That happened on my old truck, was more frequent after going to the car wash or when snow was melting on windshield. It was random though. The dinging means your air bags won't work. The 3 rams Iv'e had have never deployed air bags despite rear ending a newer impala and bowing my front bumper into a u-shape. And on another time I totaled a 01 ram and two other vehicles. Was going 35 to 40 when I hit the rear corner of a parked car.
Cruise control problem would be a separate issue.
Air bags are controlled from a control module buried above the center hump and below the dash, I think.
Last edited by ReadRam; 08-08-2014 at 08:59 PM.