need answer fast on 1994 Mercedes-Benz S420

the odometer stop working. what cause it to stop? how do you fix it. the odometer just stop and resetting the trip meterdidnt help. need quick answer.

1 answer
on the passenger side under the hood there is a black cover under the hood near the fire wall remve cover with allen wrench there a some big grey cartriages a fuse is blown inside of it