FYI: The 400E
does not have an OVP like the 300 model does. In the 400 model the OVP (amongst other functions) has been incorporated into the base module that sits in the back left corner of the engine compartment next to the firewall (where the battery would normally be...almost looks like a battery). The battery on a 400E is actually in the trunk of the car.
Stevebfl decribes the 400E as having,
Quote:
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A whole new electrical center is setting where the battery used to and all the controllers including the base module which is an even more sophisticated OVR/Klima/FPR/air pump relay/etc
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But trust me...if our 93 300CE Cabriolet ever starts having the same kind of issues as the 400E is having...the first thing to be looked at will be the OVP!
MB FRAU