I HAD SOME WORK DONE ON THE CAR - Now the the air bag light will not go off. on 1997 Mercedes-Benz C230

The wipers were worked on only to find out the wiper motor and the switch were fine. It was the hydraulic arm. It was after all was put back together that the air bag light would not go off.

Asked by for the 1997 Mercedes-Benz C230