I have had the same thing happen to me but I have decided that it is just some wierd cut-off point for the twilight sentinel. Like the posts previously, it happens only in Park and in situations where there is a questionable amount of light/dark. Mine does it in the garage sometimes depending on how much morning sunshine there is and it also does it at drive-thrus (especially Taco Bell) when I have to put it in park because they are taking too long. I don't see it as too much of a problem since I by-passed my DRL'* the first week of owning mine. I wouldn't worry too much, but that'* just me.