[Brian566]

Hi
Found another issue today first day I have used the Auto Heating system on with air conditioning .
If all vents are closed when blower goes to max I am getting air leaks from the Front centre vent and passengers vents this is a loud whistling noise but no air coming through .
If I open my vent it goes its as the vents are a poor fit .
Anybody else had this

 

[Ash]

I've not noticed that but I don't think it's a fault either, if the fan is blowing at full speed the air needs to go somewhere so unless you expect the heating system to divert the air towards the windscreen automatically I guess it will blow at the closed vents and seep through.

 

[BenC]

I haven't owned many cars (2013 Fiat 500L, 2015 Toyota Yaris, 2017 Toyota Auris and 2019 SEAT Arona), but I can say that all of them have made the same loud whistling noise when all of the vents are closed. Like the above post says, the air has to go somewhere.

I guess you could say it's a design flaw, but one that a lot of modern cars seem to have.