What happens when you hit the defrost button. It should come on full blast, except if it's really cold and then it will wait until the coolant is at at least 40c or so. Try it. Let us know..

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Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.