermore provides better lateral support when cornering by briefly increasing the pressure in the outer curve air cushions.

This essentially happens as a function of the current vehicle speed and the lateral acceleration.

The intensity and speed of the filling can be set via the front central operating unit.

Function abort 

If important information on vehicle speed and lateral acceleration is not received for 2 s while the function is active, the dynamic lateral support is deactivated. It then either has to be activated manually or it becomes active automatically after switching on the ignition again.

  COMAND controller unit, component description A40/3
Model 221 without code (498) Japan version and without code (494) USA version
GF82.85-P-3136SX
Model 221 with code (494) USA version GF82.85-P-3136SXU
Model 221 with code (498) Japan version GF82.85-P-3136SXJ
  Cockpit central display, component description A40/8
Model 221
GF54.30-P-6100SX
  Front central operating unit, component description A40/9
Model 221
GF54.21-P-4500SX
  Pneumatic pump for dynamic seat, component description M40/1 GF91.25-P-5204SX 
  Dynamic seat control unit, component description N32/19, N32/22 GF91.25-P-5202SX 
  Description of components in ESP control unit N47-5 GF42.45-P-5118SX
  Electronic ignition/starter switch control unit (EIS) component description N73 GF80.57-P-6000SX
  Central gateway control unit, component description N93 GF54.21-P-4170SX