My van will only lock with the keys in the ignition if I use the second key and manually lock the drivers door. I can push all the buttons i want, but it wont lock with a key in the ig unless I use the manual drivers door lock. Then it auto locks all other doors at the same time. I do this seldom, but in the heat of summer, if I have Oso with me, I leave the ac on with the rig running and lock it up while I go in for parts or hardware. Just dont loose your second key.