Hello, I have a 2012 Z4 and have an issue with the rear drivers side light, the indicator works sometimes and sometimes it does not, when it doesn't I have the warning bulb flash up on the instrument panel, it is intermittent but today it worked so I stopped and checked the light while indicating, looking at the strip it was lit up over half way then about an inch not lit up then the rest of the strip worked, if that makes sense, my question is does it have more than one bulb? or is it an LED light strip? if LED can it be repaired or will I need to buy a whole new light unit? hope my question makes sense and hope for some good news in the replies. Thanks in advance Ian