2019 Jeep Grand Cherokee: start-stop system problems

Filed Mar 9, 2026 · Engine · 76,000 miles · NY

The contact owns a 2019 Jeep Grand Cherokee. The contact state while driving at various speeds, the engine overheated and there was a misfire coming from the engine. The check engine warning light was illuminated. The message that the Auto START/STOP system needed to be serviced was displayed, and that the engine was overheating. The vehicle was taken to the dealer on several occasions, and the camshaft, the water pump, and the EGR were replaced; however, the failure persisted. The vehicle was taken back to the dealer, where the camshaft phasers and the oil control valve were replaced. The vehicle was repaired. The manufacturer was not contacted. The failure mileage was approximately 76,000.

Filed May 30, 2025 · Electrical · NC

In the cold weather, usually under 40degrees, sensors come on alerting me that stablisation is disabled, auto start/stop is disabled, check engine light comes on, parking brake illuminates and does not turn off while driving, cruise control does not work, radio information cluster intermittently works etc. It's seems to be all electrical. I have taken it to the dealership several times and they can't figure out what the issue is. At first they said the auxiliary battery was bad and I paid over $400 for a new battery and still have the same issues.

Filed Feb 7, 2025 · Brakes · 79,881 miles · MD

The contact owns a 2019 Jeep Grand Cherokee. The contact received notification of the federal safety agency Campaign Number: 24V838000 (SERVICE BRAKES, HYDRAULIC); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated while driving 65 MPH on the highway, the vehicle started to feel heavy. The contact stated that several unknown warning lights illuminated. The vehicle was driven to an independent mechanic to be diagnosed. The independent mechanic diagnosed the vehicle with ABS communication error, power train detecting a faulty signal from the master pressure, brake pressure center stored in the module, wheel speed sensor error power train ABS module fault. The vehicle was not repaired. The electronic stability control was deactivated, Auto START/STOP was deactivated, and the check engine warning lights alternated every other day. The manufacturer was made aware of the failure. The failure mileage was approximately 79,881. VIN tool confirms parts not available.

Filed Apr 3, 2023 · Fuel system · 56,000 miles · ID

The contact owns a 2019 Jeep Grand Cherokee. The contact stated while driving approximately 57 MPH, the vehicle began to lose motive power. The contact stated she depressed the accelerator pedal to the floor and the vehicle kept losing motive power. The contact stated that she was able to pull over and turned the vehicle off. The contact stated that the vehicle turned on only after multiple attempts; however, the vehicle went into "LIMP Mode" and would not accelerate to exceed 5 MPH. The vehicle also stalled several times within a few miles. The contact stated that the Auto START/STOP, and check engine warning lights were illuminated. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the vehicle had bad gasoline and had fuel cleaner added to fuel tank. The vehicle had been repaired. The contact stated that the failure reoccurred, and that the vehicle was towed back to the same dealer and was diagnosed that the fuel pump had failed and needed to be replaced. The vehicle had not been repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 56,000.

Filed Sep 8, 2021 · Electrical · 23,000 miles · PA

The contact owns a 2019 Jeep Grand Cherokee. The contact stated that the STOP/START system failed to operate as designed. The contact stated that while driving with the STOP/START system engaged and the vehicle was stopped at a stop sign or a traffic light, the STOP/START system failed to engage the engine. The contact had to put the vehicle in park and restart the vehicle. The failure was experienced twice. The contact stated that the STOP/START system light illuminated on the instrument panel and stated that the system needed to be serviced. The vehicle was taken to the dealer do be diagnosed. The mechanic failed to retrieve a fault code. The dealer also tests drove the vehicle and was unable to duplicate the failure. However, the contact stated that the Mopar computer sent an email alert that the STOP/START system needed to be serviced. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was 23,000.

Filed Aug 5, 2019 · 5,998 miles · VA

While waiting stationary to turn on a city street, the car was in the auto start/stop mode. As soon as I took my foot of the brake to begin turning, the car completely shut off and started flashing warnging lights and cycling through several warnings like fcw indicator disabled. The car also told me the lane departure sensor was turned off as well. The car continued to flash these lights and cycle through multiple other warnings and refused to shut off. At one point the car even turned on the windshield wiper blades by itself.

Filed Jun 2, 2019 · Electrical · 3,000 miles · VA

Stop/start system warning light when the car was stationary at a traffic light the car turns off at stop light and does not restart as it is supposed to when the accelerator is pushed. All items on the shift indicator begin to flash. Car must be turned off and restarted. The stop/start system warning light stays on. This has happened three times and is extremely dangerous.