GF91.30-P-2002QA Heated Seats Switch-Over Function

GF91.30-P-2002QA Heated Seats Switch-over Function
- with CODE (873) Electrically heated left and right front seats
- with CODE (401a) Front luxury seat, including heated seat and seat ventilation
- as of 2.6.03
- up to 31.5.04

Function requirements:
^ Circuit 15R On or circuit 15 ON
^ The heated seats HS [SIH] are switched on

Manual switch-over 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)).

Manual switch-over 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 again, 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)).

Automatic switch-over via timer control
A timer control has been implemented in the upper control panel control unit (N72/1) for the heated seats HS [SIH]. After switching on heating stage 2, it remains on for 5 min. Next, the system switches to heating stage 1 for 30 min. Afterwards, the heated seats HS [SIH] are switched off automatically.

In vehicles with code (401a) front deluxe seats, incl. seat heating and seat ventilation, the heated seats HS [SIH] are not automatically switched off based on the timer control, but remain active on heating stage 1 until the seat ventilation is switched off.

The different heating stages are implemented through pulsed actuation of the left front seat heated cushions (R13/1) and the left front backrest heated cushions (R13/2) or the right front seat heated cushions (R13/3) and the right front backrest heated cushions (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.