Activating and deactivating Connected Safety
For Connected Safety to be able to share information on road conditions with other vehicles, the function needs to be approved in Volvo privacy settings.
Privacy settings
Profile not logged-in:
Press 
in the centre display.
in the centre display.Press Privacy
Then tap on Privacy and approve Connected Safety.
Profile logged-in:
Press in the centre display.
in the centre display.Press Profiles.
Then tap on Privacy and approve Connected Safety.
If there is no Internet connection, your own car will still inform you, the driver, that slippery driving conditions have been detected by your own car. For Connected Safety to work fully, your own car needs to be connected to the Internet.