Chosen Solution
I was going down highway, had car set on cruise control when I went to hit my brakes it wouldn’t slow down, so I tried to speed up it wouldn’t do that either. Then my rooms would go from 0 to 60 then 0 to 60. I pulled over and shut car off for few minutes what could be going on with my car. Please help me.
I would call the dealer and ask if there is a service bulletin about that problem. Also, don’t use the cruise control. You used the word rooms in your post but that makes no sense so might want to correct that.