Is there a way to use you personal cell phone with a blue-tooth type arrangement in a 2002 E320? Or does the dealer install/activate a wireless phone system, with a whole new phone number assigned to it, etc.? There's a phone button (with a slit in it) on the dashboard sound system controls.

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Todd
2002 E320 4Matic
1998 E320 4Matic Wagon
1992 300E