Hey guys I noticed the rear vents in my STR are blowing warm air, but the front vents are working just fine. I played with the Dual button, but its the same thing, not difference. Any input would be greatly appreciated. Thanks in advance.

 

Anyone with a suggestion? I'm pretty sure it's not the infamous "DCCM" issue. For now I just closed off the rear vents.

 

It could be a blend door issue in your HVAC system. Or even a fan issue. The rear vents are further away than the front vents, so there is more ductwork involved....