Volvo XC90 Owner's Manual page 257

10 Infotainment system
Menu structure – phone
The factory-set phone code 1234 is used until
you change to your own code. The phone code
10
is used to reset the call timer.
5.5. Sounds
5.5.1. Volume
Adjust the ring tone volume.
5.5.2. Ring signal
There are seven different ring tones.
5.5.3. On/Off
Mute radio.
5.5.4. Message beep
5.6. Traffic safety
5.6.1. Menu lock
Deactivating the menu lock allows access to
the entire menu while driving.
5.6.2. IDIS
If the IDIS function is deactivated, incoming
calls are not delayed, regardless of the driving
situation.
5.7. Factory default
Reset the system's factory settings.
256