Jeep Grand Cherokee oil consumption problems

Filed Oct 26, 2026 · Engine · OK

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 or unexpected vehicle disablement. The combined risks of external oil leakage, internal coolant contamination, serpentine belt failure, and engine overheating create a potentially dangerous situation, particularly during highway driving. I am concerned that the oil filter housing/oil cooler assembly may have an underlying design or manufacturing defect. I am requesting that the federal safety agency investigate this issue in 2021 Jeep Grand Cherokee vehicles equipped with the 3.6L Pentastar engine and determine whether a safety recall or other corrective action is warranted.

Filed Sep 30, 2026 · Engine, Wheels · IL

The tire pressure monitor system, the egr cooler. I had to change the egr the thermostat twice the engine the radiator the water pump and two oxygen sensors. The egr cooler is not recalled for my year but my truck was doin the same thing. The car still has a burning oil smell when the heat is on and the air don’t work

Filed Jan 11, 2026 · Engine · MI

I am reporting a potential safety-related defect involving my Chrysler vehicle equipped with a V6 Pentastar engine. During a routine oil change a few weeks ago, I was informed by the service provider that my engine oil level was extremely low, despite the oil change being performed earlier than the recommended interval. This was alarming, as the vehicle had not shown any warning lights or obvious leaks. The service provider advised me that Chrysler vehicles with the V6 Pentastar engine have a known issue related to a defective engine seal that can cause excessive oil consumption. I was told that Chrysler is aware of this issue, that it has been the subject of class action lawsuits, but that it has not been formally recalled. I have since submitted my information to a class action settlement related to this issue but have not received any response. Due to the risk of engine damage, sudden failure, or safety hazards while driving, I believe this issue should be formally reviewed and documented by the federal safety agency. I am submitting this report to help document a potentially widespread defect that may affect vehicle safety and to ensure appropriate action is taken to protect consumers.

Filed Jun 23, 2024 · Engine, Fuel system · MN

My oil cooler has failed and it caused oil to mix with my coolant and also causing a bad coolant leak. It over heats to car and my warranty will not cover ANYTHING! This is a major problem with diesel jeeps and the oil cooler needs to be recalled also. It can catch on fire and is a real safety hazard. I’ve tried multiple times to fix the oil cooler and leak. Jeep will not fix my recall at all. A recall that is on the vehicle and can cause a fire!

Filed May 28, 2024 · Engine, Transmission · MI

Oil filter housing failure, this caused oil to be expelled all over the engine compartment. The oil could have hit hot exhaust and caused a fire, engine lost power due to no oil. Taken to Jeep dealer and they told me this is a common issue on this style motor. No symptoms prior to part failure.

Filed Sep 3, 2023 · Engine · LA

The oil cooler located on top of the engine intake failed and began leaking oil. The part of the oil cooler that failed was made out of plastic. The top of the engine gets very hot which likely caused the plastic to become brittle and fail. Oil began leaking all over the motor and onto the exhaust pipes. I could smell burning oil and worried it could cause a fire once I realized what was happening. The repair shop said that they fix so many of these and they are not even a dealer, nor could they understand how a recall has not been issued on this item. The component was not inspected by anyone other than the mechanics at the repair shop. The replacement was an aftermarket made out of aluminum and not plastic like the oil cooler that failed. There were no warning lamps indicating there was a problem. When I saw the oil under my vehicle and the smell of burnt oil on the exhaust pipes I brought the vehicle to the repair shop.

Filed Sep 3, 2023 · Engine · LA

The driver's side cylinder head failed and engine oil began leaking down the engine and onto the exhaust pipes. The cylinder head was kept by the dealership and is not available for inspection. My safety was put at risk of a vehicle fire from the fresh oil leaking onto the exhaust manifold and piping. I could smell the burning oil and saw it dipping under my vehicle. The dealer did not say that this was a systemic problem, but it is well documented on the internet that this is a common problem from this model (2015) Jeep Grand Cherokee. The component was not inspected by anyone other than the dealership that determined it had to be replaced. The engine light came on letting me know there was an issue with the engine. I brought the vehicle to the dealership within a few days.

Filed Jul 26, 2022 · Electrical, Engine · NY

My 21 Jeep Cherokee shipped from Detroit Stellantis HUGE cover up FLOOD car. My JEEP is 8 mons new. I leased it 12/7 contacted Uconnect on 12/13 for Powertrain Malfunction indicator light on. Dealer claims vehicle health reports aren’t accurate. At dealer 3/14/22 service found stored fault for oil, low oil, carpet was destroyed, getting oil changed at 2300 miles. Dealer only recorded oil change on car fax. 3/31st- June I filed a buy back claim w/ Chrysler. Chrysler denied. At dealer 6/11 code P060A, stop/ start doesn’t work, car stalls, radio turns up/down on its own, center consaul base popped out, burning Oil life rapidly. No work done. At dealer 6/14 ”faulty oil pump” said manager, car bucks on highway, car locked me out at 12:30 am called Uconnect they couldn’t bypass. They stated door was open still locked out, stranded multiple times, car will not start. Dealer has me reschedule get rental 6/21-6/29 to replace oil pump, and fix all issues. Dealer state My oil tank is full but dash says 41% oil .Electrical sys. is messed up Called lemon law atty, accepted case. Chrysler receives atty CLAIM whileJeep was still in the shop. dealer didn’t fix anything BUT ROTTED CARPET- OIL PUMP on back order CHRYSLER REFUSES to pay for loaner while oil pump is on back order. The car DOESN’T start. Pump to arrive late July. VM from dealer, Chrysler told dealer my vehicle is SAFE TO DRIVE w/ faulty oil pump. I called dealer to find out status of pump my Jeep needs another oil change at 5,000 mls & ENGINE LIGHT ON Dealer refused srvc b/c Chrysler told them about the lawsuit. Atty called dealer stated it’s a claim against Chrysler. Dealer still refused. My car won’t start,ENGINE LIGHT IS ON. TONS OF SAFETY ISSUES Called another Chrysler dealer VM they REFUSED to service Jeep. 7/23 took JEEP to 3rd Chrysler dealer found: PO6DA, B25AF-2A, B1561-13 Dealer SAID UNSAFE TO DRIVE! I HAVE NO CAR, NO $ CHRYSLER REFUSING TO PAY LOANER. Atty said this is FRAUD. Jeep won’t be in srvc 8/11 FRAUD

Filed Jun 7, 2022 · Transmission · MD

Oil cooler failure, causing oil to go into the coolant system and mix. Completely draining all oil from my engine and leaking from and unknow seal in the coolant system. At no time did my vehicle warn me of the issue. No check engine light, no overheating light and I drove my vehicle from home to work which is about 60 miles (salisbury, md to lewes, de) . This left me stranded at work and unknow damage to my vehicle because of no "caution" lights. The leaking oil could have caused an engine fire with all the oil draining out and into the coolant system and over heating my engine.

Filed Jun 3, 2022 · Engine · MI

On April 11, 2022, after driving home from work I noticed oil dripping onto my driveway. I opened the hood of the vehicle and discovered that my cooling system was completely filled with oil and there wasn't any noticeable coolant left in the system. I then checked the oil level via dipstick, and found there to be an extremely low level of oil in the engine. Prior to pulling into the driveway, there were no warning lights, no check engine light, or low oil lights on the dashboard. Nothing to indicate a potentially serious issue. The vehicle was then towed to a Jeep dealership for repair. The dealer indicated, both on the paperwork and over the phone, that the Engine Oil Adapter Housing (Mopar Part 68308741-AF) was leaking internally, causing the oil to be redirected into the cooling system and displacing the coolant (see attached invoice from Jeep). Most of the cooling system had to be replaced due to oil contamination. This part failure could have been catastrophic had I been traveling down the road or the freeway, as a loss of oil in the engine and a cooling system not properly functioning, could have caused the engine to fail while at speed leading to a loss of power steering and braking, and possibly resulting in a crash. Additionally, as previously mentioned, no warning lights or indicators were visible at any time. From talking to the dealership and researching online, this part failure is common on all 3.2L and 3.6L Pentastar V6 engines. The dealership, at the time of my vehicles repair, had three other FCA/Stellantis vehicles in for the exact same issue. This component is made of plastic and is located directly on top of the engine block, and below the intake manifold. This area can get very hot and cause the plastic to become brittle and crack without warning. The original failed component was taken by the dealership, and I do not have it on hand. The vehicle has been serviced by the dealership, and it currently in working order. FCA is aware of the issue.