2021 Jeep Grand Cherokee Engine Problems

Your engine oil level dropped significantly between oil changes with no warning lights or visible leaks, even though the oil change was done early. A service provider indicated that V6 Pentastar engines in Chrysler vehicles may have a defective seal causing excessive oil consumption. Excessive oil loss can lead to engine damage or sudden failure while driving, which is a safety concern.

There is a delay in my car starting when I push the start button. When doing some research online to see what the possible issue might be I found that other cars with the same make/model/year had this issue and was apart of a recall for the fuel pump relay.

My 2021 Jeep Grand Cherokee will not start / turn over and if it did the car will shut off. This has been happening for the past week or so. I took it to my local Jeep dealership today and they are stating that both the fuel pump and the water pump need to be replaced. They also stated that the fuel pump recall does not apply to my vin. In addition to my fuel pump needing to be replaced, my water pump has failed too. It is severely leaking water. My Jeep is only 4 years old with barely 70,000 mi and is experiencing severe safety issues. I cannot drive it as it could shut down unexpectedly while I am driving thereby posing a major safety risk.

The vehicle (2021 Jeep Grand Cherokee) was on the road for about 90 minutes when the engine shut off for no reason at 65 mph in noon rush hour traffic. We were in the left lane and had to coast through 2 lanes of traffic and an exit approach while trying to avoid a deadly crash with high-speed traffic. There were no warning lights or alarms on in the car. The only message was that we needed to put the car in park to restart. We finally came to stop and waited a minute and restarted the engine and were able to make it home. I called the dealer, and the next appointment was 3 weeks out. I tried driving during a rainy day before the dealer appointment and the vehicle shut off 3 times in 3 blocks, so I returned home and waited for the appointment date. As of today, the dealer says there are no codes and in 2 test rides the car is running just fine. This is a huge safety issue and I hope that we can get help before anything happens again.

The auto stop/start system,shuts down the engine when waiting to pull out onto a busy street.it has a shut down switch,but it gets rest everything the ignition is turned on.there is no way to perfectly shut off.

One day I smelled something burning after driving. I didn't see anything the first time but i kept smelling the burning smell and noticed a few days later oil dripping from underneath the car. Oil made its way ALL under the car, it traveled on various parts and created an oil coating. I made an appt to the Jeep dealership (Keffer jeep in Charlotte, NC) and they said the oil cooler failed. There were no obvious signs other than a slow leak from under the car, no warning lights, no change in performance. However had I not noticed coolant could have mixe in with oil and ruined the engine. Less than 32,000 miles on the car when it occured.

It has been observed that the antifreeze and oil are intermixing in the antifreeze reservoir, causing the check engine light to illuminate and the system to register a code of PC304. This particular code is indicative of a cylinder misfire, which can cause the car to stop functioning properly and eventually lead to potential engine damage. To resolve this issue, it is imperative to replace the oil cooler filter adapter and flush the engine. This will ensure that the antifreeze and oil are no longer mixing and the engine is functioning efficiently. Therefore, it is highly recommended to take immediate action and get the necessary repairs done to avoid any further damage to the engine.

The contact owns a 2021 Jeep Grand Cherokee. The contact stated that while driving at 5 MPH, the vehicle independently shut off while pulling out in traffic. The vehicle was able to be restarted after a while. No warning light was illuminated. The vehicle had not been diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was unknown.

The contact owns a 2021 Jeep Grand Cherokee. The contact received notification of NHTSA Campaign Number: 22V554000 (Engine and Engine Cooling) 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 manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

The contact owns a 2021 Jeep Grand Cherokee. The contact stated that upon start of the vehicle; an abnormal, clamoring sound would emit from the engine without warning. The vehicle was taken to the dealer where they replaced 2 cam shafts and other engine parts; however, the failure persisted. The vehicle was taken back to the dealer a second time where a total of 18 different engine parts were replaced but to no avail. The vehicle was taken back to the dealer for a third time where it was kept for an extended period; she was later informed that there was no fault with the vehicle. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 24,000.

Check engine light comes on vehicle shuts down has occurred 2xs now with in 25, ooo miles!

The contact owns a 2021 Jeep Grand Cherokee. The contact stated that while driving at various speeds, the vehicle intermittently hesitated and stalled. The vehicle was taken to the dealer where it was diagnosed that an unstated software needed to be updated. No warning lights were illuminated. The software was updated; however, the failure recurred. The manufacturer was not notified of the failure. The failure mileage was approximately 21,000.

Engine mounts have failed. According to the FCA, they have a very large backorder on these parts, as this is an extremely common issue. Initially they denied that the motor mounts were an issue; however, since the major back order, they have reversed that claim. They also stated the motor mounts would be at the dealership on the 13th of October; however, they now state that they have no date due to major back order. They stated no recall was issued because it's not a safety hazard; however, according to multiple certified mechanics, this is a major safety hazard which can result in the motor shifting and knocking parts out from under the vehicle, causing pieces to hit the vehicle itself or other vehicles on the highway. It also will cause major damage to the engine and other components under the hood of the vehicle. The FCA still has not agreed to this claim, even as some of their own Mopar mechanics also stated the same information regarding it being a safety hazard.

The contact owns a 2021 Jeep Grand Cherokee. The contact stated that while at a stop sign or light the start-stop function engaged. The vehicle was randomly turned off. The start and stop function indicators are active and the hood is open. The vehicle was taken to the local dealer where the vehicle was driven for three weeks however, they were unable to duplicate the failure. The vehicle was not diagnosed or repaired. The contact stated the failure recurred. The manufacturer was not notified The failure mileage was approximately 200. Consumer stated the vehicle is was unable to be fixed after several attempts of being in the shop 6 wks.

TL* THE CONTACT OWNS A 2021 JEEP GRAND CHEROKEE. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 30-45 MPH, THE TRANSMISSION FELT AS IF IT WAS SLIPPING. THERE WAS NO WARNING LIGHT ILLUMINATED. THE CONTACT PULLED OVER TO THE SIDE OF THE ROAD AND TURNED OFF THE VEHICLE. THE VEHICLE WAS TOWED TO IMPERIAL CARS (8-18 UXBRIDGE RD, MENDON, MA 01756; (800) 526-2886) TO BE DIAGNOSED. THE CONTACT WAS INFORMED OF SEVERAL CYLINDER MISFIRES. THE CONTACT WAS INFORMED THAT THE ENGINE NEEDED TO BE REPLACED. THE REPAIR WAS STILL PENDING. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND A CASE WAS FILED. THE APPROXIMATE FAILURE MILEAGE WAS 500.

MY GRAND CHEROKEE HIGH ALTITUDE 2021 START JERKING DURING ACCELERATION AT 500 MILES APROX. THEN THE PROBLEM WAS MORE CONTINUES AND IN PARKING OR NEUTRAL THE CAR START JERKING, VIBRATION ENGINE AND EXHAUST SMELL WEAR. CHECK ENGINE FLASING. CODE P0304 WAS REGISTERED.