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

MODELS 211.0/2 with CODE (401) Front deluxe seats, incl. seat heating and seat ventilation with CODE (872) Electrically heated left and right rear seats with CODE (873) Heated left and right front seats 

Vehicles without code (401) Front deluxe seats, incl. seat heating and seat ventilation and without code (872) Electrically heated left and right rear seats 

Fig 1: Heated Seats Communication Diagram - Without Code (401)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 2: Heated Seats Communication Diagram - With Code (401)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Vehicles with code (401) Front deluxe seats, incl. seat heating and seat ventilation and with code (872) Electrically heated left and right rear seats 

Function of heated driver or front passenger seats 

The heated seats HS [SIH] heats the seat cushions and the backrests of the driver or front passenger seat via the integrated heated cushions (R13/1, R13/2 or R13/3, R13/4). The heat output can be adjusted in three heating stages.

The different heating stages are achieved by means of pulsed actuation of the heated cushions (R13/1, R13/2 or R13/3, R13/4). The heated seats HS [SIH] are operated via the left front HS [SIH] switch (N72/1s10) or the right front HS [SIH] switch (N72/1s11), which are read in by the upper control panel control unit (N72/1). In the process, the function conditions are displayed via three red LEDs in the left front HS [SIH] switch (N72/1s10) or in the right front HS [SIH] switch (N72/1s11).

Function of the left or right rear seat heater (with code (872) Electrically heated left and right rear seats) 

The heated seats HS [SIH] heat up the seat cushions, backrests, and the side pieces of the left or right rear seats via the integrated heated cushions (R13/5, R13/6, R13/9 or R13/7, R13/8, R13/10). The heat output can be adjusted in three heating stages.

The different heating stages are achieved by means of pulsed actuation of the heated cushions (R13/5, R13/6, R13/9 or R13/7, R13/8, R13/10).

The heated seats HS [SIH] of the left rear seat are operated via the left rear HS [SIH] switch (S51/3s2), which is read in by the left rear door control unit (N69/3) via the switching bus (S BUS). The heated seats HS [SIH] of the right rear seat are operated via the right rear HS [SIH] switch (S51/4s2), which is read in by the right rear door control unit (N69/4) via the switching bus (S BUS). In the process, the function conditions are displayed via three LEDs in the left rear HS [SIH] switch (S51/3s2) or in the right rear HS [SIH] switch (S51/4s2).