Although, I'm not about to challenge the internal computer in my car there are some things that if you do incorrectly the computer will ignore you. It will then try to resolve the problem you created by computing the best way that it knows to get you out of the mess. I have never run into this kind of problem in this Prius two 2011. If I ever do, I would shut down the computer in the vehicle at the price of losing all of the information it has. With my personal computer I have found that restarting appears to correct the problem.