The best visual way to check is to see if you have rear door speakers, there should be a speaker right behind the handle of each rear door. If you do not see a speaker you do not have L7.
Originally Posted by vk535i
I check my already ... just only the grill not speaker on the center at all...
2008 BMW 550i Carbon Schwartz Metallic, 6 Speed Manual, Sport Package, Cold Weather Package, Logic 7, Comfort Access, Active Steering, Sat and HD Radio, Navigation, Comfort Seats and custom coding.