A186 Seat module, front right

Plug connector overview

Number	X-pin, colour	Description
X275	8-pin, black	Component connector Seat module, front right
X13532	26-pin, black	Component connector Seat module, front right
X18178	5-pin, black	Component connector Seat module, front right
X13536	5-pin, natural	Component connector Seat module, front right
X13896	4-pin, green	Component connector Seat module, front right
X13534	20-pin, black	Component connector Seat module, front right
X13898	4-pin, blue	Component connector Seat module, front right
X13902	4-pin, green	Component connector Seat module, front right
X13900	4-pin, green	Component connector Seat module, front right

Pin assignments X275

Pin	Type	Description / Signal type	Connection / Measuring notes
1		Not used

2	M	Ground	Ground point

3		Not used

4		Not used

5	A/E	Bus signal	CAN-bus connector

6	A/E	Bus signal	CAN-bus connector

7	E	Supply, terminal 30	Fuse distribution box

8	M	Ground	Ground point

Pin assignments X13532

Pin	Type	Description / Signal type	Connection / Measuring notes
1	A	Signal, fan motor	Fan motor, seat cushion

2	A	Positive supply, fan motor	Fan motor, seat cushion

3	M	Ground, fan motor	Fan motor, seat cushion

4	M	Lumbar support motor, negative	Motor, lumbar support, front right

5	M	Valve block for lumbar support, negative	Valve block, front right lumbar support

6		Not used

7		Not used

8		Not used

9		Not used

10	E	Signal, pressure sensor	Front passenger's active seat

11	E	Signal, pressure sensor	Front passenger's active seat

12		Not used

13		Not used

14	A	Signal, fan motor	Fan motor, backrest

15	A	Positive supply, fan motor	Fan motor, backrest

16	M	Ground, fan motor	Fan motor, backrest

17	A	Signal, valve 3	Valve block, front right lumbar support

18	A	Signal, valve 4	Valve block, front right lumbar support

19	A	Signal, valve 1	Valve block, front right lumbar support

20	A	Signal, valve 2	Valve block, front right lumbar support

21	A	Lumbar support motor, positive	Motor, lumbar support, front right

22		Not used

23	M	Signal, solenoid valve, negative	Front passenger's active seat

24	A	Signal, solenoid valve, positive	Front passenger's active seat

25	M	Motor signal, hydraulics negative	Front passenger's active seat

26	A	Motor signal, hydraulics positive	Front passenger's active seat

Pin assignments X18178

Pin	Type	Description / Signal type	Connection / Measuring notes
1	A	Signal, rapid heating area	Seat cushion heating, front right

2	E	Signal, heating area sensor	Seat cushion heating, front right

3	E	Signal, heating area sensor	Seat cushion heating, front right

4	A	Signal, rapid heating area	Seat cushion heating, front right

5	A	Signal, remaining heating area	Seat cushion heating, front right

Pin assignments X13536

Pin	Type	Description / Signal type	Connection / Measuring notes
1	A	Signal, rapid heating area	Seat backrest heating, front right

2	E	Signal, heating area sensor	Seat backrest heating, front right

3	E	Signal, heating area sensor	Seat backrest heating, front right

4	A	Signal, rapid heating area	Seat backrest heating, front right

5	A	Signal, remaining heating area	Seat backrest heating, front right

Pin assignments X13896

Pin	Type	Description / Signal type	Connection / Measuring notes
1	A	Signal, motor, seat depth adjustment	Motor, seat depth adjustment, front right

2	E	Hall sensor signal, seat depth adjustment	Motor, seat depth adjustment, front right

3	A	Signal, motor, seat depth adjustment	Motor, seat depth adjustment, front right

4	E	Hall sensor signal, seat depth adjustment	Motor, seat depth adjustment, front right

Pin assignments X13534

Pin	Type	Description / Signal type	Connection / Measuring notes
1	A	Signal, motor, seat backrest adjustment	Motor, backrest angle adjustment, front right

2	E	Hall sensor signal, seat backrest adjustment	Motor, backrest angle adjustment, front right

3	E	Hall sensor signal, seat backrest adjustment	Motor, backrest angle adjustment, front right

4	E	Hall sensor signal, backrest head adjustment	Motor, backrest head adjustment, front right

5	E	Hall sensor signal, backrest head adjustment	Motor, backrest head adjustment, front right

6		Not used

7		Not used

8	E	Hall sensor signal, head restraint adjustment	Motor, head restraint adjustment, front right

9	E	Hall sensor signal, head restraint adjustment	Motor, head restraint adjustment, front right

10	E	Hall sensor signal, backrest width adjustment	Motor, backrest width adjustment, front right

11	E	Hall sensor signal, backrest width adjustment	Motor, backrest width adjustment, front right

12	A	Signal Motor, backrest width adjustment, front right	Motor, backrest width adjustment, front right

13	A	Signal, motor, seat backrest adjustment	Motor, backrest angle adjustment, front right

14	A	Signal, motor, backrest head adjustment	Motor, backrest head adjustment, front right

15	A	Signal, motor, backrest head adjustment	Motor, backrest head adjustment, front right

16		Not used

17		Not used

18	A	Signal, motor, head restraint adjustment	Motor, head restraint adjustment, front right

19	A	Signal, motor, head restraint adjustment	Motor, head restraint adjustment, front right

20	A	Signal Motor, backrest width adjustment, front right	Motor, backrest width adjustment, front right

Pin assignments X13898

Pin	Type	Description / Signal type	Connection / Measuring notes
1	A	Signal, motor, seat tilt adjustment	Motor, seat tilt adjustment, front right

2	E	Hall sensor signal, seat angle adjustment	Motor, seat tilt adjustment, front right

3	A	Signal, motor, seat tilt adjustment	Motor, seat tilt adjustment, front right

4	E	Hall sensor signal, seat angle adjustment	Motor, seat tilt adjustment, front right

Pin assignments X13902

Pin	Type	Description / Signal type	Connection / Measuring notes
1	A	Signal, motor, seat forward/backward adjustment	Motor, seat forward/backward adjustment, front right

2	E	Hall sensor signal, seat forward/backward adjustment	Motor, seat forward/backward adjustment, front right

3	A	Signal, motor, seat forward/backward adjustment	Motor, seat forward/backward adjustment, front right

4	E	Hall sensor signal, seat forward/backward adjustment	Motor, seat forward/backward adjustment, front right

Pin assignments X13900

Pin	Type	Description / Signal type	Connection / Measuring notes
1	A	Signal Motor, seat height adjustment, front right	Motor, seat height adjustment, front right

2	E	Hall sensor signal, seat height adjustment	Motor, seat height adjustment, front right

3	A	Signal Motor, seat height adjustment, front right	Motor, seat height adjustment, front right

4	E	Hall sensor signal, seat height adjustment	Motor, seat height adjustment, front right