52 17 030 Removing and installing/replacing backrest frame on left or right front seat (comfort)
Removing backrest cover with support, refer to 52 17 405 REPLACING BACKREST COVER FOR FRONT SEAT (COMFORT) ON LEFT OR RIGHT SIDES .
Removing headrest support, refer to 52 17 380 REMOVING AND INSTALLING/REPLACING HEADREST SUPPORT ON LEFT OR RIGHT FRONT SEAT (COMFORT) .
Remove drive unit for headrest adjustment, refer to 67 31 541 REMOVING AND INSTALLING/REPLACING DRIVE UNIT FOR HEAD RESTRAINT ADJUSTMENT (COMFORT SEAT, BACKREST COMPLETELY REMOVED) .
Removing lumbar support cushion, refer to 52 17 050 REPLACING LUMBAR SUPPORT CUSHION ON LEFT OR RIGHT FRONT SEAT (COMFORT) .
Removing complete drive unit for lumbar support cushion on backrest frame, refer to 67 66 510 REMOVING AND INSTALLING/REPLACING LUMBAR SUPPORT DRIVE MECHANISM ON FRONT SEAT, LEFT OR RIGHT .