[W126 Coupe] Rear Vent: Hot Air

[Dawid Loubser]

According to the manual (and demonstrably so) the three large frontal  
air vents on the
dashboard only blow either outside air, or cooled air (no hot air).  
All the other
vents (including the two small side ones above the large frontal  
ones) blow
either cooled or heated air, according to user temperature selection.

Are you saying your central (main) dashboard vent also blows hot air?  
Can you
confirm this with your user manual? If so, they definitely did things  
very
differently for US/Euro cars.

I've heard stories about the "no hot air through the main vents"  
setup being
some kind of safety precaution (blasting the driver with direct hot  
air might
make him more drowsy, etc).


On 09 Apr 2007, at 2:21 vm., John Howard wrote:


> Folks,

>    My 1991 560SEC (US) rear vent only blows outside air  

> temperature, no hot

> or A/C air. I too have heard various stories about how these things  

> are

> supposed to work.  My 1987 300SDL blows hot or cold along with the  

> front

> vents.

>    By the way, the dashboard vents on both cars blows hot, cold, or  

> outside

> when I push the right buttons to select the air source.

>    I don't know where to find out how these things are supposed to  

> work in

> the various models and years of the 126 chassis.

>             John

>

> -----Original Message-----

> From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes- 

> bounces at mbcoupes.com]

> On Behalf Of Dawid Loubser

> Sent: Wednesday, March 21, 2007 1:35 AM

> To: Mercedes Coupes Mailing Lists

> Subject: [W126 Coupe] Rear Vent: Hot Air

>

> Güten morgen,

>

> I've often read (and as a quick search example, this post also states

> so: http://db.mercedes.cx/sec/199910/0166.html) that the rear vent  

> only

> blows cold air (fresh, or airconditioned). I can however state that  

> my 1990

> 560SEC most certainly provides both cooled and hot air though the  

> rear vent

> - This was demonstrated this morning when it blew cold air (windows  

> closed,

> driving in the sun) but a few moments after I opened all my  

> windows, it

> started blowing hot air in the rear as well as the front to  

> compensate.

>

> The only "cold-air-only" vents on my car are the main ones on the  

> dashboard,

> as they should be. This is a small thing, but I am curious about  

> why there

> are often posts stating that the only hot air to the rear are  

> through the

> footwell vents, whilst this is demonstrably not true in my case.  

> This is

> either a Euro/US difference, or maybe a later model year update, or  

> it's

> just something that regularly malfunction on people's cars?

>

> Can we settle this? Does anybody have accurate information?

>

> kind regards,

> Dawid

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>

>

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