2021 Jeep Grand Cherokee problems

“Vehicle: 2021 Jeep Grand Cherokee Overland, 3.6L V6 Incident Date: [XXX] Location: [XXX] Safety Complaint: On [XXX], while driving my 2021 Jeep Grand Cherokee Overland on [XXX], the vehicle suddenly lost accelerator response while traveling on the highway. The engine initially remained running, but pressing the accelerator pedal produced no response. Multiple warning indicators illuminated simultaneously, including the electronic throttle control, ABS, traction control, airbag, and four-wheel-drive systems. The vehicle also exhibited unusual electrical behavior, including unexpected activation of the high-beam headlights. The vehicle subsequently became completely inoperable and would no longer crank or start. The sudden loss of propulsion while traveling in highway traffic created a serious safety hazard and placed me at risk of a collision. This incident follows an extensive history of significant mechanical failures and repairs to this vehicle, including: Replacement of the cylinder head following repeated overheating and engine misfires. Complete transmission replacement following transmission-related failures. Replacement of the radiator and cooling fan…”

“Steering is erratic while driving. Car is shifting left and right by itself while driving down the road feeling like the tires want to go different directions from one another. Steering wheel makes noticeable movement on its own left and right while going down a straight smooth road.”

“Oil Filter Housing/Oil Cooler Failure Causing Oil and Coolant Contamination, Serpentine Belt Failure, and Engine Overheating My 2021 Jeep Grand Cherokee Laredo E, equipped with the 3.6L Pentastar V6 engine, has developed a significant oil leak originating from the oil filter housing/oil cooler assembly. A mechanic has identified this assembly as the source of the oil leak and confirmed that its failure is allowing engine oil to mix with the coolant. In addition to internal oil and coolant contamination, engine oil is leaking externally onto surrounding engine components, potentially including the serpentine belt and pulley system. The vehicle recently experienced a complete serpentine belt failure while driving, resulting in engine overheating and requiring me to pull over immediately to prevent additional engine damage. I am concerned that oil leaking from the housing assembly may have contributed to the premature deterioration and failure of the serpentine belt. The oil contamination of the cooling system presents additional safety concerns, including reduced cooling efficiency, damage to cooling system components, and the possibility of severe engine damage…”

“The contact owns a 2021 Jeep Grand Cherokee. The contact stated that while driving 5 MPH, the vehicle jumped. The contact stated that while driving 8–9 MPH, the vehicle jerked, and there was an abnormally loud sound coming from the vehicle. In addition, the air bag warning light was illuminated. The dealer was made aware of the failure. The failure was not duplicated. The vehicle was not repaired. The failure reoccurred. In addition, the contact stated that the transmission was replaced in 2025. The contact was informed that the air bag was not covered under unknown recall. The failure mileage was approximately 42,000. The VIN was unavailable.”

“I was driving back from the airport and as it began to get dark, it became apparent I had no headlights. I somehow managed to drive the last two hours home on parking lights and lights from other vehicles.I took it to a Chrysler Jeep dealership Goldies in Huntington, West Virginia. The exam that I put a bulb in the driver side. In the passenger side, the LED portion is still glowing, but is yellow green and they told me it would require a headline assembly which would call somewhere between 1500 and $2000. The bulb alone was just over $500. They told me that the filaments had cracked in the bulb despite no apparent damage to the vehicle. I owned an accurate T from 2008 to 2021 I and it never required new bulbs. I actually don’t do much nighttime driving so they could not have many hours on the lights. I don’t know what but something is wrong here.”

“I was driving 65 MPH on a highway in high traffic and the Fuel propulsion system failed without any lights or warning. It just stop responding to accerlation. It was extremely dangerous and CDOT had to come rescue us. We are lucky we were not hurt or killed. The 2021 Jeep Grand Cherokee is only 5 years old and has 46,000 miles on it. The fuel pump needs a complete replacement. It is months out of warranty but still there should be 50,000-100,000 miles left on this part.”