Why has my 2007 V50 decided to start locking the doors without my input?

 

does it happen when you slam a door or hit a bump or just randomly? (my old 850 wagon would lock itself occasionally when the tailgate was slammed). I'd think you either have a connector issue or something like radio interference in the FOB's transponder...

 

I went into the menu and un-marked the lock automatically choice. It is either by chance or un-marking the option was the fix but it hasn't done it since making that change.

My FOB does lay in a basket by the microwave so my I am getting some 2.4 ghz interference?