I have a '97 CL500 (C140) coupe. On the right side of the engine compartment behind the inner wall and next to the box containing the computer boards there is a green vacuum line going into a rectangular fitting on the side of a cover sealing off the AC blower and other things.
(Sorry for the lame explanation as I haven't found out how to post a picture yet.)
Anyway, can anyone describe this small vacuum fitting and its purpose?
Anziani
'95 E420 129K
'97 CL500 135K