See also:

If a warning light turns on or a warning buzzer sounds...
Calmly perform the following actions if any of the warning lights turn on or flash. If a light turns on or flashes, but then turns off, this does not necessarily indicate a malfunction in the sy ...

Setting up a Bluetooth® enabled portable player
Registering a portable player in the Bluetooth® audio system allows the system to function. The following functions can be used for registered portable players: Functions and operation procedures ...

Horn
To sound the horn, press on or close to themark. ...