2017 Toyota Corolla vehicle speed control problems

“Recently purchased a used 2017 Toyota Corolla. During the test drive I did not attempt to use the cruise control as it was only driven on city or small highways. Travel with the car at those locations has been good. Yesterday while on a freeway, I used the cruise control. It started out okay, but when I got to a downhill or uphill location, the car engine got very loud. The rpm’s revved to an extremely high level and the car accelerated and kept accelerating beyond the cruise set speed. I became very scared and didn’t know what was happening. Luckily I had quick thinking to hit the brakes immediately. I actually pulled over and stopped due to the issue and my nerves. The engine looked okay so once calmed, I began traveling again. I wanted to use the cruise on the freeway, so attempted a second time later. The same exact thing happened in the uphill / downhill scenario. I realized there is something wrong and it is not a good issue at all! This morning I began researching things related to the car. Prior to my purchase, I had checked for any outstanding recalls (which there were none) and problems people may have had with this car. There were no general…”

“The contact owns a 2017 Toyota Corolla. The contact stated that while driving at an undisclosed speed, the engine revved and the vehicle experienced unintended acceleration. The vehicle crashed into a concrete barrier while turning into a parking space. The contact was not able to depress the brake pedal in time to stop the vehicle. No air bags were deployed. No injury was sustained and no medical attention was received. A police report was filed. The vehicle was towed to a body shop; however, the vehicle was not diagnosed nor repaired. The vehicle was not deemed totaled by the insurance company. The manufacturer was not made aware of the failure. The failure mileage was approximately 55,000.”

“Vehicle went out of control in regards of speed when traveling downhill with cruise control on. Vehicle began heavily decelerating and accelerating along with high engine rpm. This is extremely dangerous and I am unable to use cruise control because of it.”

“I HAD TO DRIVE AROUND 600 MILES TO AND FROM FAMILY FUNERAL. AS OTHERS HAVE REPORTED THE CRUISE CONTROL ON A DOWN HILL SLOPE GOES OUT OF CONTROL. AS I REACHED THE TOP OF A HILL AND STARTED DOWN THE CRUISE CONTROL WOULD ACCELERATE TO 4000 RPM ( IT IS REALLY LOUD) THE SPEED WOULD START INCREASING AND GO 15-20 MPH OVER WHAT THE CRUISE CONTROL SPEED WAS SET AT. I HAD TO TURN OFF THE CRUISE CONTROL TO REGAIN CONTROL OVER THE SPEED. I WAS AFRAID THAT SOMETHING MIGHT HAPPEN IF I DID NOT. WHERE IT SEEMED MY CAR SHOULD DOWN SHIFT IT WAS NOT. SOMETHING IS WRONG WITH THE PROGRAMMING OF THE CRUISE CONTROL. THIS SHOULD NOT HAPPEN ON A DECLINE. ALSO, AT ONE POINT WHEN I WAS IN THE LEFT LANE AND A CAR PASSED ME ON THE RIGHT, MY CAR SLOWED DOWN REALLY QUICKLY. IF SOMEONE HAD BEEN BEHIND ME IT COULD HAVE CAUSED A SERIOUS ACCIDENT. THIS IS MY FOURTH TOYOTA AND I HAVE NEVER HAD THESE PROBLEMS BEFORE.”

“WHEN GOING DOWN HILL, THE CRUISE CONTROL RACES THE ENGINE INTO HIGH RPM (4000+ RPM) RATHER THAN SLOWING THE ENGINE AND CONTROLLING THE CAR SPEED. IT HAS DONE THIS SINCE IT WAS NEW.”

“WHEN CRUISE CONTROL ENGAGED, IF IT HITS A LEVEL OR DOWN HILL IT APPEARS TO DOWN SHIFT, BUT CONTINUE TO SPEED UP. IT SHOULD JUST REDUCE THE FUEL TO SLOW DOWN. THIS APPEARS TO BE A PROGRAM PROBLEM. THIS HAPPENS AT ALL SPEEDS. IT WAS BOUGHT USED FROM A TOYOTA DEALER. I HAVE NOT ASKED THE SERVICE DEPARTMENT YET.”