Bluetooth with Audio 50
I want to be able to at least connect my iPhone 5 or Note 3 to stream music.
Forget it, with Audio 50 you have only 2 options cassette deck and FM radio transmitter. You can upgrade to some used Comand unit but it's not worth of the hassle and money. You may go aftermarker but will ruin the whole look if you wanna keep the original look you can purchase
http://www.ebay.com/itm/Car-Radio-DVD-Player-GPS-Navigation-For-Mercedes-Benz-E-W211-CLS-W219-CLK-W209-/271517574491?pt=US_Video_In_Dash_Units_w_GPS&hash=item3f37b5655b
those will require additional components like amplifier and installation labor. You're looking at $1k just to make bluetooth to work. Good luck!


