The contact owns a 2015 Jeep Cherokee. The contact stated that the 4WD Service light was illuminated. The vehicle was taken to a local dealer where the vehicle was diagnosed and the contact was informed that the PTU, timing cover, and the head gasket were faulty and needed to be replaced. The vehicle was not repaired. The contact referenced NHTSA Campaign Number: 20V343000 (POWER TRAIN) as the possible cause for the failure. The manufacturer was notified of the failure. The approximate failure mileage was 69,000.