Oops we found the problem it's us! Hahaha, the Air-conditioner or Heater must be in medium, low or off not on full. The front wheels must be straight. Not turn, like your going to slow down to make a turn or stop, and then turn with the front wheels turned. There are about 15 conditions where the Auto Stop/Start will not engage. This is for safety. I do like the feature. It will not engage in very slow stop and go, like at a drive through fast food, with cars ahead of you doing stop and slow go....