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Heated seats (HS), function - GF91.30-P-0003S

MODEL 220 with CODE (872) Electrically heated left and right rear seats 

MODEL 220 with CODE (873) Heated left and right front seats 

Fig 1: Identifying Heated Seats (HS) Function
G04851640

Front heated seats 

The left/right front heated seats allow the seat cushion and backrest to be heated in two  heating stages.

The heated seats can be controlled with one of the two switches on the left front door control module (N69/1)/right front door control module (N69/2)  . The operating states are indicated by two (three) LED's located above the switches. The resistors are heated by a pulsed voltage (20 - 30 Hz) from the left front seat adjustment control module with memory (N32/1)/right front seat adjustment control module with memory (N32/2)  . The ON/OFF ratio for the voltage is 27 % in heating stage I and 100 % in heating stage II.

Switch-off  can be accomplished either manually by pressing the switch or time controlled  by the associated control module.

Rear heated seats 

(The rear heated seat function is identical to the front heated seats). Control is possible with one (two) switch(es) in the left rear door control module (N69/3)/right rear door control module (N69/4)  . The heater resistors are heated by a pulse voltage from the rear seat control module (N25/6)  (see front heated seats).

  Heating mode, function   GF91.30-P-2003S 
  Terminating heating mode, function   GF91.30-P-2004S 
  Heated seat switch/seat ventilation switch, location/purpose   GF91.30-P-3004S 
  Left front door control module, location/ purpose/design/function   GF72.29-P-4105S
  Right front door control module, location/ purpose/design/function   GF72.29-P-4106S
  Rear door control module, location/purpose/ design/function   GF72.29-P-4102S
  Left front seat adjustment control module with memory, location/purpose   GF91.29-P-2106S 
  Right front seat adjustment control module with memory, location/purpose   GF91.29-P-2107S 
  Rear seat control module, location/purpose/ design/function   GF91.29-P-2108S