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  #1  
Old 12-03-2008, 02:48 PM
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Help with a Climate Control Problem

Hi all.. Im just purchased another C280. Its a 99 and Im trying to fix a few items. But currently, its cold and I need heat thru the center vents...

The Climate Control will NOT allow selection of the center vents. When I depress the selector button, it allows upper & lower arrows only. How do I select the middle arrow for the center vents. Currently, I have no air from the center vents.

I have not pulled the control valve to test the vacuum elements yet. Hoping that I dont have leaking elements..
I replaced the elements on my 95 C280 and it was a pain... Will the 99 C280 climate control unit block out a selection if the element(s) are bad??

Thanks for any assistance here..

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  #2  
Old 12-03-2008, 03:32 PM
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That car isn't designed to put heat thru the center vents.

Only out the footwells & defroster ducts.
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  #3  
Old 12-03-2008, 03:42 PM
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Thanks Doc.. Guess Im gotta keep this cold steering wheel in the mornings!

So, when is the center vents selectable?? AC Only??

Want to select it like this:


Last edited by ScottyP; 12-03-2008 at 03:46 PM. Reason: Added Picture
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  #4  
Old 12-03-2008, 04:58 PM
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The W140 chassis can direct heated air thru the center vents & any other model with red & blue buttons on the center vent.
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ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
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  #5  
Old 12-03-2008, 06:33 PM
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Great, my 99 C280/W202 chassis has red & blue buttons just like in the picture.

Now, how do I get the selector to do like the picture??
I get the up and down arrows to display but not the center arrow...

Maybe Im not doing something special. Can you reset the unit?
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  #6  
Old 12-03-2008, 11:57 PM
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Update:
Checked for Climate Control codes: None found.

Anyone has any suggestions?
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  #7  
Old 09-12-2010, 04:53 PM
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Help...beam me up Scotty

Quote:
Originally Posted by ScottyP View Post
Hi all.. [sic]

I have not pulled the control valve to test the vacuum elements yet. Hoping that I dont have leaking elements..
I replaced the elements on my 95 C280 and it was a pain... Will the 99 C280 climate control unit block out a selection if the element(s) are bad??

Thanks for any assistance here..

ScottyP or anybody, how do you get to the front passenger side vac elements on the 1995 C280?

Also I'd like to know how to test the elements via the control valve, wherever that is located..
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1979 300D 199 K miles
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1979 240D 140Kmiles (bought for parents) *SOLD.
SAN FRANCISCO/(*San Diego)
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  #8  
Old 09-14-2010, 01:34 AM
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http://www.zadefaraj.com/dashboard.htm

thanks to benzworld...

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1979 300D 199 K miles
1995 C280 95 K miles
1992 Cadillac Eldorado Touring Coupe 57K miles
********************
1979 240D 140Kmiles (bought for parents) *SOLD.
SAN FRANCISCO/(*San Diego)
1989 300SE 148 K miles *SOLD
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