Complaint/Problem	Possible cause	Test step/Remedy 1)
Complete seat adjustment does not function.	Left or right front ESA control module (N32/1 or N32/2) (with memory) Left or right front ESA switch group (S91or S92) (with memory)	23 1.0 23 2.0
Seat fore/aft adjustment does not function.	Fore/aft switch (S91s1 or S92s1) Fore/aft motor (M27m1 or M28m1)	23 3.0 23 4.0, 5.0
Front power seat raise/lower adjustment does not function.	Front raise/lower switch (S91s3 or S92s3) Front raise/lower motor (M27m3 or M28m3)	23 6.0 23 7.0, 8.0
Rear power seat raise/lower adjustment does not function.	Rear raise/lower switch (S91s2 or S92s2) Rear raise/lower motor (M27m2 or M28m2)	23 9.0 23 10.0, 11.0
Backrest fore/aft adjustment does not function.	Backrest fore/aft switch (S91s5 or S92s5) Backrest fore/aft motor (M27m5 or M28m5)	23 12.0 23 13.0, 14.0
Head restraint raise/lower adjustment raise/lower does not function.	Head restraint raise/lower switch (S91s4 or S92s4) Head restraint raise/lower motor (M27m4 or M28m4)	23 15.0 23 16.0, 17.0
Switch illumination does not function.	Left or right front ESA switch group (S91 or S92) (with memory) illumination	23 20.0

Survey of Recallable Test Functions

Convenience feature does not function or has faulty functions.	Head restraint pre-adjustment Left or right front ESA control module (N32/1 or N32/2) (with memory) Head restraint raise/lower motor (M27m4 or M28m4) Seat fore/aft motor (M27m1 or M28m1)	23 1.0 23 16.0, 17.0 23 4.0, 5.0
Seat position (memory) does not function.	Left or right front ESA switch group (S91 or S92) (position memory) Left or right front ESA switch group (S91 or S92) CAN L/CAN H dataline Combination control module (N10-1)	23 18.0, 19.0 23 2.0 23 21.0 - 25.0 D.M., Body and Accessories, Volume 1, 2.1, >23 >2.0, 3.0
Seat adjustment does not function with left or right front door open and without ignition key: ON	Left or right front door switches (S17/3, S17/4) CAN L/CAN H dataline Combination control module (N10-1) PSE controlmodule (A37) (combined functions)	D.M., Body and Accessories, Volume 1.1, 3.3, >23 >2.0, 3.0 23 21.0 - 25.0
Left front power seat fore/aft adjustment, rear power seat raise/lower and fore/aft adjustment operate opposite of normal function.	Programming of left or right front ESA control module (N32/1 or N32/2) Programming of combination control module (N10-1) Steering column in/out switch (S91s12)	Seat adjustment motor supplier "Brose", "Hammerstein" programmed in error into N32/1. Left hand driver/right hand drive programmed in error. D.M., Body and Accessories, Volume 3, 12.4>23>17.0

1) Observe Preparation for Test, see 22.