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1986 560sl Black Pearl
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Discussion Starter #1
Hi, I just got a 2007 B200T a month ago. 74,000 km, cvt, comet grey. As it was getting colder here in Ottawa it took me a week to realize I had NO air-flow to the floor. I brought it in as it's still under warranty. When I picked it up they had "aligned the linkage" and there was now air-flow to the floor. BUT there is ALWAYS air coming thru the dash-vent no matter what the setting. They showed me a 2009 on the lot that worked the same way. The only way is to actually close the dash-vents. (which also increases airflow to the floor) I've read other posts about marginal heat in the B-class but I haven't seen anything about this issue. Surely this can't be normal, every other car I've ever had, the dash-vents turn off completely when you put the defrost or floor-heat on.
Any-one with the same issue???:confused:
 

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100% normal, welcome to German car engineering!
 

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1986 560sl Black Pearl
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104 Posts
Discussion Starter #3
Leak follow-up

So your vents leak too, mike? Well thanks for the feed-back. Any-one else out there with the same issue? By the way, I wouldn't put it down "German engineering" more like "B200-engineering". The C230 kompressor my wife drives doesn't leak one bit.
 

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The 2002 C 230 Kompressor we used to have did this too. It's not "leakage", it is a design feature. Actually if you use it well, it provides a lot of additional versatility in the heating/cooling system.

The US carmakers have an either/or system: face/floor or no face at all.

I like this feature. I leave the side vents open year round and in winter I point them at the side windows for extra demisting. The centre vents are usually closed in the winter.
 

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I just remembered: if your wife's car is a 2003+ C 230 K, it was dumbed down for the US and Canadian market by eliminating the independent face vent control.

M-B also eliminated the central dash vent for the windscreen, because that seemed to confuse people in humid places using A/C in the summer (condensation on the outside of the windshield)!
 

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GLK350 2011 Gone, B200 Turbo CVT 2009 Gone, GL320 CDI 2008, B200 Turbo CVT 2006 Gone
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it is normal we had it on our cars as well.
On 2006 model I would put the heat to the top and floor or just floor.
In 2009 model it was thermatic climate control and it was not an issue heating to the floor.
 
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