I get the same error message, and the sides work fine with the directionals. I may open them and dielectric grease the connections in hopes of a cure. I expect they are originals and covers have never been opened. I occasionally have a similar issue with the license plate bulbs.

__________________
2006 X5 3.0 6-spd w/Evo UUC ssk
sport/premium pkgs
born Valentine's Day, 2006.