The contact owns a 2021 Jeep Cherokee. The contact stated that while driving 40 MPH, the vehicle's wheels locked up. The contact sustained injuries to the neck and whiplash and pain. The service 4WD warning light was illuminated after the failure. The contact stated that the failure was related to NHTSA Campaign Number: 26V290000 (Power Train). The vehicle was towed to the local dealer. The dealer diagnosed the vehicle and determined that the failure was caused by a catastrophic PTU failure. The vehicle was not repaired. The dealer was able to obtain a loaner vehicle. The manufacturer opened a STAR case and determined that there was no coverage on the vehicle for the failure. The failure mileage was approximately 62,000.