Car Accelerates On Its Own problems of the 2011 Jeep Grand Cherokee

Two recent events, when braking in slow traffic there was sudden acceleration with foot on brake. Even with stronger and forceful brake pressure the Jeep was still moving and wanting to keep going with engine revving. Had to shift into neutral and then engine quit revving and things returned to normal. I have this Jeep 10 years and am very familiar with it. Never any wrecks. No medical problems. The floor mat was not interfering with any pedals. The dealership was not aware of any recalls about this problem but they serviced the throttle-body after the first incident. This apparently was not the problem as the unintended acceleration when braking occurred a second time. In googling this problem a blog mentioned this could be the Jeep brake-booster which has been recalled and was replaced on my Jeep 2 years ago. Google brings up this sudden acceleration as a common search but no clear answers. I know about the Toyota acceleration problem in the 1990's, that they never found or admitted anything mechanical and assumed it was granny using two feet. This is absolutely a mechanical problem with my 2011 Jeep. Will take to dealership but they already said they aren't aware of this being a Jeep defect. I registered this complaint with Jeep customer care and they said if the dealership can't find the problem to call them back and they will work with the dealership to resolve this. They worrisome thing is they will do something for $1000 and then I have this brake/acceleration occur a 3rd time and it causes a crash!.

On may 28, 2016 while navigating my driveway, my car suddenly accelerated forward and crashed into the back wall of my garage. Damage was done to my home and my car. I had no control over the vehicle. Hitting the brake and trying to hit the ignition button did nothing to stop the vehicle. On another occasion, about two weeks earlier, I had parked the car at walmart, pressed the brake and the ignition button to turn it off. While in park and the engine off, the vehicle lurched forward and bumped the SUV sitting in front of me. I am now afraid to drive this vehicle! I have reported this incident to my local auto dealership and chysler corp. The damage is being repaired at my cost.

Experienced unintended acceleration, at a stop or near stop when parking. Although my foot was on the break, the car lunged forward as if the accelerator had been pushed all the way down, hitting the back of a parked truck violently. Although the impact was great, the air bag did not deploy. The incident was observed by the homeowner/truck owner.

The contact owns a 2011 Jeep Grand Cherokee 4x4. While stopped at the light, the check engine light illuminated and the vehicle suddenly accelerated while the brake was depressed. There was an abnormal increase in rpms to 3,000. The contact placed the gear in park, turned the vehicle off and the engine returned to normal for a moment before continuing to accelerate abnormally. The vehicle was taken to the dealer who performed a diagnostic and located the failure at the throttle body. The dealer replaced the accelerator pedal and the throttle body but to no avail as the failure continued to recur. The manufacturer was contacted and they advised the contact to take the vehicle back to the dealer. The vehicle was not repaired. The failure mileage was 4,000 and the current mileage was 4,300.