2018 Toyota Corolla VEHICLE SPEED CONTROL

THE VEHICLE CRUISE CONTROL WORKS FINE ON A FLAT SURFACE, BUT WHEN IT ENCOUNTERS A DOWNGRADE IT ACCELERATES 10MPH OVER THE SET SPEED AND THE RPMS INCREASE TO 4000. THE VEHICLE THEN APPLIES THE BRAKES FORCIBLY TO SLOW TO THE SET SPEED. IT SEEMS TO DOWNSHIFT BUT DOESN'T LET OFF THROTTLE SO IT SPEEDS UP RATHER THAN ENGINE BRAKE.

TL* THE CONTACT OWNED A 2018 TOYOTA COROLLA. WHEN THE CONTACT PLACED HER VEHICLE INTO PARK, THE VEHICLE ACCELERATED WITHOUT WARNING AND THE TACHOMETER LEVEL INCREASED. THE CONTACT ATTEMPTED TO DEPRESS THE BRAKE PEDAL WITH FORCE USING BOTH FEET, BUT THE VEHICLE DID NOT RESPOND AND CRASHED INTO THE WALL OF A CONVENIENT STORE. THE AIR BAGS DID NOT DEPLOY. THERE WERE NO INJURIES. THE CAUSE OF THE FAILURE WAS NOT DETERMINED. A POLICE REPORT WAS FILED. THE VEHICLE WAS TOWED TO A COLLISION LOT WHERE IT WAS DEEMED A TOTAL LOSS. THE MANUFACTURER WAS CONTACTED AND PROVIDED CASE NUMBER: 1908261236. THE DEALER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS APPROXIMATELY 15,438.

TAMARA INFLATOR. THE CRUISE CONTROL IN MY 2018 TOYOTA COROLLA HAS BEEN MESSED UP EVER SINCE I BOUGHT MY CAR LAST YEAR.I TOLD THE DEALER SHIP ABOUT IT THEY CLAIMED THEY ADJUSTED IT BUT IT STILL INCREASES MY SPEED GOING DOWN HILL AND I'VE GOT A SPEEDING TICKET BECAUSE OF IT.MY DAUGHTER ALSO CALLED TOYOTA MAIN HEAD QUARTERS BUT THEY SAID IF I WANTED IT FIX I WOULD HAVE TO PAY OUT OF MY POCKET..I WILL SET MY CRUISE CONTROL AT 60 ON THE HWY IF I GO DOWN A SMALL. HILL MY RPM AND SPEED GO UP.

THEY ASKED ME TO COME TO TOYOTA OF DALLAS TO FILL OUT AN "UNINTENDED ACCELERATION" UA REPORT (SEE BELOW). THE TECHNICIAN BECAME VERY ANGRY ABOUT THIS ISSUE AND TOLD ME THAT THE MANUFACTURER CREATED THE CAR THIS WAY. UNDER ALMOST ANY CIRCUMSTANCE, (GOING AROUND A SHARP CURVE, HEAVY TRAFFIC, ANY DOWNHILL OR UPHILL, WEATHER CONDITIONS, OR FOG) WHEN USING THE CRUISE CONTROL THE CAR WILL TRY TO SLOW IT SELF DOWN FROM SET SPEED AT 65 MPH, BY DROPPING INTO A LOWER GEAR, RAMPING UP THE RPM'S TO 5000 FORCING THE VEHICLE TO ACCELERATE 10 TO 15 MILES OVER THE SET SPEED WHICH WAS SET AT 65 MPH. IN THIS CASE, THE BRAKES WILL NOT STOP THIS ACCELERATION WHILE THE VEHICLE IS AMPING UPWARD. THE ONLY WAY TO STOP THE UNINTENDED ACCELERATION IS TO TURN OFF THE CRUISE CONTROL. HIGHWAY DRIVING FROM CARROLLTON, TEXAS TO WACO, TEXAS ON A CLEAR DAY. MY COMPANY HAS A POLICY THAT COMPANY VEHICLES SHOULD NOT EXCEED 70 MPH. IT IS A FIREABLE OFFENCE.

WHEN USING THE RADAR CONTROLLED CRUISE CONTROL, THE ENGINE WILL SOMETIMES REV TO OVER 4000 RPM. A TOYOTA FIELD ENGINEER TOLD ME THAT THIS IS ENGINE BRAKING, BUT THIS OCCURS WHEN THE CAR IS ON A LEVEL STRETCH OF HIGHWAY AT THE SET SPEED AND NO OTHER UNUSUAL CIRCUMSTANCES. THIS EXACT SAME PROBLEM OCCURS WITH MY WIFE'S 2017 COROLLA. I'VE READ A NUMBER OF COMMENTS ON THE TOYOTA OWNERS WEBSITE (HTTPS://WWW.TOYOTA.COM/OWNERS/COMMUNITY/ASK-AN-OWNER/QUESTION-DETAILS/ID/62752030). SOME HAVE EVEN SAID THEIR CARS SPEED UP WHEN THIS PHENOMENON HAPPENS. THIS HAS HAPPENED CONSISTENTLY EVERY TIME I'VE USED THE CRUISE CONTROL SINCE I TOOK DELIVERY OF THE CAR ON 12/1/2017, AND IT HAPPENS MULTIPLE TIMES PER TRIP. THE DATE I ENTERED BELOW IN THIS FORM WAS ONLY THE LATEST OCCURRENCE.

THE CRUISE CONTROL SYSTEM IS DESIGNED SO THE ENGINE AND TRANSMISSION DOWN SHIFTS WHEN THE SYSTEM IS ENGAGED AND GOING DOWN HILLS. THIS PUTS MUCH MORE WEAR AND TEAR ON BOTH THE ENGINE AND TRANSMISSION. IN ADDITION TO THE DOWN SHIFT THE RPM GOES TO OVER 4000 IN AN ATTEMPT TO SLOW THE CAR. THIS IS COMPLETELY UNNECESSARY AND DRASTICALLY REDUCES GAS MILEAGE, WHICH IS EXACTLY OPPOSITE OF THE ORIGINAL INTENT OF THE CRUISE CONTROL WHICH WAS BETTER GAS MILEAGE AND PEACE OF MIND TO NOT SPEED. THE SPEED DOES GO UP 5 MILES PER HOUR WHEN THIS HAPPENS. BOTTOM LINE IS THE ENGINEERS AND THEIR BOSSES WHO APPROVED THIS SYSTEM ARE ALL IDIOTS AND SHOULD BE FIRED. YOU WOULD ASSUME YOU WOULD GET BETTER GAS MILEAGE WHEN GOING DOWN HILL WHEN THE ENGINE WOULD DISENGAGE BECAUSE YOU WOULD NEED LESS POWER AND NOT MORE TO MAINTAIN A CERTAIN SPEED. I WAS INFORMED BY THE DEALER THE CRUISE CONTROL IS DESIGNED TO OPERATE BY GEARING DOWN, I TOLD HIM NO MANUFACTURE IS THAT STUPID.HE THEN PROVED ME WRONG BY SHOWING ME THE MANUAL PROVING TOYOTA IS THAT STUPID.I WOULD HAVE NEVER PURCHASED THIS CAR HAD I KNOWN THIS FEATURE WAS DESIGNED IN THIS WAY. WHO KNOWS WHAT OTHER SYSTEMS IN THIS COROLLA ARE DESIGNED IN SUCH A STUPID MANNER. I WILL CERTAINLY NEVER BUY ANOTHER AUTO FROM THIS COMPANY.