[BMWM3some]

Recently I have been getting a tail light failure reading on my OBC. I have the OEM BMW Euro tail lights. I have had them on for a year without a single problem or reading on the OBC. Now whenever I turn on my parking lights this message comes up instantly on the OBC. I know it has nothing to do with the common brake light circuit failure because I used to get that to but I changed the little switch under the dash board and it went away permanently. But does anyone know what could be causing this? Funny thing is to that all my tailights work just fine. Ive double checked.

Thanks
Chris