See also:

Using the infotainment system
If the infotainment system is on when the ignition is switched off, it will come on automatically the next time the ignition is put in mode I or higher and continue using the same source (FM1, ...

Getting started
Voice control button on the steering wheel ...

Operating the tailgate manually
The power tailgate can be disconnected from the vehicle’s electrical system by quickly pulling the outer handle twice. The tailgate can then be opened/closed manually. ...