Erratic blower when defrost is turned on and water forming on front windshield. on 2007 Lincoln MKZ

Of course the dealership says there is no problem!! Whatever!! This has been an ongoing problem which they have been told about on several occasions. During the winter when the car is left overnight water droplets form on the inside front windshield over the right side dash. This is not regular fog but actual water drops. It only happens in the winter and not during the summer. As for the Defrost, when turned on first in the morning, it comes on full force sometimes and we cannot stop it at all even with the fan speed control button. It will make a sucking and hissing noise, stop by itself, and then start normally again all by itself. The car has normal heat and A/C other than these times. I do not think these things are normal as the dealership would have us believe. Any suggestions anyone? The car is still under warranty as well. Thanks for any help.

Asked by for the 2007 Lincoln MKZ
If the dealer either can't help you, or refuses, or you don't want to pay for diagnosis, then find an independent Ford/Lincoln specialist. I'm sure he can help you.
Even if a car's still in warrantee, usually a customer agrees to a diagnostic fee which would be refunded if it's a covered repair. Not all repairs are covered and the dealer deserves to get paid for diagnostic work, either by the customer or the factory.
If you want to find a specialist, here's our directory link for you: