New to me 2004 lx470 in pretty good shape. New battery from PO last few months. Twice now has refused to start on first turn of key, first time gave a click like it was going to try, then started fine. Second time really no click and while truck shut down acting like the battery was out of the truck. Restarted on second try, after I opened the door and closed again. Clock is reset on the center console this time. Both times VGRS light was blinking and went out after a little driving. No codes on obdII reader. Any thoughts?