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Volume 5

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LOCATION:    15.2b Electric Seat Adjustment (ESA)   >   11 Diagnosis - Function Test


Diagnosis - Function Test

Diagnosis - Function Test Component Locations  

 

Test step/Test sequence Test condition Nominal value Possible cause/Remedy 1)
1.0 Seat fore/aft adjustment Ignition: ON
Press fore/aft switch (S91s1, S92s1)
Seat adjusts forward/backward. Left seat Right seat
23 1.0 23 24.0
23 2.0 23 25.0
23 3.0 23 26.0
23 4.0 23 27.0
23 5.0 23 28.0
2.0 Front seat height front adjustment Ignition: ON
Press front raise/lower switch (S91s3, S92s3)
Front of seat adjusts up/down. Left seat Right seat
23 1.0 23 24.0
23 2.0 23 25.0
23 6.0 23 29.0
23 7.0 23 30.0
23 8.0 23 31.0
3.0 Front seat rear height adjustment Ignition: ON
Press rear raise/lower switch (S91s2, S92s2)
Rear of seat rear adjusts up/down. Left seat Right seat
23 1.0 23 24.0
23 2.0 23 25.0
23 9.0 23 32.0
23 10.0 23 33.0
23 11.0 23 34.0
4.0 Backrest fore/aft adjustment Ignition: ON
Press backrest fore/aft switch (S91s5, S92s5)
Seat backrest adjusts forward/backward. Left seat Right seat
23 1.0 23 24.0
23 2.0 23 25.0
23 12.0 23 35.0
23 13.0 23 36.0
23 14.0 23 37.0
5.0 Head restraint adjustment Ignition: ON
Press head restraint raise/lower
switch (S91s4, S92s4)
Seat head restraint adjusts up/down. Left seat Right seat
23 1.0 23 24.0
23 2.0 23 25.0
23 15.0 23 38.0
23 16.0 23 39.0
23 17.0 23 40.0
6.0 Seat cushion fore/aft adjustment Ignition: ON
Press seat cushion fore/aft
switch (S91s10, S92s10)
Seat cushion adjusts fore/aft. Left seat Right seat
23 1.0 23 24.0
23 2.0 23 25.0
23 18.0 23 41.0
23 19.0 23 42.0
23 20.0 23 43.0
7.0 Memory 1 button Ignition: ON
Store seat position in memory position 1.
Move seat.
Press memory button 1.
Seat returns to position stored. Left seat Right seat
23 1.0 23 24.0
23 2.0 23 25.0
23 21.0 23 44.0
8.0 Memory 2 button Ignition: ON
Store seat position in memory position 2.
Move seat.
Press memory button 2.
Seat returns to position stored. Left seat Right seat
23 1.0 23 24.0
23 2.0 23 25.0
23 21.0 23 44.0
9.0 Memory 3 button Ignition: ON
Store seat position in memory position 3.
Move seat.
Press memory button 3.
Seat returns to position stored. Left seat Right seat
23 1.0 23 24.0
23 2.0 23 25.0
23 21.0 23 44.0
10.0 Front power seat switch group illumination Turn parking lamps on Front power seat switch group illuminates. Left seat Right seat
23 22.0 23 45.0
23 23.0 23 46.0
Coupé only
(if applicable)
11.0 Convenience feature
Open left or right front door
Move left or right front seat backrest forward


Move left or right front seat backrest backward


Closing front doors during the convenience feature function

Backrest is moved backward during forward convenience feature function

Backrest is moved forward during backward convenience feature function
Front seat travels forward at increased adjustment speed. Head restraint retracts to 1/3 of its maximum height adjustment.

Front seat travels backward at increased adjustment speed (max. of 105 mm before rear stop position).

Convenience feature function is terminated.

Front seat and head restraint reverse direction.

Front seat and head restraint reverse direction.
Left seat Right seat
23 47.0 23 48.0
23 49.0 23 49.0
23 50.0 23 51.0
1) Observe Preparation for Test, see 22.