Service Advancetrac light is on,and brake lights will not go off.

What is your question?

I have a 2011 Ford Flex. The advancetrac light is on and my brake lights will not go off unless I disconnect the battery. A couple days ago when I pressed on the gas I got no response, the car would not move, you couldn't even rush the motor. I let the car sit over night with the battery disconnected, now it will drive and go, but the acceleration hesitates, and I have to push the gas all the way to the floor to make it continue to go. Any ideas what this could be and how can I fix it.

What makes this problem better or worse?

Disconnecting the battery

How long has your 2011 Ford Flex had this problem?

A week