The contact owns a 2014 Ram 1500. The contact stated that while driving at undisclosed speeds, the brakes simultaneously activated, and the rear end of the vehicle fishtailed. The ABS warning light was turning on and off independently. The vehicle was taken to the local dealer, where it was diagnosed and determined that the ABS had malfunctioned. The contact was informed that the ABS module was on backorder. The vehicle was not repaired. The manufacturer was contacted and opened a case. The failure mileage was approximately 90,000.