I really feel stupid now. I have parked and charged at the same spot for two years. It seems that the tail light on the MY is upgraded from the M3. I am getting a bright reflection from a business next door. By 1 PM the sun has moved far enough that it is no longer reflecting and causing that tail light to look like it is on. I spent a lot of time reading the manual, searching forums and on Google. Thanks for the replys.