On the W116, the Evaporator Temperature Regulator sits atop the evaporator case. If you pull the glovebox and use a 90° carburetor adjustment tool with a stright-blade screwdriver bit on the end, you can dig through a spot in the felt cover and turn the screw a little.

It is NOT easy to do!!!!

I don't recall now which way I went, but 1/2 turn dropped the center vent temp from 44°F to 38°F.

I went back to the original setting because I felt it would result in less strain on the compressor...Robert

__________________
Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership