194449. 2518 posts · Joined 2010. #2 · Apr 13, 2013. Tone74 said: Hi I wounded if you could help , I have a bmw e39 with a business sound system and 6 cd changer in the boot . The cd changer has power to it and let's me load CD's and then goes through the 6 cd's one by one , but when I Press the mode button on the head unit it on switches Well, went back to the car, opened the door and heard the CD changer making noise, hit the eject button quickly and out popped the cartridge! Don't know what prompt it to, but it is out, so now I'm going to order a new cartridge as recommended. 1 more "item" worked off the list, now on to the trunk hydraulic system! dWmf.