I have a 1992 Mercedes 500 SL and the drives side front seat controls for mmoving the seat forward and back are only working one direction. The seat will move forward towards the steering wheel but will not move backwards away from the steering wheel. Also the seat back will move forward but not backwards. Is there a manual override, is it a fuse. Is there a fix anyone knows of?

Thanks

My email is jweedston@gmail.com if you can help.