As winter is now here a functional defogger is a requirement yet this year my car won't defog no matter what I try.
All vents in the car are functional and blow whatever is pumped through them (eg I don't think there is a block of any kind, and both hot and cold work)
What I've noticed is that my model doesn't have a toggle for "recirculating" the air inside the car vs. pulling in fresh air.
Long story short the best I can do is full fan, set to defog, with the temperature on COLD. Although this keeps the windshield and driver/passenger windows mostly clear it isn't ideal when its freezing outside (I live near Toronto Canada, so it's a full 4 moths of winter)
These are the controls I have:
Is there a part of defog that should work like A/C that tries to remove humidity from the air?
Update: I didn't have any luck last winter resolving this but it turned out to not be a major issue weather wise. This year the problem has returned so I took it into my local shop. They found no issue with the heater, fan etc. and couldn't find any issue that would cause this. I'm now going to look deeper to see if I can find any leaks into the vehicle where moisture is getting in, check the cabin filter isn't dirty/oily/wet etc. I may also return to my dealer to see if they have any "known causes" that might be of magical assistance.