Thanks to everyone that contributed information and directions related to replacing the inside rear view mirror on our R170 SLK's. Certainly the written directions are clear enough for anyone with a little experience working on their own cars - to follow.
But then - there are lot people that have never attempted to take any part of a car's interior apart - and brief written instructions can leave them feeling - more than a little uncertain about their desire to do anything themselves.
For that reason - as I was in the process of changing-out my defective interior rear view mirror, for a new replacement - I took some more pictures of the process. Just so others can see how really easy it is to do it yourself.
I have put them up on my server at the following URL. When I learn how to get all this put up on the SLKWorld sight/server - I'll archive it there as well.
If anyone sees any corrections that are needed - or has suggestions as to how to make it more clear or understandable - just let me know.
I read this excellent procedure and followed it quite well but found a couple of things slightly different on the 2001 SLK 320 when all was completed.
It is necessary to remove the four screws holding the sun visors but you do not have to remove the windshield header molding on the 2001 model. The interior light is different and offers good access.
If you pull the lens off the map lights it comes away quite easily and there are two screws under the lens that must come out.
Removing all 6 screws allows the trim molding to flex in the middle of the windshield at the bottom.
Pull on the driver's side end of the lamp housing and it will come out easily. Slide it slightly to the left (driver's door) and the connector will clear leaving a large hole.
In the hole the wire for the mirror is easily located simple by pulling the bottom of the trim away from the windshield and wiggling the mirror wire.
There does not appear to be any cable clamp in this model where Carl's picture shows it.
Pull the connector through the hole and carefully disconnect it by sliding a small flat screwdriver down to the hole where the pin is and pull the pin past the hole as Carl describes.
Pull the mirror wire back towards the windshield while holding the molding away from the glass. 1/4-1/2" is easy to achieve and is plenty of clearance.
Remove the mirror as Carl describes it.
Reverse the process to re-install the mirror. You may have to fish the wire from the mirror into the lamp hole but if you have smaller hands you can reach in and grab it. Worked good for me.
As a footnote, Sybesmas does not have a replacement swap out mirror in stock at this time so I must send mine in for rebuild. At $97 including return shipping it is far cheaper than most used ones on the market and is guaranteed to work. The only risk is they could damage the case.