[sodamark]

Hello, I was having a similar issue, I believe, with the rear air not blowing properly when expected. I tool JBH1989's advise and pulled the rear passenger panels off. I was able to pull off the tube that leads to the floor vents and noticed that here is a little white shaft that has a gear on it. When you push the buttons on the center control for rear roof, rear-bi-level, od rear-floor, that gear spins and moves a little damper. You can see the end of the white shaft on the front of the blower assembly. If you reach behind the blower/heating/cooling assembly(against the sheet metal), you can feel a mechanism that actually helps move the damper gear. Mine was stuck open to the floor position. I had my son push the roof vent button on the console, and gently prodded the mechanism behind the blower assembly, and that seemed to help get the damper moving again.

That does not necessarily solve the hot air issue, but, it does mean that things can get stuck as 1989 suggested. The only problem I've got now, is that the damper only moves from floor to bi-level position, but never fully roof vents. So perhaps, I need a recharge, or there is something that requires more adjustment. In any case, at least there is air coming in from the roof vents now.