2010 Toyota Prius complaints

BRAKES DID NOT WORK ON ICE. CAR WENT FORWARD ABOUT 15 FEET WITH NO BRAKE ACTION. *TR

WHEN I DRIVE ON SLIPPERY OR BUMPY ROADS IN MY 2010 PRIUS, I EXPERIENCE BRAKE FAILURES AT LOW SPEEDS. IT FEELS AS IF THERE IS A TEMPORARY SURGE OF POWER AND THE BRAKE SYSTEM DISENGAGES -- ALMOST AS IF THE ANTI-LOCK BRAKE SYSTEM IS IMPROPERLY ENGAGING. I HAVE EXPERIENCED THIS ABOUT FOUR TIMES, BOTH IN SLIPPERY WEATHER AND IN DRY WEATHER (FOR INSTANCE, DRIVING OVER A MANHOLE COVER). SO FAR THERE HAVE BEEN NO ACCIDENTS, BUT THIS SEEMS FORTUITOUS. I AM BRINGING THE CAR INTO THE DEALER. *TR

MY VEHICLE SURGED FORWARD OR TEMPORARILY LOST BRAKING AFTER DRIVING OVER A POTHOLE OR OTHER UNEVEN SURFACE, AND THIS IS A RECURRING PROBLEM. *TR

SPORADIC PROBLEMS WITH THE BRAKES ON OUR 2010 TOYOTA PRIUS. WE HAVE DISCUSSED THIS SEVERAL TIMES ON CHAT BOARDS OVER THE PAST FIVE MONTHS. IT HAPPENS PERHAPS ONCE A MONTH. THE BRAKES LOCK WHEN THE CAR IS IN REVERSE. BACKING OUT OF THE GARAGE, YOU CAN JUST BARELY TOUCH THE BRAKES AND IT'S AS THOUGH YOU HAD SLAMMED THE FULL FORCE OF YOUR FOOT ON THE BRAKES. LITERALLY CAN CAUSE WHIPLASH EVEN AT THE SLOW SPEED OF BACKING OUT. WHEN THIS PROBLEM OCCURS IT WILL OCCUR OVER AND OVER AS LONG AS YOU ARE IN REVERSE. EACH TIME WHEN YOU SLIGHTLY DEPRESS THE BRAKES, THE CAR SLAMS TO A COMPLETE STOP. WHAT WE HAVE FOUND IS THAT THE ONLY WAY TO CORRECT IT, HAS BEEN TO TURN OFF THE CAR COMPLETELY AND RE-START THE CAR. IT MAY JUST BE COINCIDENCE, BUT TYPICALLY THE BRAKES RETURN TO COMPLETELY NORMAL OPERATIONS IN REVERSE AFTER THE IGNITION HAS BEEN SHUT OFF AND THE VEHICLE ENGINE RESTARTED. THE GREATEST ODDITY IS THAT IT APPEARS THAT THE BRAKES DO NOT RESPOND IN THE SAME DEGREE AS THE BRAKES ARE DEPRESSED. IT'S AS THOUGH THE BRAKES WHEN DEPRESSED EVEN SLIGHTLY MESSAGE THE CAR TO EXERT FULL BRAKING ACTION. IT'S THE ONLY CAR WE'VE EVER OWNED WHERE THE BRAKING POWER SEEMS NOT TO BE DEPENDENT ON THE DEGREE WITH WHICH WE PRESS THE BRAKES. AGAIN, THIS DOESN'T HAPPEN EVERY TIME WE HAVE THE CAR IN REVERSE, BUT TYPICALLY BETWEEN ONCE A MONTH AND EVERY SIX WEEKS. *TR

2010 PRIUS - BRAKING EFFECTIVENESS IS LOST ON ROUGH SURFACES. THE CAR GIVES THE SENSATION OF LURCHING AHEAD. IN ADDITION, WE HAVE EXPERIENCED SURGING PROBLEMS WHEN USING THE CRUISE CONTROL. RATHER THAN ACCELERATIONS TO THE PRESET SPEED, THE ACCELERATION CONTINUES PAST THE SETTING UNTIL THE CRUISE CONTROL IS CANCELED BY TAPPING THE BRAKES. *TR

I PURCHASED MY 2010 TOYOTA PRIUS IN DECEMBER 2010. TWICE IN THE LAST TWO WEEKS MY CAR HAS UNEXPECTEDLY LURCHED FORWARD AS I WENT OVER A SPEED BUMP AT A RELATIVELY LOW SPEED. SINCE IT WAS THE SAME SPEED BUMP BOTH TIMES, I REASON THAT IT MUST HAVE SOMETHING TO DO WITH THE HEIGHT OF THE BUMP AND/OR MY ANGLE OF APPROACH. I WAS ABLE TO REGAIN CONTROL OF THE VEHICLE BOTH TIMES. I AM REPORTING THIS BECAUSE I HAVE READ THE NEWS ARTICLES ABOUT OTHERS HAVING SIMILAR PROBLEMS WITH 2010 PRIUS' AND THOUGHT THAT YOU WOULD WANT TO KNOW. I HAVE NOT TAKEN ANY ACTION BECAUSE I WASN'T SURE THE PROBLEM WAS WITH THE VEHICLE OR THE ROAD SURFACE. *TR

I BOUGHT A 2010 PRIUS ON 7/25/09 AND SHORTLY THEREAFTER NOTICED SOMETHING A BIT UNUSUAL WITH MY BRAKES AT SPORADIC TIMES. I JUST NOW READ THE DESCRIPTION SOMEONE GAVE IN AN ARTICLE ABOUT TROUBLE WITH 2010 PRIUS BRAKES AND IT FITS MY EXPERIENCE TO A T: "WHEN BRAKING, IF A POTHOLE OR BUMP IN THE ROAD IS HIT, THE CAR SEEMINGLY JERKS FORWARD/ACCELERATES FOR A SPLIT SECOND." IN ADDITION, ON SPORADIC OCCASIONS WHEN BACKING UP THE BRAKES WILL GRAB SHARPLY WHEN RELATIVELY LIGHT PRESSURE IS APPLIED. AS FOR A DATE BELOW I HAVE LISTED TODAY'S DATE AS IT OCCURRED TODAY, BUT HAS DONE SO INTERMITTENTLY SINCE I HAVE OWNED THE CAR. *TR

THE BRAKES MOMENTARILY RELEASE/SKIP WHEN BRINGING THE VEHICLE TO A STOP WHILE PASSING OVER A BUMP OR POTHOLE IN THE ROAD. THIS HAS BEEN HAPPENING ON A REGULAR BASIS SINCE I BOUGHT THE CAR IN JULY 2009. *TR

I OWN A 2010 TOYOTA PRIUS. DURING THE FIVE MONTHS I'VE HAD IT, I HAD 3 TO 4 ENCOUNTERS WITH BRAKE PROBLEM. TWICE I WAS DRIVING AROUND 20MPH AND WAS BRAKING AND PREPARING TO MAKE A TURN, BUT THE BRAKE FAILED TO WORK, AND I FELT THAT THE CAR WAS ACCELERATING OUT OF CONTROL. THIS LASTED FOR ONLY ABOUT A SECOND, AND I EVENTUALLY WAS ABLE TO SLOW THE CAR DOWN AND MAKE THE TURN. IN ONE CASE THE ROAD WAS VERY BUMPY, IN THE OTHER CASE THE CAR HIT A POTHOLE RIGHT AROUND THE TIME I BRAKED. ON A THIRD INCIDENCE, THE BRAKE DIDN'T WORK FOR A SECOND ON A SLIGHTLY ICY, SLIPPERY HIGHWAY, WHEN I WAS GOING AT AROUND 30MPH. THIS MAY SUGGEST THAT THE BRAKE FUNCTION POORLY ON SLIPPERY ROAD, ALTHOUGH I HAVEN'T HAD ANOTHER CHANCE TO EXPERIENCE THIS AGAIN. *TR

SINCE PURCHASING MY 2010 PRIUS IN AUGUST, I HAVE EXPERIENCED MULTIPLE EPISODES OF CAR FEELING AS IF IT WERE SUDDENLY ACCELERATING WHEN GOING OVER BUMPS, POTHOLES OR OTHER IRREGULARITIES IN THE ROAD. I BELIEVE WHEN THIS HAPPENS I OFTEN ALREADY HAVE MY FOOT ON THE BRAKE, BUT I FIND MYSELF HAVING TO SLAM THE BRAKE ON HARDER TO PREVENT WHAT IS AT LEAST A STRONG SENSATION OF THE CAR "TAKING OFF". FEELS JUST LIKE WHEN RIDING A HORSE AND IT IS ABOUT TO BOLT! WENT TO DEALER IN SEPTEMBER OR OCTOBER, AND THEY COMPLETELY BLEW ME OFF, SAID "NOTHING IS WRONG", NO OTHER REPORTS OF THIS HAPPENING (CLEARLY A LIE IT NOW APPEARS). *TR

2010 PRIUS BRAKES DO NOT WORK PROPERLY WHEN HITTING A SLICK MANHOLE COVER - CAR ACTUALLY LUNGES FORWARD. SEEMS TO BE A SOFTWARE GLITCH WHEN REGENERATIVE BRAKING IS TAKING PLACE AND ONE OR MORE WHEELS CAN SLIP ON THE ROAD SURFACE. *TR

I OWN A NEW 2010 TOYOTA PRIUS. I HAVE ALWAYS SUSPECTED THE BRAKE HAS PROBLEM. IT HAPPENED SEVERAL TIMES THAT THE VEHICLE WILL SURGE FORWARD ON SLIPPERY, UNEVEN SURFACE OR POT HOLES WHEN I HIT THE BRAKE. *TR

WAS PARKING ON SLIGHT INCLINE FACING DOWNHILL. HIT BRAKE TO PUT CAR IN PARK, BUT CAR LURCHED FORWARD, OVER CONCRETE BUMPER IN FRONT OF PARKING SPACE. JUST HAPPENED, HAVE NOT TAKEN CORRECTIVE MEASURES YET. ALSO HAVE NOTICED CAR LURCHING FORWARD WHEN SLOWING AROUND TURNS, HAS NOT CAUSED SIGNIFICANT PROBLEMS YET, NO ACTION TAKEN YET. *TR

WE OWN A 2010 PRIUS. MY DAUGHTER USUALLY DRIVES IT. I HAD IT FOR THE MONTH OF JANUARY. DURING THAT TIME, I EXPERIENCED BRIEF SURGES OR SWERVES WHEN I HIT POTHOLES OR ROUGH SPOTS IN THE ROAD AT A SLOW SPEED. THIS OCCURRED 3 OR 4 TIMES OUT OF APPROXIMATELY TWO DOZEN SHORT TRIPS AROUND TOWN. *TR

WHILE DRIVING OUR 2010 TOYOTA PRIUS, WE HAVE NOTICED FREQUENT OCCURRENCES OF THE CAR LURCHING WHILE BRAKING. THIS TYPICALLY HAPPENS AS THE CAR HITS A POTHOLE OR BUMP IN THE ROAD WHILE DEPRESSING THE BRAKE; THE CAR LURCHES WITH ENOUGH FORCE TO SOMETIMES PUSH OUR BODIES FORWARD, AGAINST THE SAFETY RESTRAINTS. NOTHING HAS BEEN DONE TO CORRECT THE FAILURE, BUT WE WILL BE CALLING OUR DEALERSHIP TO DISCUSS SOLUTIONS. *TR

BRAKING PROBLEM ON 2010 TOYOTA PRIUS. VEHICLE SURGES WHILE APPLYING THE BRAKES ON A BUMPY ROAD. I HAVE EXPERIENCED THIS ON SEVERAL OCCASIONS SINCE PURCHASING THE VEHICLE NEW THIS YEAR. THE VEHICLE HAS NOT BEEN TAKEN BACK TO THE DEALERSHIP AT THIS POINT IN TIME. *TR

AS I WAS APPROACHING A STOP LIGHT, I TOOK MY FOOT OFF OF THE GAS PEDAL OF MY 2010 TOYOTA PRIUS TO HIT THE BRAKE WHEN ALL OF THE SUDDEN MY VEHICLE ACCELERATED AND SURGED FORWARD. IT DID NOT STOP UNTIL I SLAMMED MY FOOT ON THE BRAKE. THIS HAS NOT HAPPENED SINCE AND I HAD ASSUMED IT WAS A FREAK ACCIDENT, BUT I WANTED TO REPORT IT IN LIGHT OF THE TOYOTA RECALLS THAT HAVE OCCURRED. *TR

2010 TOYOTA PRIUS BRAKES BRIEFLY FAIL DURING LOW SPEED BREAKING. CAR FEELS LIKE IT SURGED FORWARD EVEN WHEN FOOT WAS ON THE BRAKE PEDAL. *TR

THERE HAVE BEEN SEVERAL INSTANCES SINCE I PURCHASED MY 2010 PRIUS IN OCTOBER 2009 THAT I HAVE GONE OVER A BUMP IN THE ROAD AND MY 2010 PRIUS HAS FELT LIKE IT'S SPEEDING UP AND I HAD TO PUSH HARD ON THE BRAKES TO FEEL LIKE I HAD CONTROL OF MY CAR. *TR

2010 THIRD GENERATION TOYOTA PRIUS. MY WIFE AND I ARE EXPERIENCING UNPREDICTABLE MOMENTARY BRAKE FAILURE AND SENSE OF LOSS OF CONTROL OF THIS VEHICLE. THIS OCCURS UNPREDICTABLY UNDER VARIOUS CONDITIONS SUCH AS UNEVEN PAVEMENT, POT HOLES OR PATCHES OF SLIPPERY ROAD SURFACE. THE LOSS OF BRAKING FORCE IS BRIEF, BUT THE RESULTING REENGAGEMENT OF THE BRAKES CAN BE HARSH AND STARTLING AND HAS CREATED MOMENTS OF ERRATIC AND DANGEROUS CONTROL LAPSE. THIS PATTERN OF BRAKE FAILURE HAS OCCURRED BY MY GUESS GREATER THAN 20 TIMES SINCE OUR PURCHASE OF THE VEHICLE APPROX 4 MONTHS AGO AND OVER THE COURSE OF 10,000 MILES SO FAR DRIVEN. OVER ALL WE ARE VERY PLEASED WITH THIS VEHICLE, BUT ARE CONCERNED THAT THIS BRAKING UNPREDICTABILITY AND ABRUPT REENGAGEMENT WILL EVENTUALLY BE THE CAUSE OF AN ACCIDENT. *TR

BRAKE FAILURE. *TR

WHEN BRAKING AT LOW SPEEDS, VEHICLE ACCELERATES FOR A SECOND BEFORE BRAKING. THIS OCCURS WHEN HITTING A BUMP. I EXPERIENCE THIS ALMOST EVERY DAY ON MY WAY TO WORK AT THE SAME LOCATION. THE ROAD IS SLOPED SLIGHTLY DOWNHILL IN A RESIDENTIAL STREET. I HAVE NOT CONTACTED TOYOTA YET. *TR

2010 TOYOTA PRIUS BOUGHT ON SEPT 28, 2009. I HAVE EXPERIENCED THE FOLLOWING THRICE "WHEN BRAKING, IF A POTHOLE IS HIT, THE CAR SEEMINGLY JERKS FORWARD/ACCELERATES ." THE FIRST TIME I THOUGHT I WAS IMAGINING IT, BUT WHEN IT HAPPENED ON A COUPLE OF OCCASIONS AFTER THAT I REALIZED IT IS REAL. I AM EXTRA CAUTIOUS WHILE DRIVING THIS CAR COMPARED TO MY FAMILY'S OTHER CARS. IN NORMAL COURSE OF OPERATION THE BRAKES ARE WORKING FINE. *TR

WHILE BRAKING AND TURNING AND GOING OVER A SMALL BUMP MY PRIUS SEEMS TO LOSE ITS BRAKES AND ACCELERATE FOR A SPLIT SECOND . IT HAS HAPPENED ABOUT 4 TIME IN THE LAST 6 MONTHS. *TR

I PURCHASED A 2010 TOYOTA PRIUS ON 8/26/09. THE CAR WOULD ACCELERATE WHEN I STEPPED ON THE BRAKE TO SLOW THE CAR DOWN AT A STOP SIGN OR RED LIGHT. I BROUGHT THE CAR TO PLAZA TOYOTA ON 12/23/09 AFTER THIS OCCURRED MORE THAN 50 TIMES. TOYOTA TOLD ME THAT THERE WAS NOTHING WRONG WITH MY CAR AND I'M THE 1ST ONE TO COMPLAIN ABOUT THIS PROBLEM. ON THE RECEIPT (R/O # 6311675/1) FROM THIS VISIT, TOYOTA STATED," TOM THE TOYOTA FIELD TECH DETERMINED THAT THE FEELING THAT THE CUSTOMER IS EXPERIENCING IS NORMAL AND THAT THE REGENETIVE BRAKING SYSTEM AND HYDRAULIC SYSTEM IS TRANSFERRING AND THAT'S NORMAL." SINCE THAT VISIT, THIS PROBLEM HAS ONLY HAPPENED 4 TIMES. IN REGARDS TO BRAKING ON SLIPPERY ROADS, THE CAR HAS SLID 2 DIFFERENT TIMES BEFORE GRIPPING THE ROAD. ALSO, TOYOTA CLAIMS THAT THE PRIUS GETS 51 MPG, THIS CAR HAS ONLY BEEN AVERAGING 33 MPG IN CITY DRIVING. *TR

BRAKING MODERATELY, GOING OVER BUCKLED ASPHALT AND OR TAR STRIPS IN THE PAVEMENT. I HAVE HAD IT HAPPEN AT LEAST THREE TIMES, PRIUS FEELS OUT OF CONTROL THEN I REGAIN CONTROL, WET OR DRY PAVEMENT. ITS A BRAND 2010 TOYOTA PRIUS WITH 5,000 MILES. *TR

WE OWN A 2010 TOYOTA PRIUS AND NOTICED THAT THE CAR "KICKS" A LITTLE WHEN APPLYING THE BRAKES LIGHTLY. WE DIDN'T THINK MUCH OF IT AT FIRST BECAUSE WE LIVE IN CHICAGO AND THE STREETS ARE QUITE WEATHERED. WE THOUGHT THE "KICKS" WE FELT MIGHT BE THE CAR BUMPING ALONG UNEVEN ROADS. THANKFULLY, WE HAVE NOT BEEN INVOLVED IN ANY ACCIDENTS. OTHER THAN THIS ISSUE, WE ARE PLEASED WITH THE CAR. *TR

2010 TOYOTA PRIUS. GOING DOWNHILL AND APPROACHING A STOP SIGN. MY FOOT IS STEADY ON THE BRAKE AND I AM GRADUALLY COMING TO A STOP. THEN, I INADVERTENTLY GO OVER A BUMP IN THE ROAD AND THE PRIUS LUNGES FORWARD. I HAD TO IMMEDIATELY SLAM HARD ON THE BRAKES IN ORDER TO KEEP THE CAR FROM GOING INTO THE INTERSECTION. FORTUNATELY, THERE WAS NO CAR OR PERSON IN FRONT OF ME AS I WAS STOPPING. (I LOOKED AT PRIOR COMPLAINTS AND THIS MATCHES MINE). *TR

1. I HAD A 2009 TOYOTA COROLLA AND JUST TRADED IT IN AND BOUGHT A 2010 TOYOTA PRIUS THIS SATURDAY 1/30/10. ON MONDAY I WAS DRIVING TO WORK AND WAS STILL IN MY COMMUNITY WHEN I APPROACHED AN INTERSECTION AND APPLIED MY BRAKE. THE CAR SKIDDED THROUGH THE INTERSECTION. THANKFULLY THERE WAS NO OTHER VEHICLES. I READ THE ARTICLE TODAY ABOUT THE INCIDENT WITH THE PRIUS BRAKES AND WANTED TO SUBMIT MY INCIDENT. 2. IT WAS THE FIRST TIME THIS OCCURRED. 3. ALSO I CONTACTED TOYOTA SERVICE AND ONE OF THE SERVICE REP TOLD ME THAT THEY CAN TAKE A LOOK AT IT BUT CANT DO ANYTHING UNTIL TOYOTA ISSUES A FIX... WHAT DO I DO WITH MY CAR? DOES LEMON LAW APPLY? WHAT ARE MY OPTIONS? *TR

2010 PRIUS SEEMS TO LURCH FORWARD WHEN DRIVING OVER POTHOLES AND OTHER BUMPS WHILE BRAKING. THIS HAS HAPPENED NEAR INTERSECTIONS AND WHEN TURNING INTO PARKING LOTS. THE CAR SEEMS TO SPEED UP BRIEFLY, ENOUGH TO SCARE THE DRIVER. I'VE ALMOST ROLLED THROUGH STOP SIGNS AND NEARLY RUN OVER A FEW CARS WHEN TURNING INTO PARKING LOTS. *TR

WHILE COMING TO A STOP, MY VEHICLE (2010 TOYOTA PRIUS, MODEL IV) LOST BRAKING POWER (FELT LIKE AN ACCELERATION WHILE DEPRESSING THE BRAKE PEDAL) AS I WENT OVER A POT HOLE IN THE ROAD. I WAS AT A VERY LOW SPEED (~5MPH). I DEPRESSED THE BRAKE PEDAL EVEN FURTHER AND THE BRAKING POWER RETURNED AND I WAS ABLE TO STOP. *TR

2010 TOYOTA PRIUS SPONTANEOUS ACCELERATION WHILE BRAKING OVER BUMPS, POT HOLES AND SLICK ROADWAYS. *TR

PRIUS 2010 PURCHASED 12/26/2009. WHEN I'M BRAKING DOWNHILL AND HIT A POT-HOLE, I GET A BIG KICK FROM THE CAR. IT FEELS LIKE THE ABS SYSTEM ENGAGES. IT'S HAPPENED A FEW TIMES, AND IS PREDICTABLE IN CERTAIN ROUTES. OVER TIME, I'VE ADJUSTED TO IT AND LEARNED TO APPLY THE BRAKES DIFFERENTLY. I'M ALSO MORE CAREFUL TO AVOID THE POTHOLES. IT'S NOT HAPPENING AS OFTEN NOW. IT'S STARTLING, BUT I'M NOT SURE IT'S DANGEROUS. *TR

I HAVE BEEN DRIVING MY 2010 PRIUS FOR 6 MONTHS AND HAVE EXPERIENCED THE FOLLOWING NEARLY 10 TIMES: WHEN BRAKING, IF A POTHOLE OR BUMP IN THE ROAD IS HIT, THE CAR SEEMINGLY JERKS FORWARD/ACCELERATES FOR A SPLIT SECOND. THIS RESULTS IN LESS CONTROL OVER WHERE THE CAR COMES TO A COMPLETE STOP. THE MOST UNNERVING INSTANCES OF THIS OCCUR WHEN APPROACHING THE END OF A ROAD OR A CROSSWALK. I NEARLY HIT A CHILD BECAUSE OF THIS UNPREDICTABLE REACTION TO A POTHOLE. ALSO, THE BRAKES ARE LESS EFFECTIVE IN SNOW THAN ANY OTHER CAR I'VE EVER DRIVEN. NO MATTER HOW SLOW I'M GOING OR HOW HARD I HIT THE BRAKES, I'VE FOUND THAT I'M GUARANTEED TO SKID SEVERAL FEET, OFTENTIMES INTO INTERSECTIONS/TRAFFIC. PERHAPS UNRELATED TO THE POTHOLE ISSUE, BUT MAYBE NOT. BOTH ISSUES ARE EXTREMELY DANGEROUS. *TR

2010 TOYOTA PRIUS HAS A DEFECT THE TOYOTA HAS ACKNOWLEDGED. THE PROBLEM IS WHEN THE CAR HITS A LARGE BUMP THE CAR ACCELERATES. THE DASH TRACTION WARNING LIGHT ALSO COMES ON AND TOYOTA IS SAYING THEY BELIEVE THIS IS A SOFTWARE PROBLEM. *TR

WHEN BACKING UP THE 2010 PRIUS, THE BRAKES GRAB. I RELEASE THE BRAKE PEDAL AND REAPPLY AND EACH TIME THE BRAKES GRAB. *TR

I HAD MY NEW TOYOTA PRIUS ABOUT 4 DAYS. ON SATURDAY MORNING, 1/23/10, I WAS BACKING OUT OF MY DRIVEWAY. THERE WAS ICE, BUT WHEN I GENTLY PUT ON MY BRAKES, I FELT NOTHING. TWO SECONDS LATER AFTER SLIDING TO THE END OF MY DRIVEWAY, THE BRAKES CAUGHT. I WAS CONCERNED THAT THE FEELING WAS QUITE ODD, BUT CHALKED IT UP TO THE ICE. THEN THE NEXT MORNING, IT HAPPENED AGAIN WHEN THERE WAS NO ICE, BUT WET ROADS, FIRST COMING TO ONE STOP LIGHT AND THEN ABOUT 15 MINUTES LATER AT ANOTHER STOP LIGHT. THE SAME FEELING--PUTTING ON THE BRAKES AND HITTING AIR--THEN 2 SECONDS LATER THE BRAKES GRABBED. I IMMEDIATELY DROVE IT TO THE DEALERSHIP AND LEFT IT, CITING BRAKE FAILURE. THEY HAD IT ABOUT 2 DAYS AND NO ONE BELIEVED ME. SAID IT WAS FINE. YESTERDAY, 2/1/10, AND AGAIN TODAY, 2/2/10, IT DID IT AGAIN TO AND FROM WORK. I DO NOT FEEL SAFE IN THAT CAR. SOMETHING IS WRONG WITH THE BRAKES. *TR

WHEN THE CAR IS MODERATELY BRAKING (SO CALLED REGENERATIVE BRAKING) AND EITHER (OR BOTH) OF THE REAR WHEELS HITS ROUGH PAVEMENT (POT HOLES, METAL PLATES COVERING ROAD, ROUGH RAIL-ROAD CROSSINGS) THE CAR CEASES TO BREAK AND THE CAR ACTUALLY ACCELERATES (THE ACTUAL TIME IS ABOUT 1 SECOND OF NO BREAKS AND ACCELERATION). I HAVE HAD THIS HAPPEN 10 TIMES SINCE I BOUGHT THE CAR IN OCT OF 09. IN THE FIRST MONTH THE DEALER TOLD ME THEY HAD NOT HEARD OF THIS. TWO MONTHS AGO (DEC)A MECHANIC TOLD ME THAT THE ELECTRIC ENGINE KICKS IN (WHEN REGENATIVE BREAKING) WHICH DRIVES THE FRONT WHEELS FOR A SMOOTHER BREAKING, SO HE SURMISED THAT IF THE BREAKING WHEELS ARE NOT MAKING CONTACT THE CAR WOULD SPEED UP. ON 1/13/2010 I MET WITH THE HEAD OF SERVICE FOR THE DEALERSHIP. HE TOLD ME THAT THE DEALERSHIP TESTED A PRIUS HOOKING IT UP TO A COMPUTER AND REPRODUCED THE ENVIRONMENT OF THIS COMPLAINT. ALTHOUGH HE ADMITTED THERE WAS A MOMENTARY LACK OF BREAKING WITH THE LOSS OF BACK WHEEL CONTACT WITH THE PAVEMENT HE CLAIMED THERE WAS NO ACCELERATION NOTED. HE ALSO ADMITTED THE TEST WAS DONE AT APPROX. 25MPH. I SUGGESTED HE SHOULD REPEAT THE TEST AT 40-50MPH AS THIS IS WHERE IT IS MOST NOTABLE. TOYOTA'S ONLY SUGGESTION IS TO DRIVE CAREFULLY. THEY KNOW THEY HAVE A PROBLEM BUT THIS IS THERE SOLUTION. I HAVE BEEN CAREFUL BUT ON 1/31/10 I WAS DRIVING AT 45MPH BEGINNING TO DECELERATE AS THE LIGHT AHEAD HAD TURNED RED, AND THE TRUCK INFRONT OF ME HAD TO PANIC STOP AS A CAR CUT INFRONT OF HIM, AT THAT MOMENT MY

I HAVE A 2010 PRIUS. WHEN I AM BRAKING AND HIT SOME BUMPS IN THE ROAD, MY CAR LURCHES FORWARD WITH BRIEF SPURTS OF ACCELERATION. THIS HAS NOTHING TO DO WITH THE GAS PEDAL. IT SEEMS THAT OTHERS ARE HAVING SIMILAR ISSUES (HTTP://PRIUSCHAT.COM/FORUMS/GEN-III-2010-PRIUS-CARE-MAINTENANCE-TROUBLESHOOTING/72662-ACCELERATION-PROBLEM-OUR-2010-PRIUS-GEN-V-5.HTML#POST1052091). THIS COULD BE DANGEROUS, ESPECIALLY ON A WET ROAD. AND THE ROADS ARE SO TERRIBLE IN LOS ANGELES, THAT I EXPERIENCE THIS PROBLEM MORE OFTEN THAN I WOULD LIKE. HOPEFULLY ENOUGH PEOPLE REPORT THIS PROBLEM THAT TOYOTA TAKES ACTION. *TR

TL*THE CONTACT OWNS A 2010 TOYOTA PRIUS. WHILE DRIVING 25 MPH AND ATTEMPTING TO SLOW THE VEHICLE DOWN, IT LUNGED FORWARD. THE WEATHER WAS NOT A FACTOR AND THE FAILURE OCCURRED APPROXIMATELY FOUR TIMES. THE FAILURE HAS NOT BEEN DIAGNOSED BY THE DEALER. THE CONTACT IS CONCERNED THAT THE RISK COULD CAUSE A CRASH TO OCCUR. THE FAILURE MILEAGE WAS 5,000.

2010 TOYOTA PRIUS, I PICK UP THE CAR AT THE DEALER ON 20 NOV 2009. WHEN EVER I SET THE CRUISE CONTROL IT WORKS FINE UNTIL I TAP THE BRAKE TO TURN IT OFF. THE CAR SPEEDS UP. I HAVE TO PRESS HARDER ON THE BROKE TO GET THE CRUISE CONTROL TO DISENGAGE AND SLOW DOWN. ITS AS IF THE CRUISE CONTROL IS NOT SENSING THAT THE BRAKE WAS DEPRESSED AND RELEASING. I TOOK THE CAR BACK TO THE DEALER ON 12-20-2009 HAVING DRIVEN IT A MONTH AND HAVING A CHANCE TO GET A FEEL FOR THE CAR. THEY SAID NOTHING WAS WRONG THAT ALL THE CARS DID THIS. EVERY CAR I HAVE OWNED HAS HAD CRUISE CONTROL ON IT AND HAS NEVER ACTED THIS WAY. I ALSO DRIVE A RX350 LEXUS THAT DOES NOT HAVE HIS PROBLEM. *TR

1. TRAFFIC CAME TO A SUDDEN STOP SO I HIT THE BRAKES. 2. VEHICLE HIT A POTHOLE WHILE I WAS TRYING TO STOP AND THE BRAKES FELT LIKE THEY RELEASED. I HAD TO HIT THE BRAKES AGAIN IN ORDER TO GAIN CONTROL OF THE VEHICLE AND BRING THE CAR TO A STOP. 3. I WAS TOLD BY THE DEALERSHIP THAT NOTHING COULD BE DONE. *TR

TL*THE CONTACT OWNS A 2010 TOYOTA PRIUS. WHILE DRIVING APPROXIMATELY 15 MPH OVER A SPEED BUMP OR POTHOLE THE VEHICLE ACCELERATED FOR A FEW SECONDS WHILE HER FOOT WAS ON THE BRAKE PEDAL. ALTHOUGH THE SURGE LASTS FOR A FEW SECONDS AND OCCURRED CONSISTENTLY SHE DOESN'T HAVE CONTROL OF THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER WHO STATED THAT THE ACCELERATOR PEDAL WAS OPERATING NORMALLY. THE FAILURE MILEAGE WAS 8,000.

MY 2010 TOYOTA PRIUS BRAKES FAIL ( DISENGAGE OR RELEASE) WHEN BRAKING ON ICY SURFACE OR WHILE BRAKING AND A BUMP OR POT HOLE IS HIT. I FIST NOTICED THIS ISSUE ON DEC. 19, 2009 AFTER A SNOW STORM BUT IT CONTINUES TO HAPPEN EVEN ON DRY ROAD WHEN A SMALL BUMP IS HIT. I REPORTED IT TO TOYOTA AND THEY TOLD ME THEY COULD NOT FIND ANY ISSUES WITH THE BRAKES. NOTHING WAS DONE TO CORRECT THE PROBLEM. THE CAR ACTUALLY GOES FASTER WHEN YOU HIT A BUMP WHILE BRAKING. THE BRAKES RELEASE AND IT FEELS LIKE YOU HAVE NO BRAKES AT ALL FOR A FEW SECONDS. THIS IS NOT RIGHT! IT HAPPENS VERY UNEXPECTEDLY AND YOU CAN NOT JUDGE YOUR BRAKING TIME CORRECTLY. IT HAPPENED TO ME RECENTLY WHEN STOPPING AT STOP SIGN BEFORE ENTERING A CROSS ROAD. I HIT A PATCH OF ROUGH ROAD AND IT DROVE ME TO STOP PASSED THE STOP SIGN AND WAS LUCKY THERE WERE NO ON COMING TRAFFIC. *TR

THIS IS A COMPLAINT ABOUT A RECURRING EVENT THAT HAS SERIOUS IMPLICATIONS IN THE WRONG SITUATIONS. FOR FIVE TIMES NOW, SINCE DRIVING OUR NEW CAR, OUR BRAKES HAVE RELEASED AFTER GOING OVER A BUMP IN THE ROAD. THIS BUMP CAN BE AS SMALL AS A CRACK CAUSED BY A NEARBY TREE'S ROOTS, OR LARGER LIKE A POTHOLE. IT HAS ALSO OCCURRED WHEN DRIVING OVER SLICK SEWER COVERS. IT TYPICALLY HAPPENS WHEN BRAKING, THEN HITTING THE BUMP, THEN BRAKES RELEASE, AND THE CAR IS NO LONGER BREAKING. THIS IS ESPECIALLY DANGEROUS IN HILLY CITIES LIKE SAN FRANCISCO, WHERE IF THIS HAPPENS GOING DOWNHILL, THE ACCELERATION ACCOMPANIED BY THE LACK OF BRAKING GOING DOWNHILL CAN RESULT IN CRASHING INTO THE NEXT CAR, OR WORSE, HITTING A CROSSING PEDESTRIAN AT A CROSS WALK. *TR

TL*THE CONTACT OWNS A 2010 TOYOTA PRIUS. THE CONTACT STATED THAT THE BRAKE FAILED TO ENGAGE WHEN HE DROVE APPROXIMATELY 25 MPH ON ROUGH ROAD SURFACES. THE DEALER STATED THAT THE ABS ENGAGED AND THAT WAS A NORMAL BRAKE FUNCTION. THE FAILURE OCCURRED SEVERAL TIMES INTERMITTENTLY. THE TOYOTA MANUFACTURER HAS NOT BEEN CONTACTED. THE FAILURE MILEAGE WAS 46,000.

I OWN A 2010 TOYOTA PRIUS THAT SEEM TO LOOSE BRAKING POWER WHEN I HAVE THE BRAKE PEDAL PRESSED DOWN AND THEN HIT A POTHOLE OR MANHOLE COVER. IT HAPPENS ALL THE TIME. WHEN I TOOK IT INTO THE DEALER A FEW MONTHS AGO THEY DIDN'T FIND A PROBLEM, BUT IT APPEARS TO BE A COMMON PROBLEM FOR THIS MODEL. *TR

2010 THIRD GENERATION PRIUS BRAKING PROBLEM , LOSS OF CONTROL ON ROUGH OR SLIPPERY SURFACE. *TR

WHILE BRAKING IF I HIT POTHOLES THE CAR SPEEDS UP FROM LOSS OF BRAKING ACTION EVEN THOU I AM STILL PUSHING ON THE BRAKE PEDAL. I HAVE TO QUICKLY LET UP AND APPLY BRAKES AGAIN TO STOP VEHICLE. HAS HAPPENED THREE TIMES NOW, TWICE IN THE LAST TWO DAYS. FIRST TIME THOUGHT IT WAS MY IMAGINATION, BUT NOW I KNOW THAT I WAS PUSHING ON THE PEDAL AND THE CAR JUST TOOK OFF UNTIL I REAPPLIED THE BRAKES. *TR

WHEN I AM BRAKING AND MY CAR HITS A POTHOLE, IT SURGES FORWARD AND THE BRAKES DO NOT WORK FOR A FEW SECONDS. THIS PROBLEM OCCURS EVERY TIME I HIT A POTHOLE OR BUMP IN THE ROAD. *TR