Switching on heated seats, function - GF91.30-P-2000B

MODEL 210 with CODE (401a) Front seat ventilation 

Fig 1: Identifying Front HS Seat Ventilation Control Module, Left And Right Front HS Ventilation Switch

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Function prerequisite: 

• Circuit 15R ON or circuit 15 ON

Function sequence 

1. Press top half of left front HS and seat ventilation switch (N25/7s1)/ right-front HS and seat ventilation switch (N25/7s2) once.

   The heated seat is switched on - stage 2.

   Heating stage 2 is indicated by both red LEDs next to the switch coming on.

2. Press top half of N25/7s1/ N25/7s2 again.

   The heated seat is switched back to stage 1.

   Heating stage 1 is indicated by one of the two red LEDs next to the switch coming on.

3. The heated seat control module controls the power to the heater elements in the seat depending on the heating stage selected.
4. The heating wire in the heating elements is heated up by the electricity going through.