The OVP is very simple to check, itís a little silver box next to your firewall. There will be a 10 Amp fuse in it. If it is blown then replace it, if not...rule it out. I donít know where it is on your model but on my 190E if I recall correctly it was in the back of the front driverís side fuse box. There was a flip up cover over the fuse and the fuse pulled out horizontally. I'd have to look again to be completely sure as it was almost 2 years ago but again, itís very simple to check.
1986 190E 186K (For Sale)
(Maroon, Tan leather)
1996 C280 Sport 208K
(Brilliant Silver, Black Leather)
2002 CLK430 Sport 45K
(Brilliant Silver, Gray Leather , Birdseye Maple)