2018 Jeep Grand Cherokee electrical problems

Filed Aug 31, 2026 · Electrical, Engine · AZ

Subject: 2018 Jeep Grand Cherokee – Sudden Loss of Power, PCM Failure, Electrical Failures, and Concern Regarding Recall-Related Symptoms I am filing this complaint because my 2018 Jeep Grand Cherokee experienced a sudden and unexpected loss of power while I was driving, and I am very concerned about the safety implications and the possible connection to the recall-related electrical problems associated with this vehicle. Before the final failure, my Jeep had been experiencing electrical and starting problems. The alternator failed, the batteries went bad, and I had already paid for multiple diagnostics and repairs. At the time, we did not understand that these problems could potentially be leading to or connected with a PCM failure. I have spent approximately $800 on diagnostics and parts trying to determine and repair the cause of these issues. The most serious incident occurred when I was driving near a school and approaching a stop sign. The Jeep suddenly began losing power and would no longer operate normally. I did not receive an adequate warning that the vehicle was about to completely shut off. The dashboard/screen began flashing, electrical functions began going out, and the vehicle progressively lost power. I was able to slowly move the Jeep toward the right side of the road before it completely shut off. The Jeep then would not start again. This was extremely frightening because the vehicle lost power while I was operating it in an area where there were other vehicles and children nearby. I was concerned about my ability to safely get the vehicle off the roadway and about what could have happened if the Jeep had completely lost power in moving traffic or at a higher speed. The vehicle has since been diagnosed as having a PCM failure. I have already paid for diagnostics rather than simply bringing the vehicle in without any prior information about the problem. Despite this, the Jeep dealershiphas my vehicle now to determine if this is part of recall

Filed Aug 24, 2026 · Electrical, Engine · AZ

The Jeep was giving me a warning sign. It said stop slowly. Your jeep will shut off so I replaced the two batteries. As my Mechanic told me I replaced the alternator. I also replaced the ground wires. Nothing is making my jeep start. We ran the codes on the jeep and it came back as a U0100 code with the PCM system. No connection error. we looked up the recall information and a recall popped up for this 2018 jeep Grand Cherokee. I am being told that I am not affected by this recall.. the jeep was giving warning Saenz before I replaced the battery and alternator. After that. It did not give warning Saenz Anymore. It’s just completely Shut Off With no warning. Leaving me on the side of the road stranded twice. It will not start and it is reading these codes.

Filed Aug 11, 2026 · Electrical, Transmission · TX

The transmission goes into neutral. It has gone into neutral on the highway,local streets, also from a stop. From a stop in drive the electronic D on the instrument panel starts flashing. I turn on the hazards put transmission shifter in Park and start engine. This problem is intermittent, it can be cold or hot, it has happened 4x in 2 years. No accidents thankfully. The engine does not stall, the transmission goes into neutral.

Filed Jun 10, 2026 · Driver assistance, Electrical · IL

The Cruise control pacing/follow option does not slow down/break and will rear end/strike any vehicle. The auto breaking does not work. The touch screen constantly cycles randomly changing map directions, radio stations, heat and air conditioning, seat heating and cooling. Puts driver at risk due to constant changes and alert sounds.

Filed Jun 3, 2026 · Electrical, Lights · IL

Headlight beams do not function. Beam lights come on upon starting car then turn off moments after. Then I am driving done the street in complete darkness. I have taken the Jeep to the dealership of purchase ( Elmhurst Chrysler/jeep/dodge Elmhurst Illinois 630‑834‑8000 ) 4 times over several months. They have confirmed the problem. Two days ago they had me replaced the battery. There was NO messages or other warnings that the lights have failed.

Filed May 5, 2026 · Electrical, Engine · MA

I recently purchased a 2018 Jeep Grand Cherokee and began experiencing serious issues almost immediately after taking possession of the vehicle. The vehicle has stalled unexpectedly while driving on multiple occasions, including during active driving conditions. It also has difficulty starting and has shut off without warning. The vehicle has already undergone multiple repairs within a short period of time, including work related to the radiator, spark plugs, and ignition coil. Despite these repairs, the issues continue. This creates a significant safety concern, as the vehicle becomes inoperable without warning, especially during daily highway driving. I rely on this vehicle for transportation, and it is currently unreliable and unsafe to operate.

Filed Apr 24, 2026 · Electrical, Engine · IN

had a recall done in February and 3 weeks later the car would not start randomly no warning lights illuminated on the dash prior to being shut off and once it would start it threw 3 codes for p0850, u0100, and U1267 all related to the parts replaced in February for the recall for the 2nd time now regarding the same parts. and trying to get a reinspection done for the recall bc the parts seem to have failed and its been a living nightmare. and unsure why no warning lights were illuminated prior to the car not starting randomly

Filed Apr 21, 2026 · Electrical, Seats · NC

Electrical goes crazy when driving and parked , radio comes on, switches from AC to heat , on its own , calls people in my contact list , calls 911, screens goes blank at times , flashes on and off , heated seat on driver side gets way to hot , passenger seat ok so far , headlight keeps going out on passenger side fails to get it off heated seats at times or it freezes, it jumps from defrost to vent to floor , heat to AC , have to turn on AC when it rains to keep windows from fogging up. Hard to drive when it’s lighting up like a Christmas tree , radio won’t stay on same station , jumps from station to station , when on speaker phone it mutes the calls, or hangs up the person you are talking to. Navigation won’t work most of the time freezes up also.

Filed Apr 5, 2026 · Brakes, Electrical · CA

Recall on the hydraulic control unit/anti-lock brake system A brake light incorrectly resulting other drivers not receiving proper indication to stop or slow down which can cause a vehicle crash without prior warning. Call my local dealership and MOPAR and informed me that they still do not have the part to fix this recall. It has been more an an year and half without resolution. They have not inspected my vehicle as I did schedule an appointment but the dealership informed me that they is still no solution and would reach out. There has no warning lamps or messages that appears in my vehicle as of right now.

Filed Mar 25, 2026 · Electrical · 80,000 miles · AZ

The contact owns a 2018 Jeep Grand Cherokee. The contact stated that while driving at an undisclosed speed, the “Service air Suspension” warning light was illuminated. In addition, the contact stated that the headlights independently turn on and off, the doors independently locked and unlocked, and the radio independently changes stations. In addition, the contact stated that the failure caused the headlights to burn out prematurely. The vehicle was taken to the dealer; however, the failure was not duplicated. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The contact was later informed that there was moisture in the wires. The contact was informed that the moisture had been cleaned from the wires. The contact was informed that the vehicle was repaired. The contact disagreed with the diagnostic test and the repair. The contact stated that the failure was a known failure with the vehicle. The manufacturer was not made aware of the failure. The failure mileage was approximately 80,000. The VIN was unavailable.