See also:

Faults in the system
If the information symbol illuminates and Park assist syst Service required is shown on the information display, this indicates that the system is not functioning properly and has been disengaged. ...

Buttons in the center console
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Day/Night mode
The screens can be set for three different lighting conditions: Auto, Day or Night. Press on the remote control and change the setting under Day/Night mode on the screen. See also page 251 f ...