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15.2e Electric Seat Adjustment (ESA)   >   12 Diagnosis - Complaint Related Diagnostic Chart

Complaint/Problem Possible cause Test step/Remedy 1) Rear power seat adjustment does not function Convenience relay module (K24) Rear power seat adjustment switch group(S55/1 or S55/2) DM Body & Accessories Vol. 1 section 5.1 Left seat Right seat 23 1.0 23 13.0 Rear power seat cushion inclination raise/lower adjustment does not function Rear power seat adjustment switch group(S55/1 or S55/2) Rear seat motor group,cushion inclination raise/lower motor (M18/1m2 or M18/2m2) Left seat Right seat 23 1.0 23 13.0 23 2.0, 23 14.0, 3.0 15.0 Rear power seat backrest fore/aft adjustment does not function Note: At a specific backrest inclination the seat cushion will not adjust fore/aft Rear power seat adjustment switch group(S55/1 or S55/2) Rear seat motor group, backrest fore/aft motor (M18/1m2 or M18/2m2) Rear seat motor group, seat cushion fore/aft motor (M18/1m2 or M18/2m2) Left seat Right seat 23 1.0 23 13.0 23 4.0, 23 16.0, 5.0 17.0 23 6.0 23 18.0 Rear power seat head restraint raise/lower adjustment does not function Rear power seat adjustment switch group(S55/1 or S55/2) Rear power seat adjustment , head restraint raise/lower switch (S55/1s2 or S55/2s2) Rear seat motor group, seat cushion fore/aft motor (M18/1m2 or M18/2m2) Left seat Right seat 23 1.0 23 13.0 23 7.0 23 9.0 23 9.0, 23 20.0, 10.0 21.0 Rear power seat head restraint raise/lower adjustment switch does not function Console switch (S52/5) Rear head restraint raise/lower switch (S52/5) Rear head restraint control module (N32/12) Rear seat motor group, head restraint raise/lower motor (M18/1m3 or M18/2m3) Left seat Right seat 23 24.0, 23 24.0, 25.0 25.0 23 8.0 23 8.0 23 10.0 23 21.0 Rear power seat adjustment switch group illumination does not function Rear power seat adjustment switch group (S55/1 or S55/2), or switch group illumination (e1) Left seat Right seat 23 11.0, 23 22.0, 12.0 23.0 Rear power seat head restraint raise/lower adjustment switch illumination does not function Rear head restraint raise/lower switch (S52/5) 23 26.0, 27.0 1) Observe Preparation for Test, see 22.