2010 Toyota Prius complaints

2010 PRIUS BRAKE APPLIED IN ZERO TEMPERATURE WEATHER APPROACHING A RED LIGHT ON SLIGHT DOWN SLOPING ROAD COVERED IN ICE/SNOW. THE BRAKE PEDAL WAS PUSHED AS WOULD NORMALLY BE APPLIED (MAYBE APPROX 1/3 - 1/2 BRAKE PEDAL TRAVEL) AND THERE WAS NO APPLIED BRAKING. THE CAR KEPT ROLLING FORWARD TO WHERE I HAD TO MAKE A DECISION TO CONTINUE ROLLING WITH A RIGHT TURN INTO THE INTERSECTION AND CONTINUE TRAVEL. LUCKILY THE ONCOMING TRAFFIC WAS FAR ENOUGH AWAY TO NOT CRASH INTO ME. I WOULD ESTIMATE THAT THE BRAKE WAS APPLIED FOR ABOUT 1-2 SECONDS, ENOUGH TRAVEL TIME TO FORCE ME TO MAKE A DECISION THAT I NEEDED TO CONTINUE THROUGH THE INTERSECTION BEFORE THE ONCOMING TRAFFIC. THIS SAME TYPE OF SCENARIO OCCURRED ON AN EXIT OFF OF AN INTERSTATE RAMP DOWN ANOTHER DOWN SLOPE WITH ICE/SNOW THAT AGAIN WHEN THE BRAKES WHERE APPLIED, THE REGENERATIVE ENGINE BRAKE APPLIED, BUT WHEN THE ABS WENT TO ENGAGE DUE TO THE SLIPPERY SURFACE, THERE WAS A 1-2 SECOND DURATION OF SENSATION OF NO BRAKES. PUSHING PEDAL FURTHER (OR JUST WAITING THE 1-2 SECOND DELAY) SEEMED TO EVENTUALLY APPLY BRAKES. I AM A SYSTEMS/TEST ENGINEER THAT PERFORMS NUMEROUS WORK ON COMMERCIAL AND MILITARY AIRCRAFT AND I NOW KNOW HOW TO ANTICIPATE THIS SITUATION FOR MYSELF (I.E., I AM MORE CAREFUL ON BRAKING EARLIER ESPECIALLY ON SLIPPERY SURFACES MORE THAN NORMAL DISTANCE FROM MY OTHER HONDA VEHICLES ON SAME TYPE OF SURFACES TO ACCOUNT FOR THIS POSSIBLE 1-2 DELAY TIME IN BRAKING); HOWEVER, THIS IS UNACCEPTABLE FOR MY WIFE WHO DOES NOT

TL*THE CONTACT OWNS A 2010 TOYOTA PRIUS. WHILE DRIVING 10 MPH WITH THE BRAKE PEDAL ENGAGED, THE VEHICLE ACCELERATED ON ITS OWN . THE CONTACT WAS FORCED TO APPLY PRESSURE TO THE BRAKE PEDAL IN ORDER TO STOP THE VEHICLE. THE CONTACT HAS OWNED THE VEHICLE FOR 5 MONTHS AND THE FAILURE HAS OCCURRED TWICE. THE DEALER WAS CALLED AND STATED THAT THEY HAVE NOT RECEIVED ANY RECALLS FOR HIS VEHICLE; HOWEVER, TO BRING IT INTO TO THE DEALERSHIP FOR A DIAGNOSTIC TEST. NO REPAIRS HAVE BEEN MADE TO THE VEHICLE. THE FAILURE MILEAGE WAS UNKNOWN AND THE CURRENT MILEAGE WAS 3227. UPDATED 03/12/10. *LJ UPDATED 08/30/10*JB

WHEN DRIVING I SOMETIMES MOMENTARILY FEEL A PAUSE IN THE BRAKING SYSTEM OF MY NEW PRIUS. THIS OCCURS EVERY TIME I DRIVE ON A CERTAIN STREET AT A FAIRLY HIGH SPEED. WHILE I AM BRAKING MY RIGHT FRONT TIRE GOES THROUGH A POTHOLE WHILE MY FRONT LEFT TIRE REMAINS ON FLAT TARMAC. AS MY FRONT TIRE COMES OUT OF THE POTHOLE I FEEL AS IF THE BRAKES STOP WORKING FOR HALF A SECOND AND THEN THEY START WORKING AGAIN. I ESTIMATE THAT I AM DRIVING THROUGH THE POTHOLE AROUND 20-30 MILES AN HOUR. I DRIVE THIS WAY EVERY DAY FROM MY WORK TO HOUSE AND I AM ALWAYS BRAKING ON THIS STRETCH OF ROAD AS I TURN A CORNER RIGHT AFTER THE POTHOLE. THERE IS A TRAFFIC LIGHT RIGHT AFTER THE POTHOLE SO WHENEVER THE LIGHT IS GREEN AS I APPROACH THE POTHOLE THIS HAPPENS TO ME. THIS HAS HAPPENED TO ME AROUND 50 TIMES - EVER SINCE I BOUGHT MY NEW PRIUS IN SEPTEMBER 2009. *JB

AS I WAS GOING DOWNHILL, THE ROAD SURFACE WAS UNEVEN. I ATTEMPTED TO APPLY THE BRAKES. THE PEDAL WENT ALMOST TO THE FLOOR AS IF THERE WAS NO BRAKE FLUID. THE CAR CONTINUED TO GO FORWARD AS THE BRAKES DID NOT ENGAGE. AS I PUSHED THE BRAKE PEDAL FURTHER, THE BRAKES ENGAGED. *JB

TL*THE CONTACT OWNS A 2010 TOYOTA PRIUS. THE CONSUMER STATED AS HE BEGAN TO SLOW DOWN AND APPLIED THE BRAKES. THE VEHICLE TRAVERSED A PORTION OF THE ROADWAY THAT HAD SOME POTHOLES ON IT AND THE BRAKES RELEASED FOR WHAT SEEMED A SECOND. THE CONSUMER WAS DOING ABOUT 30 MPH AND PRESSED THE BRAKE PEDAL MORE FIRMLY. IT SEEMED AS THE VEHICLE WAS ATTEMPTING TO USE ABS IN A CONDITION THAT IT DEEMED WAS AN UNEVEN ROADWAY/ICY ROAD CONDITIONS. HOWEVER, THE CONDITION AT THE TIME WAS BARE AND DRY. THE CONSUMER BELIEVED THAT THE VEHICLE WOULD OPERATE AS EXPECTED IN DRY SMOOTH ROADWAY CONDITIONS, BUT WHEN THE ROAD SURFACE WAS BUMPY OR SLICK, THE ABS SYSTEM WOULD ACT AS IF THE VEHICLE WERE GOING TO SLIDE. THE DEALER PERFORMED THE SOFTWARE UPDATE TO ALLEVIATE THE PROBLEM. FAILURE MILEAGE WAS 4,500. *UPDATED 03/01/10 *BF UPDATED 05/10/10*JB

BRAKING PROBLEMS WITH 2010 TOYOTA PRIUS. SINCE THE PURCHASE OF THIS CAR ON AUGUST 22, 2009, UNDER THE CASH FOR CLUNKERS PROGRAM, MY WIFE HAS REPEATEDLY DESCRIBED THE SITUATION IN WHICH THE BRAKES RELEASE UNEXPECTEDLY. SPECIFICALLY, WHEN BRAKING AT LOW SPEEDS WHILE DRIVING OVER A RAIL CROSSING (SINGLE TRACK), THE BRAKES RELEASE MOMENTARILY AS THE CAR EXPERIENCES THE BUMPING MOTION INDUCED BY THE TRACKS. THIS CAN BE REPLICATED AT WILL. IN ADDITION, SHE HAS NOTICED A SIMILAR MOMENTARY RELEASE OF THE BRAKES WHEN APPROACHING A STOP SIGN ON A SLICK ROAD WHEN THE ANTI-LOCK BRAKE MECHANISM WAS ENGAGED. IN THESE FEW CASES, THE CAR ROLLED PAST THE STOP SIGN AND PARTIALLY INTO THE MAIN TRAVEL WAY. NOTE THIS WAS NOT THE RESULT OF SLIDING ON SLICK PAVEMENT OR THE PULSE-RELEASE OF THE ANTI-LOCK BRAKE SYSTEM BUT THE RELEASE OF BRAKES. NONE OF THESE CASES RESULTED IN ANY PHYSICAL IMPACT OR PROPERTY DAMAGE--JUST THE DISCONCERTING FEELING THAT THE MOMENTARY LOSS OF BRAKING ENGENDERED. WHEN MY WIFE FIRST NOTED THIS, I WENT TO HTTP://PRIUSCHAT.COM/, THE PRIUS OWNERS FORUM (WHICH I THINK IS SPONSORED BY TOYOTA). THE BRAKING ISSUE WAS NOTED BY OTHER FORUM MEMBERS. *JB

WHEN THE 2010 TOYOTA PRIUS GOES OVER A POTHOLE OR OVER AN ICE PATCH IS LOOSES BRAKING ABILITY FOR ONE OR TWO SECONDS. THIS HAS HAPPENED NUMEROUS TIMES, THE LAST TIME ON THE MORNING OF FEBRUARY 3, 2010. *JB

2010 PRIUS LOSES BRAKE FORCE WHEN REGENERATIVE BRAKING IS USED OVER POTHOLES OR OTHER UNEVEN SURFACES. IT APPEARS THAT WHEN WHEEL SLIP OCCURS WHEN BRAKING IN SUCH INSTANCES, THE REGENERATIVE SYSTEM IS DISENGAGED CAUSING LOSS OF BRAKING UNTIL THE FRICTION BRAKES ARE ENGAGED BY DEPRESSING THE BRAKE PEDAL FARTHER. THIS HAS OCCURRED ON MULTIPLE OCCASIONS AND CAN BE REPLICATED. *JB

OUR 2010 PRIUS SOMETIMES LURCHES FORWARD ON HITTING A BUMP OR DRIVING ON ROUGH TERRAIN. THIS HAPPENS PREDICTABLY AT CERTAIN LOCATIONS. BOTH MY WIFE AND I HAVE OBSERVED THIS BEHAVIOR, MAYBE A COUPLE OF TIMES/WEEK. NOT CERTAIN WHETHER IT'S MOMENTARY ACCELERATION OR LOSS OF BRAKING BUT WE THINK IT'S LOSS OF BRAKING. WE HAVE NOT YET TAKEN ANY CORRECTIVE ACTION. I READ IN THE PAPER THAT TOYOTA IS PLANNING A RECALL. *JB

INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) I AM A RETIRED COLONEL, USAF, BUT CONTINUE TO WORK FOR THE AF AS A CIVILIAN ATTORNEY. I PURCHASED A 2010 TOYOTA PRIUS HYBRID, [XXX] , ON 9 NOV 09. SINCE THAT TIME, AS RECENT AS LAST EVENING WHEN I PULLED THE VEHICLE INTO OUR GARAGE, BETWEEN MY WIFE AND I WE HAVE EXPERIENCED ON APPROXIMATELY SIX OCCASIONS THE PROBLEM YOU HAVE RECEIVED OTHER REPORTS ABOUT CONCERNING THE VEHICLE'S BRAKES. THE "RELEASE" AS I CALL IT, OCCURRED PRIMARILY WHEN WE HIT IRREGULAR PATCHES OF ROADWAY, SUCH AS POTHOLES, WASHBOARD-TYPE SURFACES AND THE LIKE. LAST EVENING, AS I MENTIONED, IT ACTUALLY OCCURRED AS I WAS ENTERING THE GARAGE. I APPROACHED A LITTLE FASTER THAN USUAL AND WAS BRAKING AS THE FRONT TIRES ENCOUNTERED THE ELEVATED CEMENT BEYOND THE BASE OF THE GARAGE DOOR. THE BRAKING ACTION WAS LOST JUST FOR A MOMENT AFTER THE IMPACT WITH THE CEMENT. IT'S NOT THAT THE ENGINE SPEEDS UP WHEN IT HAPPENS, IT'S THE FORWARD MOMENTUM OF THE VEHICLE THAT INCREASES WITH LOSS OF THE BRAKING ACTION. THAT HAS BEEN THE CASE EACH TIME IT HAS HAPPENED. IN FAIRNESS TO THE DEALERSHIP, I HAVE NOT NOTIFIED IT YET BECAUSE I READ NOT TOO LONG AFTER THE FIRST TIME THIS OCCURRED THAT OTHER OWNERS WERE BEGINNING TO REPORT THIS PROBLEM AND THAT TOYOTA WAS DEVELOPING A SOFTWARE FIX FOR IT. I ASSUMED SHORTLY THERE WOULD BE SOMETHING IN THE NATURE OF A RECALL AND OWNERS WOULD BE NOTIFIED TO BRING THEIR VEHICLES IN FOR THE MODIFICATION. I

2010 TOYOTA PRIUS I'VE HAD AT LEAST 2 EXPERIENCES WHERE UNDER HARD BRAKING AND TRANSITIONING TO DIFFERENT LEVELS IN ROAD SURFACE, THE VEHICLE HAS LURCHED FORWARD. WHEN THIS OCCURRED, EACH TIME, I THOUGHT I HAD BEEN HIT IN THE REAR CAUSING MY VEHICLE TO BE PUSHED FORWARD. I BLOGGED OTHER OWNERS, AND HAVE BEEN TRYING TO GET AN ANSWER FOR A FEW MONTHS. I SAW THE RECENT NEWS ON PRIUS BRAKES AND FEEL THIS IS WHAT'S HAPPENING WITH MY 2010 PRIUS.*JB

2010 TOYOTA PRIUS BRAKING PROBLEM. I BOUGHT A 2010 TOYOTA PRIUS APPROX 4 MONTHS AGO. DURING THE APPROX 10000 MILES I HAVE PUT ON THE CAR, I HAVE EXPERIENCED A BRAKING ISSUE APPROX 5 TO 6 TIMES. MOST TIMES I WAS BRAKING FOR A STOP SIGN IN A 30 MPH ZONE. ONCE I WAS BRAKING FOR A RED LIGHT IN A 45 MPH ZONE. EACH TIME, THERE WAS BUMPY ROAD DURING THE BRAKING, AND THE BRAKES RELEASED. I CAN'T SAY IF THE CAR ACCELERATED, OR IT JUST SEEMED THAT WAY BECAUSE OF THE BRAKE RELEASE. IT DID NOT CAUSE ANY ACCIDENTS, BUT ONCE IT WAS ON A SNOW COVERED HILL AND I SLID OUT INTO A 2 LANE 50 MPH HIGHWAY. THERE WAS NO TRAFFIC, AND THEREFORE NO ACCIDENT. ANOTHER TIME, I WAS STOPPING FROM 45 MPH AT A RED LIGHT, AND UNDER BRAKING, AGAIN ON BUMPY ROADS, THE BRAKES RELEASED AND I NEARLY HIT THE CAR IN FRONT OF ME. THE BRAKES RELEASED ENOUGH ALLOW ME TO PANIC AND JAM THE BRAKE PEDAL TO THE FLOOR. THE CAR STOPPED QUICKLY. *JB

WHEN APPLYING THE BRAKES TO COME TO A STOP AT A RED LIGHT, MY 2010 TOYOTA PRIUS IV HIT SOME ROUGH ROAD AND BEGAN TO SURGE/ACCELERATE EVEN WITH MY FOOT ON THE BRAKE. I PRESSED HARDER UNTIL THE BRAKES WERE RE-ENGAGED. THIS HAS HAPPENED UNDER SIMILAR CIRCUMSTANCES (ROUGH ROAD) THREE TIMES SINCE TAKING OWNERSHIP OF THE CAR SEPT 15, 2009. *JB

MY 2010 TOYATA PRIUS (PURCHASED IN SEPT. 2009) HAS HAD REPEATED PROBLEMS WHILE BRAKING OVER A PATCH OF ROAD WITH SMALL POTHOLES. IF THE BRAKES ARE ENGAGED WHILE OVER THE PATCH OF UNEVEN ROAD, THE CAR LURCHES OR "JUMPS" OVER THE SPOT ON THE ROAD AND THE BRAKES DON'T BEGIN TO CATCH UNTIL THE CAR GETS OVER THE PATCH. THIS HAS HAPPENED 5-10 TIME OVER THE LAST FOUR MONTHS AT A STOP LIGHT. *JB

I'VE OWNED MY 2010 TOYOTA PRIUS FOR 5 MONTHS NOW AND FREQUENTLY (AT LEAST TWICE A MONTH) EXPERIENCE PROBLEMS WHEN BRAKING ON UNEVEN GROUND. WHEN I AM HITTING THE BRAKES AND RUN OVER A POTHOLE OR SUDDEN BUMP, THE CAR STOPS SLOWING DOWN AND ALMOST SHOOTS FORWARD (FEELS LIKE I'M HYDROPLANING) FOR A SPLIT SECOND THEN RESUMES BRAKING. THIS HAPPENED MOST RECENTLY TODAY AND COULD HAVE CAUSED AN ACCIDENT IF I WERE CLOSER TO THE CAR IN FRONT OF ME WHEN IT OCCURRED. *JB

APPLIED BRAKES AT A STOP LIGHT. THE PRIUS (PURCHASED IN JULY OF 2009) RAN OVER A BUMP, AND IT SEEMED LIKE THE BRAKE DISENGAGED. I REMOVED MY FOOT FROM THE BRAKE PEDAL AND REAPPLIED THE BRAKES. THE BRAKES SEEMED TO ENGAGE AND CAME TO A STOP. *JB

1. I WAS DRIVING ON A LOCAL ROAD AND WAS SWITCHING LANES. I PRESSED MY BRAKE PEDAL VERY SLIGHTLY AS I WAS CROSSING THE LANE DIVIDER AND AS I HIT ONE OF THE PLASTIC BUMPS, MY CAR ACCELERATED FORWARD. 2. THIS HAS RECURRED MANY TIMES AND THERE WERE NO VEHICLES IN FRONT OF ME EVERYTIME IT HAPPENED SO I WAS ABLE TO COME TO A STOP. SEVERAL TIMES I WOULD EITHER CROSS THE PEDESTRIAN WALKWAY AT THE INTERSECTION WHEN THIS ACCELERATION OCCURS. 3. I TOOK MY CAR TO THE DEALER SEVERAL TIMES AND EVERYTIME THEY TOLD ME IT WAS NORMAL AND THERE WAS NO PROBLEM. THEY WERE LYING AND COMPLETELY CLUELESS!!!*JB

THE BRAKES ON MY 2010 TOYOTA PRIUS FAILED TO ENGAGE WHILE DRIVING OVER A POTHOLE. THE CAR SEEMED TO ACCELERATE BRIEFLY BUT THEN THE BRAKES KICKED IN ONCE I HIT THE BRAKE PEDAL AGAIN HARDER. THIS IS THE THIRD INCIDENT OF SIMILAR PROBLEMS SINCE I PURCHASED THE VEHICLE IN JULY 2009. *JB

I DRIVE A 2010 TOYOTA PRIUS. ON MULTIPLE OCCASIONS WHILE ATTEMPTING TO SLOW DOWN ON ROUGH SURFACES, THE BRAKES TEMPORARILY STOPPED WORKING FOR 1-2 SECONDS EVEN THOUGH THE BRAKE PEDAL WAS DEPRESSED. THE MOST RECENT INCIDENT OCCURRED WHILE EXITING THE HIGHWAY AND ATTEMPTING TO SLOW DOWN QUICKLY ON ROUGH PAVEMENT. LUCKILY, THERE WERE NO OTHER CARS IN FRONT OF ME OR THERE WOULD HAVE BEEN A COLLISION. IF A CAR HAD BEEN IN FRONT OF ME ON ANY OF THE OCCASIONS THEN THERE WOULD HAVE LIKELY BEEN A COLLISION. *JB

PRIUS BRAKING PROBLEM WHEN GOING SLOW SPEEDS OVER A BUMP OR POTHOLE. *JB

WE DRIVE A 2010 PRIUS, PURCHASED THIS FALL. ON THREE SEPARATE OCCASIONS, WHEN I TRIED TO BRAKE IN AN AREA WITH SOME ICE, THE CAR ACCELERATED RATHER THAN STOPPED. ON TWO OF THE OCCASIONS, I FAILED TO STOP AT AN INTERSECTION (NO ONE COMING IN THE OPPOSITE DIRECTION) AND ON THE THIRD, THE ICE PATCH WAS ABOUT 3 FT IN DIAMETER ON ONE SIDE OF THE CAR ONLY. I WAS GOING RATHER SLOWLY, FOLLOWING A CAR THAT SLOWED FOR A SPEED BUMP. LUCKILY THE OTHER CAR ACCELERATED AND I DID NOT HIT IT. THE SPEED BUMP SLOWED ME DOWN AND THEN THE BRAKES STARTED WORKING. *JB

ON OCCASION THE BRAKING ON OUR 2010 PRIUS HAS NOT FELT RIGHT. SOMETIMES WHEN BRAKING AND HITTING A BUMP OR POTHOLE, THERE SEEMS TO BE A BRIEF PERIOD WHERE THE CAR FEELS LIKE ITS ACCELERATING OR THE BRAKES ARE NOT SLOWING IT DOWN PROPERLY. KEEPING PRESSURE ON THE BRAKES GETS BY THE PROBLEM BUT IT IS VERY UNSETTLING AND I HAVE NEVER HAD THIS PROBLEM WITH BRAKES IN ANY CAR BEFORE. IT HAS HAPPENED A FEW TIMES SINCE WE BOUGHT THE CAR IN JULY 2009 BUT VERY INTERMITTENTLY. THE DATE I AM PICKING IS JUST AN APPROXIMATE DATE FOR ONE OF THE INCIDENTS. I AM REPORTING THIS NOW IN LIGHT OF THE RECENT PUBLICITY ABOUT SIMILAR EVENTS REPORTED BY OTHER OWNERS, WHICH MADE ME REALIZE WHAT I HAD BEEN NOTICING WAS A REAL ISSUE. *JB

DROVE CAR OVER SEVERAL POTHOLES AND ATTEMPTED TO BAKE QUICKLY. BRAKES FAILED AND I HIT CAR IN FRONT OF ME. MY CAR BOUNCED OFF CAR IN FRONT OF ME AND I AGAIN HIT BRAKES SHARPLY. THEY FAILED AGAIN AND I HIT THE CAR IN FRONT OF ME AGAIN. ROAD CONDITIONS WERE WET AND SLIPPERY. *JB

I OWN A 2010 TOYOTA PRIUS WHICH WAS PURCHASED IN SEPTEMBER 2009. MY BRAKES FAIL TO IMMEDIATELY STOP MY CAR WHEN APPLIED GOING OVER BUMPY SECTIONS IN THE ROAD, HITTING A POTHOLE, OR WHEN ON SLIPPERY SECTIONS OF THE ROAD. WHEN HITTING A BUMP IT ACTUALLY FEELS LIKE THE CAR LURCHES FORWARD. THE CAR WILL EVENTUALLY STOP AFTER PUSHING THE BRAKE TO THE FLOOR WITH FORCE. IT IS VERY DISCONCERTING AND THE POTENTIAL FOR HITTING THE CAR IN FRONT OF YOU OR A PERSON IS VERY HIGH. *JB

2010 PRIUS - BRAKES STOP WORKING IF THEY ARE BEING APPLIED WHEN CAR GOES OVER BUMP OR UNEVEN ROAD SERVICE. *JB

WHEN MY 2010 PRIUS GOES OVER BUMPS THE BRAKES DISENGAGE FOR A SECOND OR TWO AND THE CAR LURCHES FORWARD. THIS HAS HAPPENED SEVERAL TIMES. *JB

I OWN A TOYOTA PRIUS 2010 PURCHASED IN THE SUMMER OF 2009. I HAVE EXPERIENCED BRAKING ISSUES UNDER CERTAIN CONDITIONS. *JB

SUDDEN TEMPORARY LOSS OF BRAKES IN A 2010 PRIUS. *JB

WHENEVER I AM DRIVING AND HIT A POTHOLE OR BUMP ON THE ROAD, IMMEDIATELY AFTER GOING OVER THE POTHOLE OR BUMP I FEEL LIKE MY PRIUS SURGES FORWARD OR SPEEDS UP. THIS HAPPENS WHENEVER I AM GOING AT A CONSTANT SPEED OR WHEN I'M BRAKING. IT HAS HAPPENED SINCE I BOUGHT THE CAR (TWO MONTHS AGO) BUT YESTERDAY MORNING IT SCARED ME MORE BECAUSE I WAS GOING OVER A REALLY BAD ROAD WITH MANY BUMPS. AS I APPROACHED A RED LIGHT I BEGAN TO BRAKE EARLY BUT AS SOON AS I GOT CLOSE TO THE STOP THERE WAS A BUMP BEFORE IT AND MY CAR LUNGED FORWARD CAUSING ME TO STOP PAST THE WHITE LINE OF THE STOP SIGN. THIS HAPPENS ALL THE TIME WHEN I HIT A POTHOLE OR BUMP ON THE ROAD. *JB

MY TOYOTA PRUIS 2010 WHICH I PURCHASED ON NOV.30 2009 HAD UNEXPECTEDLY LURCHED FORWARD WHEN I WAS SLOWING DOWN AND APPLYING THE BRAKE. I WAS TAKEN BY SURPRISE AND FORTUNATELY IT STOPPED AFTER I STEPPED ON THE BRAKE VERY HARD. THIS HAS HAPPENED SEVERAL TIMES ALREADY. *JB

I PURCHASED A 2010 TOYOTA PRIUS IN MID-JUNE. I AM WRITING TO REPORT THAT I HAVE ALSO EXPERIENCED THE LOSS OF BRAKES WHILE TRAVELING OVER UNEVEN SURFACES THREE SEPARATE TIMES. IT IS QUITE UNNERVING WHEN YOU ARE IN MID-BRAKE AND IT MOMENTARILY STOPS WORKING. I AM A VERY SAFE DRIVER, KEEPING A GOOD DISTANCE BETWEEN MY VEHICLE AND THE CARS AHEAD OF ME; HOWEVER, SOMETIMES YOU DO NEED TO STOP SUDDENLY AND I AM CONCERNED THAT IF THERE IS A POT HOLE BETWEEN ME AND THE CAR, THE PRIUS WILL NOT BE ABLE TO STOP IN TIME. THIS PROBLEM HAS NOT RESULTED IN ANY CRASHES BUT I HOPE THAT TOYOTA TAKES THESE COMPLAINTS SERIOUSLY AND DOES EVERYTHING POSSIBLE TO FIX THE 2010 VEHICLES MANUFACTURED BEFORE JANUARY 2010. ON THAT NOTE, I WAS EXTREMELY SURPRISED TO HEAR THAT TOYOTA KNEW OF THIS ISSUE AND FIXED IT MID-YEAR BUT DID NOTHING TO NOTIFY THE OWNERS OF THE INITIAL 2010 MODEL OF THEIR FINDINGS OR OFFER A FIX. THAT IS BAD BUSINESS PRACTICE, SOMETHING I DID NOT EXPECT FROM TOYOTA. *JB

WHILE SLOWING DOWN WITH THE BRAKES, WHEN I HIT A BUMP OR POTHOLE ON THE ROAD, MY CAR LURCHES FORWARD FOR A SPLIT SECOND AND I LOSE CONTROL OF THE ABILITY TO BAKE. *JB

MULTIPLE TIMES WHEN BRAKING IN MY 2010 TOYOTA PRIUS, THE CAR HAS SUDDENLY LURCHED FORWARD INSTEAD OF STOPPING. IN ALL THESE INCIDENTS, THE ROAD WAS EITHER SLIGHTLY WET OR THE CAR HAD JUST MOVED OVER A BUMP OR POTHOLE. *JB

2010 TOYOTA PRIUS BRAKING ISSUE...I HAVE HAD THIS ISSUE A NUMBER OF TIMES. I WILL BE DRIVING AND SEE A POTHOLE/BUMP COMING UP. I SLOW DOWN AND BRAKE BUT ONCE THE CAR GOES OVER THE POTHOLE/BUMP THE BRAKES DO NOT WORK- INSTEAD THE CAR ACCELERATES FORWARD WITH A LUNGING/JERKY FEELING. IT IS NOT RIGHT. I TOOK THE CAR INTO THE DEALER ON 10.27.09. THEY COULD NOT "DUPLICATE" THIS PROBLEM AND COULD NOT FIX IT. I CALLED TOYOTA HEADQUARTERS AND THEY OPENED A CASE . THEY SAID I SHOULD TAKE IT BACK TO THE DEALER AND TO SEE IF THEY COULD DUPLICATE IT. CASE # 091139820. THERE IS A BIG PROBLEM WITH THE BRAKES- THE CAR SHOULD SLOW DOWN/STOP AND NOT SPEED UP. IF A CAR OR PEDESTRIAN HAD BEEN RIGHT IN FRONT OF MY CAR I WOULD HAVE HIT THEM NO DOUBT. *JB

I WAS APPROACHING AN INTERSECTION IN DECEMBER DURING A SNOW STORM. THE ROAD WAS SNOWY AND I BRAKED, BUT MY 2010 PRIUS DID NOT IMMEDIATELY STOP. I WENT 10 - 15 FEET BEFORE THE CAR STOPPED. IT WAS VERY SCARY, BUT LUCKILY THERE WAS NO OTHER CAR IN THE ROAD, OR I WOULD HAVE BEEN HIT. *JB

TOYOTA 2010 PRIUS BRAKING PROBLEM -- I PURCHASED THE CAR 8/09 AND WITHIN ABOUT 1 MONTH NOTICED BRIEF BRAKING FAILURE -- AT FIRST THOUGHT IT WAS MY IMAGINATION. LATER THOUGHT IT WAS FROM LOSING GRIP WITH THE ROAD SURFACE MOMENTARILY AS IN GOING OVER A SURFACE IRREGULARITY. THIS HAPPENED SEVERAL TIMES ALBEIT INTERMITTENTLY. THEN FOR A COUPLE OF MONTHS IT WAS NOT A NOTICED PROBLEM. LAST WEEKEND I EXPERIENCED IT AGAIN. IT WAS ON A CLEAR AND SEEMINGLY EVEN SURFACE AS I TRIED TO SLOW COMING TO A TRAFFIC LIGHT. IT IS BRIEF AND THEN THE BRAKES DO SUCCESSFULLY ENGAGE. *JB

THIS IS REGARDING THE 2010 TOYOTA PRIUS. I JUST TRADED IN MY 2008 PRIUS FOR THE 2010 IN DECEMBER 2009. I HAVE EXPERIENCED TEMPORARY LOSS OF BRAKES 3-4 TIMES WHEN HITTING SMALL POT HOLES. THIS ONLY LASTS FOR A COUPLE OF SECONDS, BUT IT APPEARS TO HAPPEN RANDOMLY WITH NO WARNING. I HAVE CONTACTED THE DEALERSHIP WHERE I PURCHASED THE PRIUS, BUT THEY CANNOT ACT UNTIL THEY HEAR FROM TOYOTA. SO, I MUST JUST DRIVE AS SAFELY AS POSSIBLE, AND STAY ALERT. *JB

I HAVE A 2010 PRIUS, I HAVE ALSO NOTICED LOSS OF BRAKES. WHEN COMING TO A STOP OR GOING AROUND A CORNER AND HITTING A POT HOLE THE BRAKES SEEM TO SLIP. I CALLED THE DEALER TODAY IN KANSAS CITY THEY TOLD ME THEY HAD NO RECALLS ON THE BRAKES FOR THE 2010 PRIUS. CAN ANYTHING BE DONE? ON GOING PROBLEM! MY DEALER IS MOLLE TOYOTA. *JB

I'VE EXPERIENCED 2 PROBLEMS WITH THE BRAKES ON MY 2010 TOYOTA PRIUS. THE FIRST HAPPENS WHEN I AM APPLYING MY BRAKES WHILE GOING OVER A POT HOLE. THE BRAKES APPEAR TO RELEASE AND CATCH AGAIN. THIS HAS HAPPENED NUMEROUS TIMES UNDER THE SAME CONDITIONS. SECONDLY, I'VE NOTICED THAT WHEN THE CAR HAS BEEN PARKED AND THE WHEELS GET WET, WHETHER BY RAIN OR FROM WASHING THE CAR, AS I BACKUP OR GO FORWARD DOWN AN INCLINE, THE BRAKES SEEM TO "GRAB" OR "STICK" WHEN LIGHT PRESSURE IS APPLIED TO THE BRAKES. THE RESULTING STOP IN THE CAR IS AS THOUGH I HAD JAMMED ON THE BRAKES QUICKLY AND WITH A GREAT DEAL OF FORCE. *JB

MY TOYOTA PRIUS 2010 (5000 MILES) FEW TIMES ALREADY HAS AN "ACCELERATOR THAT GOES WILD", BUT LUCKILY FOR ME, I CAN HIT THE BRAKES. IT HAPPENED ONLY WHEN I DRIVE BACK FROM MY GARAGE. *JB

2010 PRIUS BRAKING PROBLEM: WHEN BRAKING AND VEHICLE ENCOUNTERS A BUMP IN THE ROAD VEHICLE ACCELERATES AND SURGES FORWARD. THIS HAS OCCURRED APPROX 15-20 OCCASIONS. FORTUNATELY WE HAVE BEEN ABLE TO STOP THE VEHICLE SAFELY. REPORTED TO DEALER AND WAS INFORMED THIS WAS "NORMAL". *JB

ON 7 DIFFERENT OCCASIONS SINCE PURCHASING OUR TOYOTA PRIUS 6 MONTHS AGO, WHILE PUSHING THE BRAKES, THE CAR HAS LURCHED FORWARD AS THOUGH SOMEONE PUSHED DOWN ON THE GAS. *JB

TL- THE CONTACT OWNS A 2010 TOYOTA PRIUS. WHENEVER THE CONTACT DRIVES THE VEHICLE AT ANY SPEED AND TRAVELS OVER AND BUMP OR A POT HOLE THE CONTACT NOTICED THAT THE BRAKES WILL MOMENTARILY DISENGAGE AND THEN RETURN TO NORMAL. THE VEHICLE HAS NOT BEEN DIAGNOSED AND THE CONTACT HAS NOTICED THE FAILURE SINCE THE DAY THE VEHICLE WAS PURCHASED. THE CURRENT AND FAILURE MILEAGES WERE 5500. BML

I OWN A 2010 TOYOTA PRIUS II. I'VE NOTICED THAT WHEN I RUN OVER A BUMP OR A POTHOLE ON THE ROAD, THE CAR SEEMS TO ACCELERATE OR JOLT FORWARD. IT HAPPENS WHILE I BRAKE TO A STOP SIGN AND RUN OVER A BUMP OR POTHOLE. IT HAS ALSO HAPPENED WHILE LETTING GO OF THE GAS PEDAL BUT NOT STEPPING ON THE BRAKE. THEREFORE, I HAVE TO QUICKLY STEP ON THE BRAKE EVEN HARDER TO STOP OR SLOW DOWN THE CAR. DURING ONE INCIDENT, I NEARLY RAN INTO A PEDESTRIAN CROSSING THE STREET. IT WAS A 4 WAY STOP AND I APPROACHED SLOWLY. THE PEDESTRIAN WAS DIRECTLY IN FRONT OF MY VEHICLE AND HE HAD THE RIGHT OF WAY. I SLOWLY APPROACHED AND AS MY TIRE RAN OVER THE PAINED "STOP" ON THE PAVEMENT, MY VEHICLE JOLTED FORWARD. IT WAS A CLOSE CALL AND IT SCARED THE PEDESTRIAN AND MYSELF. I WENT TO A TOYOTA DEALERSHIP AND HAS ASKED ABOUT THE PROBLEM. THEY SAID THEY DON'T OR HAVE NOT HAD ANY COMPLAINTS. TOLD ME THAT MINE WAS PROBABLY AN ISOLATED INCIDENT. I WENT HOME AND GOOGLED TO SEE IF OTHER PRIUS DRIVERS HAD THE SAME EXPERIENCE. I WAS SHOCKED TO HAVE READ A FEW INCIDENTS OF OTHER PRIUS OWNERS EXPERIENCING THE SAME THING. WHAT CAN I DO ABOUT THIS MATTER IF TOYOTA CLAIMS THAT MY EXPERIENCE WAS ISOLATED. GOING BACK TO THE TOYOTA DEALERSHIP WON'T RESOLVE ANYTHING. *TR

I HAVE A 2010 TOYOTA PRIUS THAT HAS OFTEN QUIT BRAKING WHEN I WAS DRIVING ON (A) A BUMPY DIRT ROAD (2 TIMES), (B) BUMPY PAVED ROAD (BUMPS CAUSED BY COMPACTED SNOW) (2 TIMES) AND (C) A LARGE DIP IN A ROAD NEAR MY HOUSE (APPROX.10 TIMES). THE LAPSE IN BRAKING IS PROBABLY LESS THAN A SECOND, BUT SCARES ME EVERY TIME. BEFORE MY PRIUS, I HAVE ALWAYS OWNED ALL-WHEEL DRIVE VEHICLES, AND I JUST ATTRIBUTED THE LACK OF BRAKING ON THE FACT THAT I NO LONGER HAVE ALL WHEEL DRIVE. BUT NOW THAT I THINK ABOUT IT. THAT SHOULDN'T AFFECT THE BRAKING! I CAN PRETTY MUCH COUNT ON THIS HAPPENING OVER A BUMPY ROAD, OR JUST ONE BIG BUMP, SO IF SOMEONE WANTS TO DRIVE MY CAR AND SEE WHAT IT DOES, THAT IS FINE WITH ME. LET ME KNOW IF I CAN HELP GET THIS PROBLEM FIXED. I HAVE NOT CONTACTED THE DEALER ABOUT THIS. SHOULD I? *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. *TR

MY 2010 TOYOTA PRIUS HAS A SERIOUS BRAKING PROBLEM, THE CAR LUNGES FORWARD AFTER APPLY MY BRAKES OVER A BUMPY SURFACE. THIS IS VERY UNEXPECTED AND LUCKILY NO ONE WAS IN FRONT OF ME OTHERWISE I WOULD HAVE HIT THEM. THIS ALREADY HAPPENED SEVERAL TIMES, TOOK MY CAR TO THE DEALER AND NO SOLUTION, I DON'T KNOW WHAT TO DO WITH A BRAND NEW LIKE THIS. *TR

BRAKE ON MY TOYOTA PRIUS 2010. A FEW MONTH AGO, I WAS DRIVING ON A STREET WITH MANY POTHOLES IN SAN FRANCISCO. I WAS COMING TO A STOP ON A RED LIGHT. I APPLIED THE BRAKE TO SLOW MY PRIUS. AS I WAS APPLYING THE BRAKE, THE CAR'S FRONT WHEEL HIT A POTHOLE. I SUDDENLY FEEL A TOTAL LOSE TO BRAKE ON THE CAR FOR A SLIGHT SECOND AS THE CAR SEEM LIKE/FEEL LIKE SURGE AHEAD. A FRACTION OF SECOND LATER, THE BRAKE WENT BACK TO NORMAL. IT WAS A VERY SCARY FEELING. I DID FEELING UNSAFE. I TALKED TO THE MASTER MECHANIC IN THE TOYOTA DEALER. HE SAID THE IT IS NORMAL AS THE ABS KICK IN WHEN THE CAR HIT THE POTHOLE. IT IS DOING IT JOB. HOWEVER, I HAD DRIVEN MORE THAN 5 CARS WITH ABS AND VSC AND NEVER HAVE THE KIND OF ISSUE. THIS ONLY HAPPEN ONCE. *TR

ON THURSDAY, JANUARY 28TH MY WIFE DROVE OUR 2010 TOYOTA PRIUS TO WORK. THE WAS A SLIGHT COATING OF SNOW ON THE GROUND. LESS THAT ONE BLOCK FROM OUR HOUSE, DRIVING AT NO MORE THAN 10-15 MPH SHE APPLIED THE BRAKES TO STOP AT A STOP SIGN. SHE REPORTED THAT THE BRAKES SEEMED TO LOCK (NOT THE NORMAL ABS FEEL) AND SHE LOST CONTROL OF THE CAR, WHICH THEN SLID/SKIDDED INTO A CURB WHICH PUNCTURED THE FRONT PASSENGER TIRE. THE CAR APPEARED TO HAVE ONLY A PUNCTURED TIRE WHICH WAS CHANGED BY A AAA SERVICE TRUCK. AFTER THE TIRE WAS CHANGED AND THE SERVICE TRUCK LEFT, I ATTEMPTED TO DRIVE THE VEHICLE TO A NEARBY TIRE DEALER. AS I TRIED TO DRIVE THE CAR, I HEARD AND FELT A LOUD SCRAPING NOISE THAT SOUND AND FELT LIKE THE BRAKES WERE STILL ENGAGED. EVEN THOUGH I WAS NOW ON CLEAR PAVEMENT IF I AT ALL TRIED TO APPLY THE BRAKES,THE ABS WENT ON, BUT IN AN AGGRESSIVE MANNER. THE ABS ALSO WENT ON A COUPLE OF TIMES EVEN WITHOUT ME PUTTING MY FOOT ON THE BRAKES. THE TIRE DEALER SAID HE THOUGHT WE MIGHT HAVE BEEN THE FRAME AND TOLD US NOT TO DRIVE THE CAR. THE CAR WAS TOWED TO A NEARBY BODY SHOP TO BE INSPECTED BY OUR INSURANCE COMPANY, STATE FARM. AS OF FEBRUARY 2, 2010 NO INSPECTION HAS TAKEN PLACE. IT IS OUR CONTENTION THAT SOMETHING MALFUNCTIONED WITH THE BRAKES WHICH CAUSED THE ACCIDENT. *TR

TL* THE CONTACT OWNS A 2010 TOYOTA PRIUS. THE CONTACT STATED THAT THE BRAKES FAILED WHEN DRIVING OVER UNEVEN PAVEMENT AT LOW SPEEDS. THE CONTACT ALSO STATED THE VEHICLE LURCHED FORWARD WHEN BRAKING UNDER NORMAL ROAD CONDITIONS. THE FAILURE HAPPENS WHEN DRIVING OVER A SPEED BUMP OR A POT HOLE. THE VEHICLE WAS TAKEN TO THE DEALER AND THE CONTACT WAS TOLD TO REMOVE THE FLOOR MATS BUT THE PROBLEM PERSISTED.THE CONTACT STATED THAT THE DEALER WAS UNABLE TO DUPLICATE THE FAILURE BECAUSE IT HAPPENS RANDOMLY . THE MANUFACTURER WAS CONTACTED BUT THE CONTACT DID NOT RECEIVE AN ACCEPTABLE ANSWER FROM THEM. THE FAILURE MILEAGE WAS 8,362.