How to Upgrade the Bluetooth in a Mercedes

1. Press 'SYS' and select 'Activate Bluetooth.' A check mark should appear next to your selection on the screen.
2. Turn on your cell phone. Press the 'MENU' button. Navigate to the 'Bluetooth' selection. Choose 'Add a Device' and select your car's model from the list.
3. Press the 'TEL' button on your Mercedes GPS unit. Select 'Bluetooth' and 'Update' from the menu. Your GPS unit will now update the Bluetooth setting to work with your cell phone.
4. Press 'Options' and 'Authorize.' Enter the pass code you used to make your phone visible. Press the telephone icon on the GPS unit to confirm your selection. The Bluetooth connection between your phone and GPS unit should now establish.