Hi - been reading on here for days but can't seem to find the answers I need. Last week started getting the SOS Malfunction warning on my 2013 X5. No chimes, radio, Bluetooth, etc ... Bought a few of those optical loops after reading similar issues on other models. Accessed the rear left compartment and see my Amp (was able to remove so read label) and another box directly behind it (unable to read the label). I'm guessing this is my Satellite radio box as I see what I think is the antenna line coming out of it. I put the optical loop in that and door/warning chimes and radio started working. I still get SOS warning and bluetooth not working. Anyone know where the Bluetooth module (or if I'm mistaken above) the Satellite radio module is located? I want to try the loop on that module as well. Thanks in advance!