I would get the same message at least once every 6 months. If you look at both tail lamps you'll see that there are 2 bulbs in each, one above the other. On first glance it didn't look like there was a problem because there was light on both sides, but looking more closely it turned out a bulb was indeed not lit up. Sometimes, a slam of the trunk would fix the issue or otherwise reseat of the bulb fixed the issue. Other times, the bulb was really burnt out.

Conversely, one of my front parking lights burnt out (yellow bulb at the corner that has a second filament for the turn signal...and yes, they both are a pain to swap out) but the message center never indicated a burnt bulb. *shrug*

- Dan