2010 Toyota Prius Speed Control & Cruise Problems

Heading westbound on I-70, taking Exit 29 off ramp from highway, I drove over uneven pavement. My traction control, ABS and brake lights illuminated, the brakes suddenly felt mushy. As I approached the stoplight at the end of the exit ramp, I questioned whether I would be able to stop. Scared me immensely. Luckily no cars were near me. I now do not have ABS, Traction Control, stability control OR regenerative braking.

My car accelerated significantly on its own while I was pulling into a parking stall in a private parking lot. It caused my vehicle to jump a curb and accelerate up a dirt divider and push over a bush that was planted in the dirt divider. Depressing my brakes did not Decelerate the car, so I pressed the Park button to eventually stop the vehicle. I’m not sure what speed it was traveling when it accelerated, but I could smell burning rubber at the end of the incident. I’m not sure when the smell first occurred.

The breaking lights, skid lights and another light associated with breaks came out and I lost the ABS abilities, the hv battery is not charging while breaking. These lights comes out randomly. Very risky especially while breaking.

The ABS, VSC/traction control, and brake system warning lights all came on at the same time in my 2010 Toyota Prius. I almost lost control of my car's braking ability. Afterwards, the hybrid system does not perform its regenerative braking/recharging any longer. And the cruise control mode doesn't work also. The DTC from the OBD2 port is C1391 - abnormal leak in the brake fluid accumulator. I found out that this issue is widespread among Gen 3 Priuses, but Toyota has not made this officially a recall campaign, but classifies it as a "customer support bulletin." But the issue is dangerous enough that it should be a recall item. I moved homes in fall of 2018, and Toyota says it mailed out a letter about this brake issue and resulting campaign, but I never received the letter. I was totally unaware that this was a safety issue, that Toyota acknowledged it, and that this safety issue with an ongoing "recall" campaign with an expiration date. Toyota denies that this is a recall issue, and will not provide this service. I would like for NHTSA to reopen and investigate this issue, and make Toyota issue a general recall campaign to resolve this dangerous safety problem with the car.

I was driving my 2010 Toyota Prius and my car started beeping when I was driving when I tried to slow down the car was not able to stop the breaking system ABS started displaying and my car started to beep and it won’t stop beeping. I did take my car to the dealer for a recalled inspection after my car broke down and I was no longer able to drive for my own safety. After I took the car to Downey Toyota for hybrid recall they didn’t tell me anything but on the document they gave me it did state that the ABS was a problem. Now my car is still not able to be used because of my own safety concerns since the vehicle won’t break when I put the brake pedal and a none stop beeping sound that won’t stop at all.

The digital speedometer display has stopped working. I can no longer see my speed or fuel gauge. I was quoted nearly $3,000 at the dealer to repair the vehicle.

MY CAR IS ACCELERATING WHILE BRAKING. WHENEVER I TRY TO BRAKE ON THE ROAD WHILE CURBING OR STOPPING AT THE TRAFFIC SIGNALS, THE CAR SKIPS/SLIDE FORWARD. IT'S GETTING WORSE ON THE RAINY TIME THOUGH.

DEFECT WITHIN THE BRAKE BOOSTER PUMP ASSEMBLY. IF THIS DEFECT OCCURS, VARIOUS WARNING LAMPS ON THE INSTRUMENT PANEL MADE ILLUMINATE, I EXPERIENCE INCREASED STOPPING DISTANCE, REDUCED HYDRAULIC PRESSURE WITHIN YOUR BRAKE SYSTEM, THE DEACTIVATION OF BRAKE ASSIST, AND/OR THE DEACTIVATION OF VEHICLE STABILITY CONTROL. TOYOTA HAS PREVIOUSLY ISSUED AT LEAST TWO SAFETY RECALLS ' D0H AND K0L ' DESIGNED TO PREVENT SIMILAR DANGEROUS OCCURRENCES. HOWEVER, HUNDREDS OF THOUSANDS OF GENERATION III PRIUS VEHICLES (2010-2015 MODEL YEARS) WERE EXCLUDED FROM THOSE SAFETY RECALLS.

AS I WAS DRIVING ON A ROAD, ABOUT 25 MPH, WHILE MY FOOT WAS ON THE ACCELERATOR PEDAL THE CAR JUST DECREASED IT'S SPEED TO A STOP AS I CONTINUALLY PUSHED MY FOOT ON THE PEDAL.

ON TWO OCCASIONS, JUNE 22, 2018 AND AUGUST 15, 2018 THIS VEHICLE SUDDENLY ACCELERATED WHILE USING CRUISE CONTROL AND TRAVELING AT SPEED ON GENERALLY FLAT, STRAIGHT, 4 LANE ROAD IN GOOD WEATHER. I HAVE ATTACHED DOCUMENTS WITH SUMMARIES OF EACH EVENT AND MAPS SHOWING ROUTE AND TERRAIN DURING THE EVENTS. HARD BRAKING SLOWED BUT DID NOT STOP THE VEHICLE EITHER TIME. BOTH TIMES, AFTER TRAVELING SOME DISTANCE WHILE BRAKING BUT CONTINUING TO ACCELERATE WITHOUT MY FOOT ON THE ACCELERATOR, THE VEHICLE MADE A THUNKING NOISE FELT THROUGH THE FLOOR OF THE CAR AND SUDDENLY STOPPED ACCELERATING. IN THE FIRST INCIDENT THIS WAS AFTER ABOUT 2 MILES, THE SECOND TIME AFTER ABOUT A MILE. AFTER EACH INCIDENT I PHONED THE LOCAL DEALERSHIP AND WAS TOLD THAT IF THEY COULD REPLICATE THE EVENT THEY MIGHT BE ABLE TO FIGURE IT OUT. I REPORTED THE EVENTS TO CORPORATE TOYOTA AND AN INVESTIGATION WAS OPENED. THE VEHICLE WAS TAKEN TO FRED ANDERSON TOYOTA OF ASHEVILLE WHERE THEY SPENT SEVERAL DAYS WITH THE CAR, INTERACTING WITH TOYOTA, WHO WAS ASKING THEM TO EXPLORE AND TEST VARIOUS THINGS RELATED TO THE DUAL PEDAL FAIL SAFE, THE COMPUTER, SNAPSHOTS OF EVENTS ON THE COMPUTER ETC. THEIR FINAL JUDGEMENT WAS THAT FLOOR MATS MAY HAVE INTERFERED, THOUGH IT WAS THE FIRST THING I CHECKED WHEN I REGAINED CONTROL OF THE CAR.

BRAKE ACTUATOR HAS FAILED. TRACTION CONTROL, ABS, BRAKE LIGHTS ILLUMINATED ON DASH. MORE EFFORT NEEDED TO ENGAGE BRAKES. THIS AFFECTS THE REGENERATIVE BRAKING AS IT NO LONGER CHARGES ON BRAKING AS IT WAS DESIGNED. CHECKED TOYOTA WEBSITE FOR RECALLS SINCE THIS IS SAFETY RELATED, AND THERE ARE NONE. WHICH IS QUITE DISTURBING. I'VE RESEARCHED PRIUS FORUMS AND THIS SEEMS TO BE AN ONGOING PROBLEM. TOYOTA ISSUED A RECALL FOR THE GENERATION 2 MODEL, HOWEVER THIS SEEMS TO BE A PROBLEM FOR GENERATION 3 MODELS AS WELL. THE PROBLEM DID OCCUR WHEN ON THE HIGHWAY TRAVELING AT 60 MPH.

I CHANGE THE BRAKE BOOSTER TWICE AND HACE THE SAME PROBLEM. MY BRAKE PEDAL LOSS OF BRAKING ABILITY OR SLIPPING BRAKES AND THE WARNING BRAKE, ABS AND TRACTION LIGHT PERMANENTLY ON, AND NO CRUISE CONTROL WORKS AT ALL

IN THE PAST YEAR I HAVE HAD 2 OCCURRENCES OF UNINTENDED ACCELERATION. THE FIRST IN FEBRUARY OF 2016. I WAS EXITING A PARKING RAMP UP HILL AND STEPPING ON THE ACCELERATOR. I WAS DRIVING STRAIGHT THEN TURNING TO THE LEFT (90 DEGREE TURN). WHEN I TOOK MY FOOT OFF THE ACCELERATOR, THE CAR CONTINUED TO ACCELERATE AND I WAS UNABLE TO GET IT SLOWED/STOPPED FOR ABOUT A BLOCK EVEN THOUGH I WAS APPLYING HEAVY BRAKE PRESSURE. THE CAR WAS REVVING AGAINST THE BRAKE PRESSURE. NO DAMAGE OR INJURIES OCCURRED. I TOOK THE CAR TO THE DEALERSHIP WHERE I PURCHASED IT (PURCHASE DATE 8/3/13). THEY CHECKED THE CAR OVER AND FOUND NO APPARENT CAUSE FOR THE ACCELERATION. I TOOK THE CAR HOME, AND IT DROVE NORMALLY UNTIL 11/26/16. ON THAT DATE I WAS DRIVING VERY SLOWLY IN A FLAT PARKING LOT, AND THE CAR BEGAN ACCELERATING WITHOUT MY PUSHING THE GAS PEDAL. I WAS DRIVING STRAIGHT AND THEN TURNING TO THE RIGHT (90 DEGREE. I GOT THE CAR STOPPED IN A FEW FEET BY PRESSING EXTREMELY HARD ON THE BRAKE. MY CAR DID NOT HIT ANYTHING. TECHNICIANS FROM THE DEALERSHIP HAVE NOT BEEN ABLE TO FIND A CAUSE AND I HAVE NOT BEEN ABLE TO GET PAST TOYOTA'S CUSTOMER SERVICE DEPARTMENT TO ESCALATE THE ISSUE FOR MORE DETAILED DIAGNOSTICS. I HAVE ATTACHED THE TIMELINE OF TRYING TO GET THE CAR DIAGNOSED AND THE ISSUE ESCALATED AS WELL AS WHY I DON'T THINK USER ERROR IS A FACTOR. *TR

I WAS IN A PARKING STRUCTURE GOING APPROXIMATELY 15 MPH WHEN I REMOVED MY FOOT FROM THE ACCELERATOR TO PRESS THE BRAKE. BEFORE I COULD GET MY FOOT TO THE BRAKE, THE CAR QUICKLY ACCELERATED. IT TOOK AT LEAST TWO ATTEMPTS AT PUSHING THE BRAKE PEDDLE BEFORE THE CAR CAME TO A STOP. AND, TO BE HONEST, THE GUARDRAIL THE CAR HIT HELPED ACTUALLY STOP THE VEHICLE. IT WAS TOTALLY UNEXPECTED AND EXTREMELY SCARY. IN HINDSIGHT, I SHOULD HAVE SUSPECTED THAT THERE MAY BE A PROBLEM WHEN I NOTICED THAT SOMETIMES WHEN APPLYING THE BRAKES TO COME TO A STOP THERE WOULD BE A FEELING OF THE BRAKES SLIPPING AND THE CAR LURCHING FORWARD A BIT. THE DEALERSHIP HAD THE CAR TOWED IN TO GET CHECKED OUT, AND I HAVE BEEN TOLD THAT THEY WILL NOTIFY TOYOTA. IN THE MEANTIME I AM CONCERNED ABOUT THE SAFETY OF THIS CAR!

BRAKE BOOSTER PUMP ASSEMBLY VEHICLE IN MOTION WHEN ON HIGHWAY WHEN LOSS OF BREAKING AND STEERING TOOK PLACE. VEHICLE LIGHTED ICONS APPEARED ON DASH ALONG WITH ALARM SOUND. (ABS) (!) (BRAKE) (SS). THIS UNSAFE CONDITION COULD HAVE BEEN AVOIDED IF NHTSA WOULD HAVE FORCED TOYOTA TO RECALL THIS DEFECTIVE PART IN 2013 WHEN TOYOTA NOTIFIED NHTSA OF THE DEFECTIVE BRAKING SYSTEM. OR TOYOTA MAILED NOTICE TO CUSTOMERS AS STATED BACK IN 2013, WHICH PREVENTION COULD PREVENT LOSS OF LIFE OR HARM. OR CLASS ACTION. HTTP://WWW-ODI.NHTSA.DOT.GOV/ACMS/CS/JAXRS/DOWNLOAD/DOC/UCM442011/RCMN-13V235-0909.PDF

MY PRIUS SUDDENLY ACCELERATED TODAY. MY WIFE WAS NOT IN AN ACCIDENT. MY VIN IS [XXX]. I SPOKE WITH MY WIFE AND THE INCIDENT OCCURRED UP A HILL WHEN SHE WAS PARKING (DECELERATING), SHE DIDN'T NOTICE THAT THE FLOOR MAT WAS NOT STUCK AT THE TIME AND THERE WAS NO WARNING OF A PROBLEM. ALSO, THIS HAS NOT HAPPENED BEFORE. VEHICLE WAS GOING UP A HILL ON A CITY STREET, NO ICE, GOING STRAIT, NO DAMAGE TO THE CAR, UNKNOWN TO WHAT FAILED. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).? *TR

TL* THE CONTACT OWNED A 2010 TOYOTA PRIUS. WHILE PARKING THE VEHICLE, IT UNEXPECTEDLY ACCELERATED AND STRUCK ANOTHER VEHICLE BEFORE CRASHING INTO AN APARTMENT UNIT. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE AIR BAGS DID NOT DEPLOY. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC, BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE MANUFACTURER WAS CALLED AND PROVIDED THE CONTACT WITH AN INVESTIGATOR WHO REMOVED A BOX FROM THE VEHICLE, WHICH WOULD DETERMINE IF THE FAILURE WAS DUE TO DRIVER ERROR OR A SAFETY DEFECT. THE MANUFACTURER DETERMINED THAT IT WAS DRIVER ERROR. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 53,000.

TL* THE CONTACT OWNS A 2010 TOYOTA PRIUS. WHILE DRIVING AT APPROXIMATELY 20 MPH AND SLOWING DOWN AT A STOP LIGHT, THE VEHICLE ACCELERATED WITHOUT WARNING. THE CONTACT STATED THAT THE BRAKE PEDAL WAS DEPRESSED TO THE FLOORBOARD WHILE THE RPMS INCREASED AND THE VEHICLE FAILED TO STOP. THE VEHICLE EVENTUALLY CAME TO A STOP. THE VEHICLE WAS TAKEN TO THE DEALER BUT THE FAILURE WAS UNABLE TO BE DETERMINED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT MENTIONED THAT THE FAILURE WAS EXPERIENCED IN MAY OF 2010 AND THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 53,000.

TODAY FEB 12, 2015 AT APPROXIMATELY 11:40 AM A WHITE SPORTS CAR LICENSE PLATE [XXX] WAS DANGEROUSLY WEAVING IN AND OUT OF CARS AND COULD HAVE CAUSED A CRASH. LOCATION WAS ON REDMOND WAY 202 GOING TOWARDS THE 520 HIGHWAY GOING TOWARDS SEATTLE. THIS PERSON IS A RECKLESS DRIVER, PLEASE KEEP AN EYE OUT FOR THIS CAR. THANK YOU. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

I WAS GOING UP THE ON RAMP TO I -75 EXIT 341 IN FLORIDA WHEN I LOST ALL POWER STEERING AND BRAKING AND THE CHECK HYBRID SYSTEM LIGHT CAME ON. CARS WERE COMING AT ME AT 70 MPH AND COULD HAVE KILLED MY WIFE AND I. THIS IS THE SECOND TIME I HAVE REPORTED THE PROBLEM OF CHECK HYBRID SYSTEM LIGHT COMING ON AND LOSING ALL POWER. THIS SHOULD BE INVESTIGATED A SAP TO PREVENT SO EONE FROM BEING KILLED. *TR