The problem happens intermittently and not all the time. I will be driving on the highway or in the city and sometimes when I barely touch the gas pedal my car will accelerate at high speeds, and the RPM gauge will go all the way into the seven mark and it Turns red and it starts beeping and the only way to get that off is for me to let off the gas pedal and come to a stop and then shift it from drive to park and then that-??ll usually fix the problem. And other times when I-??m on the highway. I will barely touch the gas pedal and it-??ll accelerate at high speeds and I-??ll have to go from the gas pedal to having to slam my brakes on to avoid hitting the vehicle in front of me. A friend of mine who had driven my vehicle, called me and asked me if I noticed that it was doing that as well and I explained to her that I I was aware. I have not taken it to the dealership yet for that problem yet however, I do have an appointment made. I-??m just waiting on them to find me a loaner vehicle that will seat my six person family because I cannot drive a different vehicle that does not fit my whole family.

- Phoenix, AZ, USA

I rented a 2023 Jeep Grand Cherokee at our local airport (Monterey, California) and drove it to Los Angeles and back for a total of about 700 miles over four days. I am an experienced driver and have been working on cars all my adult life. On several occasions, I attempted to the use the cruise control function to set a fixed speed for my journey. In doing so, I would first turn cruise control ON, accelerate to the desired speed, then MOMENTARILY press the SET button, at which point the vehicle would 'remember' my current speed and maintain this speed indefinitely. Nothing unusual about this, and it's how I've used cruise control in multiple cars over the years. Now, as in a lot of cruise control systems, one may use the SET button to cause the vehicle to accelerate, instead of pressing on the gas pedal. This is also a common way of doing things. One holds down the SET button, the vehicle increases speed, and once the vehicle gets to the desired speed, one releases the button and the current speed is maintained. But not in this Jeep Grand Cherokee. Instead, I found that if I pressed and held down the SET button for a few seconds that the vehicle would CONTINUE TO ACCELERATE long after I had released the SET button. For example: Traveling at 75 mph, I held the SET button for two or three seconds and released it. The vehicle began to accelerate at about two seconds, but continued accelerating for a period of twenty seconds, until I finally stepped on the brake, at which time the vehicle had reached 91 mph. In my run to LA and back, I tested the system several times. In the above example, I used my cell phone to make a video recording of the event. I'm glad to share this with NHTSA staff. My general belief is that this is not a one-off defect. It is the way the system is designed to behave, and it's unsafe. There are a few comments on the web pertaining to 2021 & 2022 Jeep products that support what I have said here.

- Salinas, CA, USA

The contact owns a 2023 Jeep Grand Cherokee. The contact stated while driving 70 MPH, the vehicle independently accelerated at high speeds and the contact lost control of vehicle and drove off the road. There was no warning light illuminated. The contact drove over metal fragments on the roadway causing damages to the front driver-??s and passenger-??s side tires before the vehicle came to a complete stop. The vehicle was towed to a Collision Center. The dealer was contacted but no assistance was provided. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was 11,000.

- Davisburg, MI, USA

Brand new car purchased on July 12, 2023, with 84 miles. In 19 days the car has been in service for 3 days to date, left stranded with all the listed issues. 1.Navigation screen randomly goes blank/black while driving 2.Audio Bluetooth connection randomly not allowing me to hear or be heard by caller 3.Rear AC system is not blowing air, even when front AC is set to lowest setting 4.Cell wireless charging blue light, but there is no actual charging happening 5.USB plugin not actually charging 6.Driver Assist lanes disappearing 7.Auto Drive setting stuck on D2 while driving 8.Acceleration became erratic, to the point where the car would not start 9.Randomly slow to break and accelerate. 10.Average MPG is between 15 and 16 11.Driver's dashboard becomes erratic, and dimly

- Moosic, PA, USA

The vehicle while in cruise set at 70mph accelerated to nearly 90mph and would not disengage even when brake applied, had to turn vehicle off. It has done this twice almost causing an accident. Vehicle has also suddenly applied the brakes very hard while driving approx 55 mph, nothing in front of vehicle. Apparently vehicle was applying the brakes because when we reached home the brake rotors were glowing cherry red. Dealer has looked at it once and said in is probably our pedal getting stuck on the floor mats. I did not have foot on any pedal while in cruise. This last time no check engine light cam on.

- Clarksville, AR, USA

We have been without service of the Grand Cherokee L vehicle for nearly 6 of the 11 weeks since we leased the vehicle. The four (4) incidents and -??repair attempts-?? to -??fix-?? the randomly/sudden occurring mechanical and electrical problems were inter-related and causal to the mechanical and electrical blackout troubles. 1.02/27/23 Purchase 2.03/20/23 631 total miles traveled. Dash board blackout. a.Service Dept -??reset software-??. 3.03/31/23 912 total miles traveled. Complete dashboard, radio and navigation blackout a.Service Dept did not experience random failures, -??therefore no repair action was warranted-??. 4.04/01/23 930 total miles traveled. While traveling at approximately 45 mph vehicle suddenly seemed to drop gears - the rpm went from 2k up to 6k, the suddenness of the drop of gears had our seat belts tightening. pulled the car to the side of the round and car remained at 6k rpm. I turned the car off, waited a few seconds then restarted the vehicle and proceed home. 5.04/02/23 after starting the car remotely car literally would not get out of automated start mode. I had to turn the vehicle off, wait a couple of minutes before it would start again. In driving the vehicle to the repair shop the power went out of the radio/gps/etc system again. a.Service Dept found RADIO with internal failure. Ordered replacement radio.-?? b.On inquiry, Service stated the CAM bus (software version -??AG-?? was replaced with updated -??AI-?? version.) 6.04/26/23 1,051 total miles traveled. On exiting a parking lot, I tried to accelerate into traffic, the RPM increased but with zero forward motion. I pressed the accelerator to the floor, the RPM increased but zero forward motion. I then released the accelerator, the RPM correspondingly decreased - still no forward motion. Then reapplying pressure - slowly to the accelerator - the vehicle began to roll forward but at an EXAGGERATED slow pace. I slowly rolled across the traffic lane and forward "running rough".

- Easton, CT, USA