Last friday during a snow storm, I started my car, a 300 Ltd., and these lights were on. I was surprisedat thinking I had no ABS brakes or traction control in a snow storm. I backed up with high velocity (parked on an incline), and the lights were out in a flash. This might be one of the oddities with this car as my tachometer has also been dead twice in cold weather, but was okay at the end of the day. (?).