Mercedes-Benz USA, LLC recommends deauthorizating in both COMAND and the mobile phone. Subsequent authorization may otherwise fail.

To call up the telephone menu: press the function button once or twice.

Select Data/Connections in the telephone basic menu by sliding and turning the COMAND controller and press to confirm.

Select Bluetooth Telephones and press to confirm.

Select the desired mobile phone in the Bluetooth® telephones list.

Select Options by sliding and press to confirm.

Select De-authorize and press to confirm.

A prompt appears asking whether you really wish to de-authorize this device.

Select Yes or No.

If you select Yes, the device will be deleted from the Bluetooth® telephones list.

If you select No, the process will be aborted.

Before re-authorizing the mobile phone, you should also delete the device name MB Bluetooth from your mobile phone's Bluetooth® list.