Hello. .
I have a 2007 camry and my rear defrost light blinks when I start the car and my heat only blows out of the front vents... Need help please

 

The blinking light could mean there is problem with a climate control servo that operates the door(s). This could be the reason the air only blows out the front vents. The climate system has a built in diagnostic system, but you will need some service info to access.