Thanks for the great and detailed information. I have been researching for the past 4 weeks if a 1996 E320 has an "OVP". The only relays I have found are located on the right rear of the engine compartment and it is one unit(relay module) inside the engine computer compartment.

Does anyone knows if it is another location for the OVP? Does this vehicle has one?

I would greatly appreciate any help.

Norman