Why do I get Random Beeps in my 2010 Lincoln MKX?

My 2010 Lincoln MKX has random beeps while driving.  It is very annoying and there is
no reason for this to happen.  I get no indicators that some thing is wrong.  I had it in the
dealership they didn't hear it.  grrrr...I posted and paid a website expert who gave my a lot
of mumbo jumbo, but no solution to the problem.  It is just a periodic random beep.  I
thought it was a beep that sounded when the compass changed directions, but that isn' it
either.  It is very annoying and irritating to a point that I am about to trade this car in at
40K miles...