I have my 2010 Prius at the dealer right now, my interior lights have a mind of their own. I always have them in the center (open door position) They go out automatically after about 10 seconds. The problem is sometimes they decide to come back on after I have exited the vehicle. For example when I get to work or park in the garage at night. One time when we were away for a weekend they apparently decided to come on and when I went to go to work on Monday morning there was no power anywhere. I had to have it towed to the dealer. They replaced the battery and three days later the same thing happened. I just talked to the dealership and they said everything checks out fine. They can't duplicate the problem so therefore there is nothing they can do. All the light modules show no short etc. Has anybody else had a similar problem or am I forced to keep the interior lights in the off position all the time to keep the battery from being drained?
The only lights that I know that do not shut off are the vanity lights. The dome lights will automatically come on only after you lock the doors and then approach the SKS sensors with your key. That will only turn on the interior lights for a few seconds.
So, maybe he has a spare key near where he parks? What possibly happens is that when it gets hotter/colder, the sensor senses the spare key, the light goes on and stays on until it gets colder/hotter, when the sensor no longer senses the spare key. I'm sure there are other ways this can happen. A long time ago, the retail place that I worked at had those sensor tags on its goods to prevent theft. Sometimes the sensor would go off because somebody would have spare change in their pockets which would reflect to one of those tags. Drove everybody nuts. Dumb Mike
