Operating instructions

Reconnecting automatically
Audio 20 always searches for the last mobile
phone connected.
If no connection can be made to the most
recently connected mobile phone, the system
searches for the mobile phone that was con-
nected before that one.
Switching between mobile phones
If you have authorized more than one mobile
phone, you can switch between the individual
phones.
i
You can only switch to another authorized
mobile phone if you are not currently mak-
ing a call.
X
Select the mobile phone in the Bluetooth
®
telephones list by turning cVd the con-
troller and press W to confirm.
The selected mobile phone is searched for
and connected if it is within Bluetooth
®
range and if Bluetooth
®
is activated.
Only one mobile phone can be connected
at any one time. The currently connected
mobile phone is indicated by the # dot in
the Bluetooth
®
telephones list.
De-registering (deauthorizing) a
mobile phone
Mercedes-Benz USA, LLC recommends de-
authorization in Audio 20 as well as in the
mobile phone. Subsequent authorization may
otherwise fail.
X
Press the % button on Audio 20.
X
Select Connect DeviceConnect Device in the telephone
basic menu by sliding VÆ and turning
cVd the controller and press W to con-
firm.
The Bluetooth
®
telephone list appears.
X
Select the desired mobile phone in the
Bluetooth
®
telephones list.
X
Select the list symbol to the right of the
entry by sliding VY the controller and
press W to confirm.
X
Select De-AuthorizeDe-Authorize and press W to con-
firm.
A prompt appears asking whether you
really wish to de-authorize this device.
X
Select YesYes or NoNo and press W to confirm.
If you select YesYes, the device will be deleted
from the phone list.
If you select NoNo, the process will be can-
celed.
i
Before re-authorizing the mobile phone,
you should also delete the device name MBMB
BluetoothBluetooth from your mobile phone's Blue-
tooth
®
list.
Displaying connection details
X
Press the % button on Audio 20.
X
Select Connect DeviceConnect Device in the telephone
basic menu by sliding VÆ and turning
cVd the controller and press W to con-
firm.
The Bluetooth
®
telephone list appears.
X
Select the mobile phone from the list.
X
Select the list symbol to the right of the
entry by sliding VYthe controller and
press W to confirm.
X
Select DetailsDetails and press W to confirm.
The following information concerning the
selected mobile phone is shown:
R
Bluetooth
®
name
R
Bluetooth
®
address
R
availability status (shown after a search)
R
authorization status
X
To close the detailed display: turn
cVd, slide ZVÆ, XVYor press W the
controller.
Telephony via the Bluetooth
®
interface
47
Telephone
Z