1999 Mercedes Benz SL500 seats

There can be many reasons for a seat to not work. Start by checking your fuses. If all are in working order, try operating the seat switch. If nothing happens and you here no noises being made by the seat motor then you may be dealing with a failed seat motor or perhaps a failed switch. If you hear noise being made by the motor and it sounds like crunching or binding then you may have a a broken seat motor cable.