vapour coming out of centre right vent/AC problem?

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2 Jul 2007
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Cheshire East
Hi all

I have a 2015 meganne dynamic Diesel. I have noticed a vapour coming out of the centre vent nearest driver when running ac. I also noticed the engine seems to be running a bit hotter. Any ideas what couLd be the problem. TIA
 
Is it like a fine mist, a bit sweet/sickly smelling? If so then it’s likely a tiny coolant leak in/near the heater matrix.
 
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