Ventilation mode function - GF91.30-P-2005T
MODEL 211.0/2/6 with CODE (401) Front luxury seat, incl. heated seat and seat ventilation
Function requirements
- Circuit 15R ON
- Circuit 15 ON
Function driver side
The actuation of the left front seat ventilation switch (N72/1s13) is read in by the upper control panel control unit (N72/1) and forwarded via CAN interior to the HS and seat ventilation control unit (N25/7).
The HS and seat ventilation control unit (N25/7) issues a control voltage, depending on the current power stage, to the blower regulator for left front seat ventilation (N29/5). It controls, depending on the control voltage, the supply voltage of the left front seat cushion ventilation motor group (M18/9) and the left front backrest ventilation motor group (M18/10).
Function passenger side
The actuation of the right front seat ventilation switch (N72/1s14) is read in by the upper control panel control unit (N72/1) and forwarded via CAN interior to the HS and seat ventilation control unit (N25/7).
The HS and seat ventilation control unit (N25/7) issues a control voltage, depending on the current power stage, to the blower regulator for right front seat ventilation (N29/6). It controls, depending on the control voltage, the supply voltage of the right front seat cushion ventilation motor group (M18/11) and the right front backrest ventilation motor group (M18/12).
Operation and function indicators of the seat ventilation are summarized in the table given below.
Switch over with switch (explanation at driver-side seat ventilation)
By pressing the left front seat ventilation switch (N72/1s13), it is possible to manually switch
- over from ventilation stage 3 to ventilation stage 2.
- over from ventilation stage 2 to ventilation stage 1.
- off the seat ventilation.
The HS and seat ventilation control unit (N25/7) reduces the control voltage to the left front seat ventilation blower regulator (N29/5) accordingly, and thus it reduces the supply voltage of the left front seat cushion ventilation motor group (M18/9) and the left front backrest ventilation motor group (M18/10).
Operation and function indicators of the seat ventilation are summarized in the table given below.
Switching on seat ventilation in the case of comfort opening
When opening the windows and sliding roof with the remote control (comfort opening) or by Keyless Go, the seat ventilation is switched on to ventilation stage 3 irrespective of the function conditions.
When closing, the seat ventilation is switched off again.
| Switch position | Ventilation | Control voltage to blower regulator | Function display |
|---|---|---|---|
| press once | Ventilation stage 3 | 4,5 Volt | 3 LEDs blue |
| press twice | Ventilation stage 2 | 3,3 Volt | 2 LEDs blue |
| press three times | Ventilation stage 1 | 2,0 Volt | 1 LED blue |
| press four times | Seat ventilation off | less than 1.0 Volt | None |
| Press five times | Ventilation stage 3 | 4,5 Volt | 3 LEDs blue |
| Heated seats/seat ventilation switch location/task | GF91.30-P-3004T | |
| Seat ventilation blower regulator, location/task/design/function | GF91.30-P-3102T | |
| Front seat ventilation motors, location/task/design/function | GF91.30-P-3100T | |
| Heated seats/seat ventilation control unit, location/task | GF91.30-P-3005T | |
| Upper control panel control unit, location/task/design/function | Models 211.0/6. | GF54.21-P-4105T |
| Model 211.2. | GF54.21-P-4105TS |