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Old 07-12-2007, 10:51 AM
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JimF JimF is offline
'94 S500: only 793 sold!
 
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,933
Quote:
Originally Posted by ksing44 View Post
It makes sense that you would have the AC on if it is hot, so why not depend on the AC? They also seem to have designed the car to use AC even in winter driving to control humidity. Maybe they just figured AC would always be on.
I think your last statement is what they had in mind; since they call it "climate-control", I think they wanted you to keep it on set for "70degs" (or whatever temp makes you happy) and then the fans will take care of keeping your engine cool. Since the A/C will be on, the fans will come on when needed.

Of course, you need to keep your A/C operational . . . but using your "ears", you can tell when something isn't correct . . . if the fans don't come on "low", on a HOT day, then something is wrong. *

If you ever "forget" what the key trigger points are for each separate mode operation, go to MENU#18 and look at the table, called "Aux Fans Activation", in the middle of the page. All the key 'numbers' are there. . .

* You can check the A/C's operational parameters by accessing the info via the control panel. Follow MENU# 15 to read-out these parameters esp "5" (a/c evap temp) and "7" (a/c compressor pressure). The latter will tell all . . . high vent temp or very low pressure means a low charge.
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Last edited by JimF; 07-12-2007 at 11:05 AM.
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