See also:

What to do if...
Only a black screen is visible. Switch on the system. There are no options available on the screen. Replace remote control batteries. Radio stations or TV channels are grayed out and c ...

Environmental conditions
► Say the commands, numbers, and letters smoothly and with normal volume, emphasis, and speed. ► Always say commands in the language of the voice activation system. ► When selec ...

Malfunction
HDC is temporarily unavailable in the following situations due to a high brake temperature: ▷ The LED in the button and the display HDC go out during HDC operation. ▷ The LED in the ...