Middle vents dont work?
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From: NJ
E320
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From: Vancouver, BC
Enzo, my Benzo
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From: stamford, CT
1993 Mercedes 300e 4-matic (m103 motor)
The middle vents dont come on with heat I tink because mercedes doesn;t want oyu falling alseep at the wheel, however they will blo heat if the outside temperture is extremely cold.
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Joined: May 2003
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From: Boise, ID, USA
300D, 500E, E420
The center vents only blow cool air. You will never get heat out of them. However it is very common for one or more of the vacuum pods that control the vents to fail after 10-15 years. Here's a link with details on how to test all of them - you just need to pull the glovebox (or passenger airbag), and use a Mity-Vac:
http://www.buymbparts.com/forum/showthread.php?t=528
More photos are here:
http://www.w124performance.com/images/W124_dash/
http://www.buymbparts.com/forum/showthread.php?t=528
More photos are here:
http://www.w124performance.com/images/W124_dash/
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Joined: May 2003
Posts: 560
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From: Walnut, CA
MB 1990 300E
unfortunately my center vents don't even blow cold! only my defroster and side vents work. i need to do the diy check on it sometime but its just been too busy...
on another note, does our A/C blow softer or harder depending on how much your on the gas? If i set the a/c on the lowest setting, it will still blow harder if I am stopped at a light with my foot off the gas then when I am just accelerating. only reason I ask is because it used to blow at one speed/setting no matter what. now it constantly fluctuates depending on the gas pedal.
on another note, does our A/C blow softer or harder depending on how much your on the gas? If i set the a/c on the lowest setting, it will still blow harder if I am stopped at a light with my foot off the gas then when I am just accelerating. only reason I ask is because it used to blow at one speed/setting no matter what. now it constantly fluctuates depending on the gas pedal.
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From: Bellevue, NE
1995 E320 SE, 162,000 Miles (Sold) 2007 CLK350 Cabriolet 2014 ML550
unfortunately my center vents don't even blow cold! only my defroster and side vents work. i need to do the diy check on it sometime but its just been too busy...
on another note, does our A/C blow softer or harder depending on how much your on the gas? If i set the a/c on the lowest setting, it will still blow harder if I am stopped at a light with my foot off the gas then when I am just accelerating. only reason I ask is because it used to blow at one speed/setting no matter what. now it constantly fluctuates depending on the gas pedal.
on another note, does our A/C blow softer or harder depending on how much your on the gas? If i set the a/c on the lowest setting, it will still blow harder if I am stopped at a light with my foot off the gas then when I am just accelerating. only reason I ask is because it used to blow at one speed/setting no matter what. now it constantly fluctuates depending on the gas pedal.
Also FYI, when you roll the temp knob all the way to the end of its travel and push it a bit further, there is another detent which puts it in max cool or max heat. Make sure you feel the click to test the modes.
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Joined: May 2003
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From: Boise, ID, USA
300D, 500E, E420
on another note, does our A/C blow softer or harder depending on how much your on the gas? If i set the a/c on the lowest setting, it will still blow harder if I am stopped at a light with my foot off the gas then when I am just accelerating. only reason I ask is because it used to blow at one speed/setting no matter what. now it constantly fluctuates depending on the gas pedal.
