LiL mS LeX

Mine makes the same noise and its pretty annoying. But of course when you take it to the dealer, it doesn't make the noise. What is it?

just wanted 2 say hey 2 everyone i'm new 2 this site and im still learning how 2 use everything so far its a really helpful site...learned how 2 turn off that annoying beep when the seatbelt is not buckled and how 2 input the address while im driving...what good is the nav if u cant use it when ur driving? i get that it is a distraction when ur driving...but still...being able 2 use it while in motion is really convinient... well thats all for now -LiL mS LeX :)