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Climate control problem S500 1998

KLP 92

MB Enthusiast
Joined
Nov 28, 2003
Messages
2,671
Location
London
Car
Mercedes S600, SL600, C250TD
I'm having problems with my S500 climate control.
When i change the settings for direction of air my centre vents stop blowing out air. I have the 2 button on the centre vent, blue and red. On my last S class , 95 model i had a similar setup but with the round dials for temperature. When i pressed on the buttons on the vent air came out of them. Once they start working it blows out air till i change the direction of air flow e.g up towards the windscreen. When i press the button on the centre vents the arrow comes up in climate control indicating that air is being passed throught the centre vents. But nothing comes out. If i keep pressing the direction key it sometimes starts working or just starts working by itself!!
ANy idea whats wrong?
Also i have noticed after i turn the fan speed beyond half spped it does not increase speed. Could the 2 problems be related?
 

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