See also:

Malfunctions involving individual CDs/ DVDs
If malfunctions occur only with particular CDs/ DVDs, this can be due to one of the following causes. Copied or self-recorded CDs/DVDs ▷ Possible reasons for malfunctions with home-recor ...

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 selecting a radio ...

Functional requirements
The system must have been initialized when the tire inflation pressure was correct; otherwise, reliable signaling of a flat tire is not ensured. Initialize the system after each correction of th ...