The contact owns a 2017 Jeep Cherokee Trailhawk. The contact stated while driving at 40 MPH and going up a hill, the vehicle inadvertently stalled. The contact stated he veered the side of the road and switched gears to park. The contact stated as soon as he exited the vehicle, the vehicle rolled down and ran over his right arm. The contact stated his wife who was sitting in the passenger seat promptly depressed the brake pedal with her hands and the vehicle stopped. The contact sustained a bruised wrist but did not seek medical assistance. The vehicle was towed to the dealer who diagnosed that the power transfer unit had failed and the failure was related to the recall for NHTSA Campaign Number: 20V343000 (POWER TRAIN). The manufacturer was notified of the failure and advised the contact that they would follow up with the dealer. The vehicle was not repaired. The approximate failure mileage was 128,000.