I have a 2007 Toyota 4Runner which often (but not always) looses electric power for a brief second while turning the ignition key on. The usual indication of this is that the rear windshield wiper will make one sweep. There have also been a couple time where the radio has lost the station programming. However, the car has never had an issue starting. I am thinking this is an ignition switch problem. Has anyone else had a similar problem?