I have an '04 Sienna LE that I bought new in the Spring of 2004. I think there is something wrong with the rear climate controls, but the dealer says there isn't.
Yesterday, it was rather warm and my son was all the way in the third row. He started complaining that he was hot. I turned the dash control to cold, but he was still hot. I reach back to feel the temp of the air coming out of the rear vents, but of course it's coming out of the floor board registers. So I reach back behind my head and press the rear control's vent button and the air coming out of the vents is hot as hell. Huh? I look to see that the rear temp control is set to hot. I turn it to cold and everything is fine, but I'm not happy because what good is having a control on the dash if it doesn't control the whole vehicle. And you have to damn near wreck the van because you're reaching behind your head. The dash control was never set to REAR either, but it seems that the rear controls were controlling the rear temp and airflow.
We have taken it to the dealer about this before and was told that everything is working the way it should. This doesn't make any sense to me at all.
The way I understand it is supposed to work, when the front control is set to REAR, you can independently control the rear temp and air flow using the rear controls. Otherwise, the front controls control temp and air flow for the whole vehicle. Isn't this the case? Has anyone else had this problem?
Thanks,
-Trent