Heated seats switch-on function - GF91.30-P-2000SK
MODEL 171.4 with CODE (873) Electrically heated left and right front seats
Function prerequisites:
- Terminal 15R ON or
- circuit 15 ON
The different heating stages are realized by pulsed actuation of the heated cushions (R13/1, R13/2, R13/3 and R13/4). The heating times can be programmed via diagnosis.
Function driver side
Pressing the left HS switch (N72/1s10) is read in by the upper control panel control unit (N72/1) and relayed to the Front HS, head area ventilation and steering wheel heater control unit (N25/7) via the Controller Area Network Bus class B (interior) (CAN-B). Depending on the number of times the left HS switch (N72/1s10) has been pressed, this switches the left front seat heated cushion (R13/1) and the left front backrest heated cushion (R13/2) to the relevant heating stage.
Function passenger side
Pressing the right HS switch (N72/1s11) is read in by the upper control panel control unit (N72/1) and relayed to the front HS, head area ventilation and steering wheel heater control unit (N25/7) via the CAN-B. Depending on the number of times the right HS switch (N72/1s10) has been pressed, this switches the right front seat heated cushion (R13/3) and the right front backrest heated cushion (R13/4) to the relevant heating stage.
| Actuation of left HS switch (N72/1s10) and right HS switch (N72/1s11) | Actuated Heating stage | Actuated Heating capacity | Function display in left HS switch (N72/1s10) and right HS switch (N72/1s11) |
|---|---|---|---|
| Press once | Heat stage 3 | approx. 90 % | 3 red LEDs |
| Press twice | Heating stage 2 | approx. 60 % | 2 red LEDs |
| Press three times | Heating stage 1 | approx. 30 % | 1 red LED |
| Press four times | Heated seats (HS) off | - | none |
| Press five times | Heat stage 3 | approx. 90 % | 3 red LEDs |
| Upper control panel control unit, location/task/ design/function | GF54.21-P-4105SK |
| Electronic ignition switch control unit, location/purpose | GF80.57-P-4120SK |
| Front heated seat switch, location/task | GF91.30-P-3000SK |
| Heated seats/head area ventilation/steering wheel heater control unit, location/task | GF91.30-P-3008SK |