PeachParts Mercedes-Benz Forum - View Single Post

tobybul · #4 12-06-2006, 01:43 PM

This problem appears to be pretty common on high mileage D's. And it may very well be the CCU board. I received a CCU from an 83 300D the other day that I got from a salvage yard. The board is enclosed in a plastic box that looks like it can be opened up but am still trying to figure out how.

The box has slits that is probably for venting. I sprayed contact cleaner thru the slits and the cleaner residue that came out looked blackish. This tells me it gets dirty in there (after 20+ years).

I'm still trying to figure out how to open the box to get to the board. Someone said that the circuit board may develop cracks and open some circuits which then requires some soldering. Spraying contact clleaner maybe all it needs.

The other thing I am trying to figure out is how to remove the CCU from the car. I'd like to swap the units when I figure out how to remove it.

Any info would be apreciated.