Ventilation System For Rear Seats

[Steve Wallace]

I have a 2007 ES350, and have found that the rear vents blow HOT air even when the A/C is set low and the front vents are blowing cold air. Does anyone know how the ventilation system is controlled (i.e., where the thermostats are, how the ducts are run from the A/C condensor and heat exchanger)? I suspect that the thermostat that controls the air for the rear vents is OOC, but when I asked the dealer about the problem at the 5k service, I was told that there is no separate thermostat for the rear vents.

Thanks,

Steve