In mine the "bulb fault" indication comes up randomly, with all lights working properly and disappear in the same way.
I noticed that that it happens more often if I have headlights already on when I start the car (but I'm too lazy to turn it on and off manually).
So I decided that I can live with the message when it shows up (not more than once after a couple of month) and stays no longer than a few hours.


2010 Violet Aero Supersports | 2012 Green Vantage S Roadster