Not familiar with my Sub. yet... while driving, a single chime sounds about every 30 seconds....no lights, no messages, just a single chime....any ideas....thank you.

 

Seatbelt?

 

Welcome to the forum.

Turn signal left on? Why not let the dealer check it out?

 

maybe a door, lift-gate or lift-glass not fully closed?
Low fuel?
You and your front passenger wearing a seat belt?
front seat passenger shifting in seat or boarder line weight causing the front air bag to enable/dis-able? (I'm not sure if it chimes for this, but I know when one of my pre-teen kids get to squirming around in the seat I see the air bag light off and on but I don't think it chimes at least not on my 07..)