The contact owns a 2015 Ram 1500. The contact stated while coming to a stop, the brake pedal was depressed due to the vehicle in front abruptly stopping with the ABS warning light illuminated. On several occasions, the brake pedal felt abnormal when depressed. On another occasion, the contact stated that the vehicle accelerated up to 30 MPH which caused the contact to rear-end another vehicle. The air bag did not deploy. No injuries were sustained, and no medical attention was provided. A Police report was filed with the Florida Highway Patrol and the report number was not provided to the contact. The vehicle was not towed. The vehicle was taken to an independent mechanic where it was diagnosed that the ABS module failed and needed to be replaced. The vehicle was not repaired and the contact was informed that no after-market parts were available. The dealer was not contacted. The vehicle was not diagnosed or repaired. The contact referenced an unknown recall related to the brake booster failure however the part was not available. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 188,635.