alert sound

We have started to get a soft double Boing sound periodically while driving around. We are at or under the speed (typically suburb driving). This is relatively new sound. Not as nearly as frantic an alert as the 5 tone "Do You SEE that CAR" alert… We are running with recently installed...

Sometimes, when I get in my MX, I hear three "Bongs" about a second apart. Happened twice today while I was running errands & making multiple stops. I've heard this before many times, and there's never any message displayed when it happens. So I spent about two hours total on hold this...