Overview of system components for seat heaters (SIH) location/task/design/function - GF91.30-P-9998T
MODEL 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
| Heated seats/seat ventilation switch location/task | On vehicles with code (873) Heated left and right front seats or with code (401) Front deluxe seats, incl. seat heating and seat ventilation | GF91.30-P-3004T |
| Heated rear seat switch, location/task | For vehicles with code (872) Electrically heated left and right rear seats | GF91.30-P-3006T |
| Upper control panel control unit, location/task/design/function | Model 211.0 | GF54.21-P-4105T |
| Model 211.2 | GF54.21-P-4105TS | |
| Heated seats/seat ventilation control unit, location/task | In vehicles with code (401) Front comfort seats, including seat heater and with code (872) Electrically heated left and right rear seats or in vehicles up to 31.5.05 with code (873) Heated left and right front seats | GF91.30-P-3005T |
| Front passenger-side SAM control unit with fuse and relay module, location/task/design | On vehicles as of 1.6.05 with code (873) Heated left and right front seats and without code (401) Front comfort seats, incl. seat heating and seat ventilation and without code (872) Electrically heated left and right rear seats | GF54.21-P-4111T |
| Electronic ignition switch control unit, location/task | GF80.57-P-4120T | |
| Door control unit rear, location/task/function | GF72.29-P-4117T | |
| Seat heater (SIH) function description table of contents | GF91.30-P-0998T |