Visor light

I finally figured out what was happening. Several times in the past year, my battery was largely drained and I couldn't start the car. My alternator did die last year and I had it replaced - twice. But I never figured out why at seemingly random times, my battery just drained while the car was parked.

Today, in the midst of a snowstorm, I got into the Mercedes and tried to start it up. It was no use. There was enough of a charge for the pre-glow light and other dashboard lights, but it just couldn't turn over. It was then that I noticed that the passenger seat visor was down. And to my astonishment, the mirror light was on!

My visors are both missing the door flap that covers the mirrors and lights and turns the lights on and off. In fact, in 18 months of owning the car, I had never seen either of the visor lights on at all. This is certainly the culprit. I think tomorrow morning I'll remove the bulbs from these lights so this can't happen again. Ever.