The contact owns a 2017 Jeep Cherokee. The contact stated that while driving at an undisclosed speed, a warning message displayed reading ‘Service the shifter and 4WD.’ The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The Critical Fault detected warning light was illuminated. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 20V343000 (Power Train), but the VIN was not included. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA hotline for assistance. The failure mileage was 86,000.