Windows-both out at once

Does anyone know what might cause both windows on a 1980 450SL to go out at once. I have checked the fuses, they are fine. Could the relay have gone bad and if so where is it located? Any help would be appriciated.

[Snibble]

Im no expert, but even though you have checked the fuse and it appears to be fine, I would still go ahead and replace them just to be positive. Having 2 windows go out at the same time makes me think fuse.

[devil]

good chance your window relay has tken a dump
it will be located with your other relays above your
fuse box. consult_a wiring_diagram, sorry mines at work.
once you id it you can swap it with another one to do a
uick test.

long live joe strummer

[pentoman]

Hmm.. I do know that, on a 190E, if you disconnect the switch for the rear left window, the front right window will stop working.
Not sure if that helps, but it does suggest if one switch/connection is bad it can stop 2 windows working..

Thanks, it was a relay and they are located above the fuse panel behind the kick plate.