2018 CHRYSLER PACIFICA PLUG-IN HYBRID Engine And Engine Cooling Problems

The contact owns a 2018 Chrysler Pacifica Hybrid. The contact stated that upon starting the vehicle, the messages "Service Hybrid System" and "Service Shifter" were displayed. Additionally, the check engine warning light was illuminated. The vehicle was taken to the dealer, where the software update was completed under Chrysler Campaign Number: A14; however, the failure persisted. The check engine and the MIL warning lights were illuminated. The vehicle was taken back to the dealer, where Chrysler Campaign Number: Z11 was performed. The contact stated that the vehicle failed to start intermittently. The vehicle was taken to the dealer, where it started after 45 hours. The check engine warning light was illuminated. The dealer received assistance from the manufacturer’s engineers; however, the failure could not be duplicated. The failure persisted with a beeping sound activated. The dealer diagnosed that the vehicle speed signals, the Coolant Bypass Valve 'B' Control Circuit, the...