Remove left rear seat back rest and rear seat bottom per 520 Seats; unlock trim in direction of the arrows, start at and remove toward (C); release fastener and remove tie down from the backrest; lever surround from backrest frame and remove rear panel from the backrest frame, and for installation insert the rear panel into the backrest frame first then press the surround from the backrest into the frame; release the screw, hold the seat belt guide in the dotted area and pull up to remove in the direction of the arrow, feed the seat belt strip out of the guide and place aside; illustration omits backrest cover and upholstery for clarity; move the backrest cover with upholstery upward, release fastener on the rear side of the backrest and remove the seat belt reel in the direction of the arrow, installation is the reverse of removal; place the seat belt anchor correctly on the locating pin, ensure the tab on the seat belt reel engages the slot, and use new self-locking bolts.