2007 E350 and iPhone 4
I hope the following information helps. First you should determine if your E-350 is Bluetooth Compatible. To Do So, Look in your Center Console & Confirm You have a MHI-UHI Adapter. (google MHI MB Adapter under Images to See what it looks like)
If you do-GREAT. Next you will need to purchase a Bluetooth Dongle. "Don't know why they are called dongles?" For your 2007 E-350 The Model # you would need is
B67875878 OR Viseeo MB-2 Bluetooth Dongle. My advice here: look online e-bay or check the viseeo website. Purchasing from MB Dealership the prices start at $400 & in some cases $600.. You should be able to purchase a used one for about $175-$300 tops. After that, go to MB Website under mobile blue tooth link for easy step by step instructions to pair your i-phone with your hands free system. **If you dont have the MHI-UHI Cradle Adapter then installation w/ Dongle will be more expensive.



