I just recently started experiencing a problem with the automatic lights on my '07 DTS. I park the car in a carport. When I start it in the mornings (while the sun is up), the headlights come on in the carport. Normally the lights will go off within one minute. Now they will stay on until I park the car. When I return a few minutes later and start the car again, the lights do not turn on. In addition to the headlights being on all the time, the instrument panel lights are very dim and difficult to read. I bought the car in May and just started experiencing the problem in the past few weeks. I can't get my dealer to understand that I have a problem. Anyone else experiencing a similar problem?