Man, that's a pretty wild set of symptoms. It's hard to wrap my head around 1 thing that could cause all of that.

Perhaps some of those symptoms existed prior to this incident, but they are just now getting noticed because of the other issues and the testing you've done? Just throwing that out there before we get obsessed with the idea that all these issues are tied to a single failure, which is possible, but seems far fetched. I just want to prepare you for the likelihood that more than one thing needs to be replaced

As far as testing that module, the first step would be to remove it and see if in fact water did intrude into it or not. Was the carpet wet? Secondly, you'll want to open the thing up and check all the input pins for busted solder joints where the pins meet the circuit board. This is an all too typical problem with that vintage of MB cars. If soldering and circuit boards isn't your thing, then perhaps somebody you know is?

I know this sounds rather obvious, so forgive me for asking - have you checked all the fuses? As many have noted, old German style fuses can look just fine but not work due to corroded ends. Spinning them in their sockets is a quick workaround, but really they should all be replaced every few years. They're cheap if you buy them in bulk.


Okay - Am I reading this correctly: When you roll up the window, the sunroof opens by itself? That does sort of sound like a waterlogged comfort module, but the carpets would have been soaked!

More investigation is needed. Find out if that thing got wet or not. Pull it out and open it up and see what you find. It's not too terribly hard.

__________________
-tp


1990 300SE "Corinne"- 145k daily driver - street modified differential - PARTING OUT OR SELLING SOON - PORTLAND OR. AREA - PM ME FOR DETAILS
1988 560SEL "Gunther"- 190K passes anything except a gas station
1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition