The cause is unnecessary alignments by the dealers while the vehicle is in low AHC. I used to have the entry assist on all the time until I went to the Toyota dealer the other day for a routine oil change. They have one of those drive thru alignment machines upon entry to the garage and they said it needed an alignment. I told them no, it is driving just fine and tire wear is fine. I have since turned off the assist. I'll bet the next time it goes through the machine it will be fine.