2018 Jeep Grand Cherokee electrical system problems
339 owner complaints to NHTSA about the 2018 Jeep Grand Cherokee cite electrical system, 40% of all 855 complaints for this model year. NHTSA also lists 2 recalls on this component.
“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…”
Owner complaint to NHTSA·Filed Aug 31, 2026·Power train, Electrical system, EngineODI 11761114
“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.”
Owner complaint to NHTSA·Filed Aug 24, 2026·Power train, Electrical system, EngineODI 11759288
“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.”
Owner complaint to NHTSA·Filed Aug 11, 2026·Power train, Electrical systemODI 11756332
“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.”
Owner complaint to NHTSA·Filed Jun 10, 2026·Electrical system, Forward collision avoidanceODI 11743140
“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.”
Owner complaint to NHTSA·Filed Jun 3, 2026·Electrical system, Exterior lightingODI 11741948
“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.”
Owner complaint to NHTSA·Filed May 5, 2026·Electrical system, Engine, Fuel/propulsion systemODI 11735876
Showing 6 of 339 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 3, 2026NHTSA vehicle page
Chrysler (FCA US LLC) is recalling certain 2018 Jeep Renegade, Compass and Grand Cherokee, RAM 1500 and Promaster, Fiat 500x, Dodge Journey, Challenger, Charger and Durango and Chrysler 300x vehicles, 2017-2018 Jeep Wrangler, Dodge Grand Caravan and Chrysler Town and Country vehicles and 2018-2019 Jeep Cherokee and 2018 Chrysler Pacifica and Pacifica Hybrid vehicles. The powertrain control module may be equipped with a voltage regulator chip in the circuit board that may fail, causing a stall or a no start condition.
Chrysler (FCA US LLC) is recalling certain 2014-2018 Dodge Journey, Charger and Durango, RAM 2500, 3500, 3500 Cab Chassis (more than 10,000lb), 4500 Cab Chassis and 5500 Cab Chassis, Jeep Cherokee and Grand Cherokee and Chrysler 300, 2014-2019 RAM 1500, 2015-2018 Dodge Challenger, 2015-2017 Chrysler 200, 2016-2018 RAM 3500 Cab Chassis (less than 10,000 lb), 2017-2018 Chrysler Pacifica and 2018 Jeep Wrangler vehicles. These vehicles are being recalled to address a defect that could prevent the cruise control system from disengaging. If, when using cruise control, there is a short circuit within the vehicle's wiring, the driver may not be able to shut off the cruise control either by depressing the brake pedal or manually turning the system off once it has been engaged, resulting in either the vehicle maintaining its current speed or possibly accelerating.