Component Description For Driver Seat Control Unit - GF91.29-P-5231GW
Model 463
as of model year 2013
The component description for the driver seat control unit (N32/1) describes a left-hand drive vehicle. Right-hand drive vehicles are to be observed mirror inverted with regard to the designations of the electric components.
Shown on model 463 as of 03.04.2018 except model 463.342
Shown on model 463 up to 02.04.2018
Location
The driver seat control unit is located at the bottom of the driver seat frame.
Tasks
The driver seat control unit is responsible for the following tasks:
- Control of the seat adjustment
- Control of the steering column adjustment
- Storing/moving to memory settings for seat and steering column
- Control of the easy entry/exit feature
- Actuation of the crash-active easy exit function
- Control of the seat climate control (model 463 (except 463.342), model 463.342 with code H10 (Seat heating for driver and front passenger))
The tasks are subdivided as follows:
- Reading in of sensors and signals
- Evaluation of input factors
- Actuation of components
- Transmitting signals
Reading in of sensors and signals
The input factors are read in via the following connections:
- Direct line
- Interior CAN (CAN B)
Direct line
For model 463 as of 03.04.2018 except model 463.342, the signals of the following sensors are read in via direct lines:
- Steering column in/out Hall sensor (M20/1b1)
- Steering column up/down Hall sensor (M20/2b1)
- Seat fore/aft adjustment Hall sensor, driver seat (M27/1 b1)
- Head restraint adjustment Hall sensor, driver seat (M27/4t>1)
- Backrest inclination Hall sensor, driver seat (M27/5b1)
- Seat cushion length adjustment Hall sensor, driver seat (M27/8b1)
- Seat inclination adjustment Hall sensor, driver seat (M27/9b1)
- Seat height adjustment Hall sensor, driver seat (M27/10b1)
- Left front seat seat cushion side bolster heater pad temperature sensor (R13/11 b1) (with code PA9 (Active Multicontour Seat Package))
- Left front seat seat backrest side bolster heater pad temperature sensor (R13/12b1) (with code PA9 (Active Multicontour Seat Package))
For model 463 up to 02.04.2018 except model 463.342 the signals of the following sensors are read in via direct lines:
- Steering column in/out Hall sensor
- Steering column up/down Hall sensor
- Seat fore/aft adjustment Hall sensor, driver seat
- Driver seat height adjustment Hall sensor (M27/2b1)
- Inclination adjustment Hall sensor, driver seat (M27/3b1)
- Head restraint adjustment Hall sensor driver seat
- Backrest inclination Hall sensor driver seat
For model 463.342, the signals of the following sensors are read in via direct lines:
- Steering column in/out Hall sensor
- Steering column up/down Hall sensor
Interior CAN
The driver seat control unit reads in the following signals via interior CAN, among other things:
- Seat adjustment request
- Steering column adjustment request
- Request for storing/moving to memory position
Evaluation of input factors
The read in input factors are evaluated by the driver seat control unit. The motors for seat and steering column adjustment are actuated via integrated relays.
Actuation of components
For model 463 as of 03.04.2018 except model 463.342, the following component parts are actuated via direct lines:
- Left front seat cushion seat ventilation motors (M18/9) (with code PA9 (Active Multicontour Seat Package))
- Left front seat backrest seat ventilation motors (M18/10) (with code PA9 (Active Multicontour Seat Package))
- Steering column in/out adjustment motor (M20/1)
- Steering column up/down adjustment motor (M20/2)
- Driver seat fore/aft adjustment motor (M27/1)
- Driver seat head restraint adjustment motor (M27/4)
- Driver seat backrest inclination adjustment motor (M27/5)
- Driver seat cushion length adjustment motor (M27/8)
- Driver seat inclination adjustment motor (M27/9)
- Driver seat height adjustment motor (M27/10)
- Left front seat seat cushion side bolster heater pad (R13/11) (with code PA9 (Active Multicontour Seat Package)) or left front sitting surface heater pad (R13/1) (except code PA9 (Active Multicontour Seat Package))
- Left front seat seat backrest side bolster heater pad (R13/12) (with code PA9 (Active Multicontour Seat Package)) or left front seat backrest heater pad (R13/2) (except code PA9 (Active Multicontour Seat Package))
For model 463 up to 02.04.2018 except model 463.342, the following component parts are actuated via direct lines:
- Left front seat cushion seat ventilation motors (with code S50 (Seat ventilation for driver and front passenger seat) or code PA1 (Seat Comfort Package))
- Left front seat backrest seat ventilation motors (with code S50 (Seat ventilation for driver and front passenger seat) or code PA1 (Seat Comfort Package))
- Steering column in/out adjustment motor
- Steering column up/down adjustment motor
- Driver seat fore/aft adjustment motor
- Driver seat height adjustment seat adjustment motor (M27/2)
- Driver seat inclination adjustment motor (M27/3)
- Driver seat head restraint adjustment motor
- Driver seat backrest inclination adjustment motor
- Left front seat sitting surface heated cushion
- Left front backrest heated cushion
Model 463 (except 463.342)
as of model year 2013 up to model year 2019
The driver seat control unit supplies the driver seat lumbar support adjustment control unit (N32/23) with power.
For model 463.342, the following component parts are actuated via direct lines:
- Steering column in/out adjustment motor
- Steering column up/down adjustment motor
- Left front sitting surface heater pad (with code H10 (Seat heating for driver and front passenger))
- Left front seat backrest heater pad (with code H10 (Seat heating for driver and front passenger))
Transmitting signals
The driver seat control unit sends signals via the following connections:
- Driver seat LIN (LIN B18) (model 463 as of 03.04.2018 except model 463.342)
- Interior CAN
Driver seat LIN (model 463 as of 03.04.2018 except model 463.342) The driver seat control unit transmits, among other things, the "Switch on seat heater" request via the driver seat LIN to the driver seat heater control unit (N25/5).
Interior CAN
The driver seat control unit sends the following signals via interior CAN, among other things:
- Request for acknowledge tone after storage in memory
- Request for storing/occupying memory position
- Seat heater status
- Seat ventilation status (with code S50 (Seat ventilation for driver and front passenger seat) or code PA1 (Seat Comfort Package) or code PA9 (Active Multicontour Seat Package))
Variants
There are no variants for the hardware of the driver seat control unit. The country or left-hand drive vehicle/right hand drive vehicle allocation is software coded.
| Wiring diagram of driver-side seat control unit | Model 463 (except 463.342) as of model year 2019 | PE91.29-P-2104-97ZHA | |
| Model 463 (except 463.342) as of model year 2013 up to model year 2019 | PE91.29-P-2104-97ZGA | ||
| Wiring diagram of driver seat control unit | Model 463.342 as of model year 2017 | PE91.29-P-2114-97ZBA |