If you are having problems with the display, such as it freezing or the car not being able to connect to the internet, restarting it might be a way to resolve these issues.
To restart the display, the car must be at a standstill with the parking brake applied.
Simultaneously press and hold the decrease set speed 
and decrease volume 
buttons on the steering wheel until the display changes.
and decrease volume buttons on the steering wheel until the display changes.The display restarts.