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15.2b Electric Seat Adjustment (ESA)   >   12 Diagnosis - Complaint Related Diagnostic Chartt

Complaint/Problem Possible cause Test step/Remedy 1) Front power seat adjustment does not function at all Convenience relay module (K24). Front power seat control module (N32/1, N32/2). Front power seat switch group (S91, S92). DM Body & Accessories Vol. 2.1 section 5.1 Left seat Right seat 23 1.0 23 24.0 23 2.0 23 25.0 Front power seat, seat fore/aft adjustment does not function Front power seat control module (N32/1, N32/2). Front power seat switch group (S91, S92). Fore/aft switch (S91s1, S92s1). Fore/aft motor (M27m1, M28m1). 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, Front power seat, front height adjustment does not function Front power seat control module (N32/1, N32/2). Front power seat switch group (S91, S92). Front raise/lower switch (S91s3, S92s3). Front raise/lower motor (M27m3, M28m3). 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, Front power seat control module (N32/1, N32/2). Front power seat switch group (S91, S92). Rear raise/lower switch (S91s2, S92s2). Rear raise/lower motor (M27m2, M28m2). 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 Front power seat, backrest fore/aft adjustment does not function Front power seat control module (N32/1, N32/2). Front power seat switch group (S91, S92). Backrest fore/aft switch (S91s5, S92s5). Backrest fore/aft motor (M27m5, M28m5). 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 Front power seat, head restraint adjustment does not function Front power seat control module (N32/1, N32/2). Front power seat switch group (S91, S92). Head restraint raise/lower switch (S91s4, S92s4). Head restraint raise/lower motor (M27m4, M28m4). 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 Front power seat, cushion fore/aft adjustment does not function Front power seat control module (N32/1, N32/2). Front power seat switch group (S91, S92). Seat cushion fore/aft switch (S91s10, S92s10). Seat cushion fore/aft motor (M27m6, M28m6). 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, Front power seat memory does not function Front power seat control module (N32/1, N32/2). Front power seat switch group (S91, S92). Memory button switch (S91s9, S92s9). Left seat Right seat 23 1.0 23 24.0 23 2.0 23 25.0 23 21.0 23 44.0 Front power seat switch group illumination does not function Wiring. Illumination (S91e1, S92e1), Front power seat switch group (S91, S92). Left seat Right seat 23 22.0 23 45.0 23 23.0 23 46.0 Coupé only (if applicable) Front power seat forward and head restraint down adjust (convenience) feature function does not operate with front door open and with the backrest tilted forward Left/right door switch (S17/3, S17/4). Left/right front seatback microswitch (S91/1, S92/1). Front power seat control module (N32/1, N32/2), Programming Left seat Right seat 23 49.0 23 49.0 23 47.0 23 48.0 23 50.0 23 51.0 Coupé only (if applicable) Front power seat backward and head restraint up adjust (convenience) feature function does not operate with front door open and with the backrest tilted backward Left/right door switch (S17/3, S17/4). Left/right front seatback microswitch (S91/1, S92/1). Front power seat control module (N32/1, N32/2), Programming Left seat Right seat 23 49.0 23 49.0 23 47.0 23 48.0 23 50.0 23 51.0 1) Observe Preparation for Test, see 22.