I just heard it today, my car was off but i can hear a sound by the back of the exhaust sounds like an buzzing air compressor if did not stop until i turn the car on and shut it off again i dont know what it is the car only have 700 miles

 

any help im worried

 

It's your EVAP system checking for leaks.

You could've searched and found this fairly recent thread: https://www.scionlife.com/forums/sho...highlight=evap

 

Wow thanks for the reply and help I thought my car is already start to have problems at such a low mile

 

Always search before you post! Plzzzz

 

I did I just don't know what to type