Doors unlock on their own!

I have a 2002 Sonata. For the last month or so, occasionally all of the locks on the doors will unlock while I'm driving! Any ideas? Is this something that would be under warranty to look at? It's got around 53,000 miles. Thanks for any input.

Possibly a broken wire or a loose connection somewhere in the system, but finding this could be difficult!
With regard to warranty, this would depend on when on when the car was registered, as the five year warranty did not start until sometime after September 2002.
Best of luck, Chris.