Have told the dealership twice and they say they can't find anything. I also told them that the light goes out when this occurs. This is the lane assist, temperature and battery component in the dash. So when it goes out this is when the car is not shifting gears right. That's why they say it doesn't have any codes. Also since this has been happening the miles per fallen will only show 23.2 miles per gallon. But when they looked at it and I got my car back as soon as you turn the car on it is now saying that I'm getting 30 miles per gallon and that doesn't change when I know I'm not getting that.