The OVR is the one with the Red top right? and to the left of that is that fuel pump relay? I just had that replaced a few months ago after the car kept stalling unexpectadly, including on the freeway going 70 mph, whew
2000 C230 Kompressor
1988 190e 2.3 - 225K miles, owned for 7 years. I cannot say enough good things about this car. Very well built, even at 225 it ran like new.