Seat Heater Control Unit, Component Description - GF91.30-P-5214FR
Model 257, 290 up to Model year 2021 with code 401 (Climatised front seats) except code 275 (Memory Package (driver's seat, steering column and mirror)) except code 278 (Fully electric front seats)
Model 257, 290 up to Model year 2021 with code 872 (Left and right rear seat heating)
Model 257, 290 up to Model year 2021 with code 873 (Left and right driver's seat heating) except code 275 (Memory Package (driver's seat, steering column and mirror)) except code 278 (Fully electric front seats)
Model 257, 290 up to Model year 2021 with code 902 (Seat heater Plus for driver and front passenger)
Shown on left-hand drive vehicle with code 902 (Seat heater Plus for driver and front passenger)
Location
The seat heater control unit is located on the seat frame of each seat.
Task
The driver seat heater control unit communicates over the driver seat LIN (LIN B18) with the driver seat control unit (N32/1).
Depending on the request involved, the driver seat heater control unit actuates the following heater pads directly:
- Left front seat cushion heater pad (R13/1)
- Left front seat backrest heater pad (R13/2)
For temperature control of the seat heater, the driver seat heater control unit reads in the signals from the following temperature sensors directly:
- Left front seat cushion heater pad temperature sensor (R13/1b1)
- Left front backrest heater pad temperature sensor (R13/2b1)
The front passenger seat heater control unit communicates over the front passenger seat LIN (LIN B19) with the front-passenger seat control unit (N32/2).
Depending on the request involved, the front passenger seat heater control unit actuates the following heater pads directly:
- Right front seat cushion heater pad (R13/3)
- Left front seat backrest heater pad (R13/4)
For temperature control of the seat heater, the front passenger seat heater control unit reads in the signals from the following temperature sensors directly:
- Right front seat cushion heater pad temperature sensor (R13/3b1)
- Right front backrest heater pad temperature sensor (R13/4b1)
With code 872 (Seat heating in rear), shown on Model 257.3
Location
The rear seat heater control unit is located at the left in the trunk behind the cover.
Task
The rear seat heater control unit communicates over the heater LIN (LIN B28) with the rear SAM control unit (N10/8).
The rear seat heater control unit actuates the following heater pads directly depending on the request involved:
- Left rear seat surface heater pad (R13/5)
- Left rear backrest heater pad (R13/6)
- Right rear seat surface heater pad (R13/7)
- Right rear backrest heater pad (R13/8)
With code 401 (Seat climate control for driver and front passenger) or code 873 (Seat heating for driver and front passenger), except code 275 (Memory Package) and except code 278 (Fully electric front seats)
Location
The front seat heater/seat ventilation control unit is located at the seat frame of the front passenger seat.
Task
The front seat heating/seat ventilation control unit communicates over the heater LIN with the rear SAM control unit.
Depending on requests the front seat heater/seat ventilation control unit actuates the following components directly:
- Left front seat cushion seat ventilation motors (M18/9) (with CODE 401 (Seat climate control for driver and front passenger))
- Left front backrest seat ventilation motors (M18/10) (with CODE 401 (Seat climate control for driver and front passenger))
- Right front seat cushion seat ventilation motors (M18/11) (with CODE 401 (Seat climate control for driver and front passenger))
- Right front backrest seat ventilation motors (M18/12) (with CODE 401 (Seat climate control for driver and front passenger))
- Left front seat cushion heater pad
- Left front seat backrest heater pad
- Right front seat cushion heater pad
- Right front seat backrest heater pad
- Left front seat adjustable seat cushion length heater pad (R24)
- Right front seat adjustable seat cushion length heater pad (R24/1)
| Wiring diagram for seat heater control unit | Model 257, 290 up to Model year 2021 with code 902 (Seat heater Plus for driver and front passenger) Driver seat heater control unit | PE91.30-P-2104-97XBA | |
| Model 257, 290 up to Model year 2021 with code 902 (Seat heater Plus for driver and front passenger) Front passenger seat heater control unit | PE91.30-P-2104-97XBB | ||
| Wiring diagram for rear seat heater control unit | Model 257, 290 up to Model year 2021 with code 872 (Left and right rear seat heating) | PE91.30-P-2101-97XBA | |
| Wiring diagram for seat heater and seat ventilation control unit | Model 257, 290 up to Model year 2021 with code 401 (Climatised front seats) except code 275 (Memory Package (driver's seat, steering column and mirror)) except code 278 (Fully electric front seats) Model 257, 290 up to Model year 2021 with code 873 (Left and right driver's seat heating) except code 275 (Memory Package (driver's seat, steering column and mirror)) except code 278 (Fully electric front seats) | PE91.30-P-2102-97XBA |