Where's your bluetooth antenna? I thought the 2002-up E53 had 2 threaded bolts on the top level for the BT antenna like in the pic below. Or perhaps you're fretting over the empty space between the BT antenna and the Nav CPU?

__________________
Become a BMW CCA member! Click HERE to join and feel free to use my BMW CCA member #191509 as a referral.

• 2015 f06 650ix GC (Moonstone exterior/Cohiba brown Merino Leather interior)
• 2014 f15 X5 50i (Space Gray exterior/Mocha Nappa Leather interior)