Date registered: Sep 2006
Vehicle: 2004 CLK 240 Coupe
Location: Norfolk. UK
Mentioned: 9 Post(s)
Quoted: 343 Post(s)
I can see no way that these two problems above are are linked.
Now about your coolant & washer level mystery. I had replied on 14/5/2010 to your post on the W209 forum that I could find no reference to a coolant level switch in the WIS. However, I had another search today, and I have to admit I was wrong about that and I have now discovered a page in the WIS detailing the operation of these two associated alarm messages. I still am unable to find precisely where the coolant switch is located.
The washer level switch is located behind the inner fender panel on the side of the washer reservoir.
I have read the WIS text a few times now, and I think that I understand it. However, I cannot figure out how one faulty level switch can cause both messages to be created. And it's hard to believe that both switches are faulty. So maybe it is not the switches, but the applied voltages, or bad contacts along the way.
Study the WIS information yourself, and I'll be happy to discuss the issue further. It's an interesting problem.
If you are going to MB for your a/c top-up, ask the tech where the coolant level switch is located.