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Home >> Mercedes Benz >> 2003 >> CLK55 >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Seats, Restraint Systems -- Basic Knowledge -- 209 Chassis >> Basic Knowledge >> Heated seats switch-on function - GF91.30-P-2000 >> Heated seats switch-on function - GF91.30-P-2000QA

Heated seats switch-on function - GF91.30-P-2000QA

MODELS 209.3 as of 2.6.03 up to 31.5.04, 209.4 up to 31.5.04 

with CODE (873) Electrically heated left and right front seats 

with CODE (401a) Front luxury seat, incl. heated seat and seat ventilation 

Function prerequisites 

Function with code (873) heated seats for left and right front seats 

The heated seats HS [SIH] have two heating stages.

By pushing the left front HS [SIH]/seat ventilation switch (N72/1s28) or the right front HS [SIH]/seat ventilation switch (N72/1s29) down, heating stage 2 of the heated seats HS [SIH] is activated (both red LEDs in the left front HS [SIH]/seat ventilation switch (N72/1s28) or in the right front HS [SIH]/seat ventilation switch (N72/1s29) are illuminated).

By pushing the left front HS [SIH]/seat ventilation switch (N72/1s28) or the right front HS [SIH]/seat ventilation switch (N72/1s29) up, the system is switched to stage 1 (one red LED is illuminated in the left front HS [SIH]/seat ventilation switch (N72/1s28) or in the right front HS [SIH]/seat ventilation switch (N72/1s29)).

Function with code (401a) front deluxe seats, incl. seat heating and seat ventilation 

The heated seats HS [SIH] have two heating stages.

By pushing the left front HS [SIH]/seat ventilation switch (N72/1s28) or the right front HS [SIH]/seat ventilation switch (N72/1s29) up one time, heating stage 2 of the heated seats HS [SIH] is activated (both red LEDs in the left front HS [SIH]/seat ventilation switch (N72/1s28) or in the right front HS [SIH]/seat ventilation switch (N72/1s29) are illuminated).

By pushing the left front HS [SIH]/seat ventilation switch (N72/1s28) or the right front HS [SIH]/seat ventilation switch (N72/1s29) up, the system is switched to stage 1 (one red LED is illuminated in the left front HS [SIH]/seat ventilation switch (N72/1s28) or in the right front HS [SIH]/seat ventilation switch (N72/1s29)).

The left front seat heated cushion (R13/1) and the left front backrest heated cushion (R13/2) or the right front seat heated cushion (R13/3) and the right front backrest heated cushion (R13/4) are actuated by the upper control panel control unit (N72/1) depending on the heating stage that is set.

IMPORTANT The different heating stages are implemented through pulsed actuation of the heated cushions (R13/1, R13/2, R13/3, and R13/4). In heating stage 2, the heated cushions (R13/1, R13/2, R13/3, and R13/4) are actuated with 100% heat output, in heating stage 1 with 33% heat output.

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