300SL (129.061) L6-3.0L (104.981) (1991)
5
Move front seat forward with forward/backward adjustment mechanism.
6
Unlock backrest and tilt forward.
7
Unscrew screws (2 each) on rear of backrest frame (arrows).
8
Tilt backrest back.
Mounting points on backrest cushion.
9
Pull backrest cushion downward and remove.