I live in Dallas and it gets hot, but I have never had a dashboard crack like on my 2004 Sienna. With this many complaints it seems like a defective series and there needs to be a recall or something. We have a long crack above the glove compartment and another starting further down, but all on the main piece. I took it by the dealer and they said they hadnt seen anything like it before and that its expensive to replace. They referred me to an independent crack fixer who told us if the crack is more than 6 inches then he cant help. Ours is a straight foot long crack!