Question about Mercedes-Benz C-Class

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I drive c240 2005, when i turn the front glass fog air blow on, it give loud noise and now air comes out, it seems that pips are blocked somewhere.. NOT SURE WHAT TO DO

AC dash board dont blow air out to take off fog

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  • 17 Answers

Do you mean that the air does not come out of the vents at the bottom of the windshield?

This could be as simple as a vacuum leak or a broken leaver somewhere in your dashboard. I'm a big fan of fixing it yourself but I think this one is going to be easier for a dealer to fix.

Posted on Apr 10, 2014

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Posted on Jan 02, 2017

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tommyboinow
  • 324 Answers

SOURCE: there is no air blowing out the vents on the dash board when i turn the ac on

you have a bad control unit, the thing you use to switch from one thing to the other, it needs to be replaced.

Posted on Nov 26, 2008

tommyboinow
  • 324 Answers

SOURCE: there is no air coming out the vents on the dash board when i turn on the ac.

already answered it.

Posted on Nov 26, 2008

  • 33 Answers

SOURCE: Air doesn't come out front vents

look under your hood for any vaccuum leaks. check all rubber hoses under the hood. they should be roughly the size of your pinky.

Posted on Aug 08, 2009

  • 50 Answers

SOURCE: loud noise from under the dash, ac/heater area. No cool air 97 li

If this noise is a clicking sound and is coming from the front center of the dash, then it may be the blender door motor which will require removal of the dash to replace it. It will keep the door from switching from heat to a/c. Does the odor smell like you have a freon leak in your a/c evaporator core or does it smell like a rat stuck in your heater and a/c ducts?

Posted on Oct 11, 2009

  • 88 Answers

SOURCE: my 2002 ford explorer wont blow any air out of the vents...

It sounds like blower motor has failed. Motor is located behind glove box on lower part of heater box.

Posted on Dec 26, 2009

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1 Answer

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Is it fogging up when you use the heat or a/c? Is it fogging up after sitting outside on a particularly dewey night?

An easy fix and one to try first is turning the temperature gauge over toward heat, and setting the directional controls to defrost. Up the power on the blower for a moment. The warmer air will usually clear up a foggy windshield in seconds on a chilly or even not-so-chilly morning. The condensation on the glass needs a change of temp in order to evaporate. Sometimes you can get the same effect by using outside air to circulate through your car's blower system. Most have a way of circulating either inside-car air, or outside-car air.

If the glass fogs when you're driving down the road and have the heat on, or the a/c - do you smell something sweet or see white smoke coming out of your air vents? If so, you could have a faulty heater core. I wouldn't imagine this is the problem on such a new vehicle, but it could still malfunction.

Of course, if you're trying to wipe this fog clean and it won't go away, maybe you've got someone smoking in the car and leaving a film on the glass. It would take a lot of smoking to make the windshield look foggy though.
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