you went And to limp mode.this is when something happens abruptly to the engine or transmission to save you from hurting something your car goes into left mode. By turning the engine off and restarting resets the computer. You didn't heard anything this is normal. I had this happen to me a few times. Specially if you're an intern and you back out of it right in the middle of the turn and then mail it again you would go to let mode, as far as the transmission fluid goes, I'm not there so I don't know, who change the transmission fluid and did they do it correctly. jim