Pwr windows don,t work on 1990 Mercedes-Benz 560SEL

I have a 1988 MB 560SEL and the power windows don,t operate.

Asked by for the 1990 Mercedes-Benz 560SEL
1 answer
Start with the basics, i.e. check the circuit breaker and then the master switch. If they all don't work, it is something central to the entire system.