Help sound from my vehicle

Whenever I turn on the ignition when I switched the ignition on for the last 1 week, I was giving a warning sound like DIIN, I wonder if there was anything like this before, if there is no sound, I am wondering if it was a failure sound or something. 2012-04-03 12:38:43

Whether the road computer adjustment button or the automatic headlight switch is stuck, what is your vehicle?

I don't have a trip computer, my car 206 & nbsp;

1-If one of the doors is left open (not fully closed) in your vehicle, it warns, if the door is open, you can also see it on the middle screen (clock, calendar screen), and it flashes in the light inside your car (front light, interior light in the car),

any warning ... if the malfunction lamp is not on, shake it ..