2010 Lexus Hs

I PURCHASED A NEW 2010 LEXUS HS250H ON OCTOBER 31, 2009. I COMMUTE APPROXIMATELY 20 MILES EACH WAY TO MY OFFICE IN DOWNTOWN DENVER, CO. APPROXIMATELY 2 MONTHS AGO WHILE TRAVELING NORTH ON LINCOLN STREET AND BRAKING HARD TO SLOW FOR A LEFT TURN ONTO COLFAX WITH A GREEN LIGHT, I EXPERIENCED MOMENTARY BRAKE FAILURE AND WENT INTO THE INTERSECTION UNABLE TO SLOW OR STOP. THE STREET IN THE FAR LEFT TURN LANE HAS SEVERAL LARGE BUMPS AND I INITIALLY ATTRIBUTED THE PROBLEM TO THE CAR'S SUSPENSION WHEN I FILLED OUT A SURVEY FOR LEXUS. SINCE THAT EVENT, I HAVE HAD TWO MORE SIMILAR PROBLEMS AT THE SAME INTERSECTION. ON FEBRUARY 5, I REPORTED THE ISSUE TO THE LEXUS DEALERSHIP WHERE I PURCHASED THE CAR AND PROVIDED THEM IMFORMATION SIMILAR TO THE ABOVE DETAILS. THEY ARE LOOKING INTO THE ISSUE AT THIS TIME. I BELIEVE THAT THIS IS SIMILAR TO THE ISSUES REPORTED WITH THE 2010 PRIUS AND SHOULD BE INCLUDED WITH THAT RESEARCH. *CN

WE OWN A LEXUS HS-250H THAT SEEMS TO HAVE A PROBLEM WITH THE BRAKING SYSTEM. ON UNEVEN OR BUMPY ROAD SURFACES WHEN THE BRAKES ARE APPLIED THEY DO NOT INITIALLY RESPOND. IT TAKES A SECOND BRAKING APPLICATION FOR THE STOPPING PROCESS TO BEGIN. THIS DEFECT HAS OCCURRED APPROXIMATELY 4 TIMES SINCE WE PURCHASED THE CAR IN SEPTEMBER, 2009. *TR

WHEN AT A MID-SPEEDS (TYPICALLY 35 TO 50 MPH) AND ONE TRIES TO BRAKE ON A ROUGH, UNEVEN OR LOOSE GRAVEL SURFACE, THE CAR ACCELERATES AGAINST THE DRIVER'S BRAKING. THIS IS PARTICULARLY PROBLEMATIC WHEN MAKING A TURN FROM A BUMPY OR UNEVEN ROAD. THE ACCELERATION FORCE OVERPOWERS THE DRIVER'S BRAKING AND MAKES THE TURN DIFFICULT CAUSING THE DRIVER POTENTIALLY TO OVERSHOOT THE TURN. THIS ACCELERATION AGAINST BRAKING HAS ALSO OCCURRED ON STRAIGHT ROAD DRIVING WHEN ONE BRAKES FROM MID-SPEEDS ON UNEVEN, BUMPY OR LOOSE GRAVEL ROADS. THIS EVENT HAS OCCURRED REPEATEDLY IN SIMILAR CIRCUMSTANCES. *TR

I PURCHASED A LEXUS HS250 IN OCTOBER 2009. SINCE THEN, I HAVE EXPERIENCED AT LEAST 6 OCCASIONS FROM THE END OF OCTOBER 2009 TO EARLY FEBRUARY 2010 IN WHICH I BRAKED WITH THE INTENTION OF COMING TO A STOP. THE VEHICLE BEGAN TO SLOW DOWN IN THE BRAKING PROCESS, THEN THE BRAKES STALLED FOR A FEW SECONDS BEFORE RESUMING THE BRAKING ACTION. IT IS UNEXPECTED AND DANGEROUS BECAUSE YOU DON'T KNOW IF YOUR BRAKES ARE COMPLETELY STALLING OR NOT. FOR A COUPLE OF SECONDS, EVERYTHING JUST GIVES WAY BEFORE THE BRAKES SEEM TO BEGIN WORKING AGAIN. IN THAT SITUATION, YOU DON'T KNOW WHETHER TO PRESS DOWN A SECOND TIME ON THE BRAKE OR TO PUMP THE BRAKE PEDAL OR NOT DO ANYTHING. WHEN THIS EVENT HAPPENS, YOU FEEL AS IF YOU HAVE ABSOLUTELY NO CONTROL OVER THE OPERATION OF THE VEHICLE, SIMILAR TO DRIVING ON A SHEET OF ICE, EXCEPT NONE OF THOSE SAFETY RULES SEEM TO APPLY HERE. THIS HAS HAPPENED ABOUT EVERY FEW WEEKS. I HAVE NOTICED THAT IT SOMETIMES HAPPENS WHEN I AM DRIVING OVER AN UNEVEN SURFACE, BUMP, OR A POTHOLE IN THE STREET WHILE BRAKING. WHILE I HAVE NOT BEEN INVOLVED IN A CRASH, IT HAS WORRIED ME THAT THIS COULD LEAD TO ONE. *JB

TL*THE CONTACT OWNS A 2010 LEXUS HS250H. THE CONTACT WAS DRIVING APPROXIMATELY 60 MPH ON NORMAL ROAD CONDITIONS WITH THE ACCELERATION CRUISE CONTROL FEATURE ACTIVATED. THE CRUISE CONTROL SYSTEM FAILED TO FUNCTION WHEN IT WAS DISENGAGED. THE ACCELERATION CONTINUED, FOLLOWED BY AN UNINTENDED INCREASE IN SPEED. THE DRIVER WAS ABLE TO SLOW THE VEHICLE DOWN. THERE WERE FOUR SEPARATE OCCASIONS THAT THE IDENTICAL FAILURES OCCURRED WITHOUT WARNING. THE VEHICLE HAS NOT BEEN REPAIRED FOR THE MALFUNCTION AT THIS TIME. THE CONTACT HAD CONCERN OF THE POTENTIAL SAFETY HAZARD. THE FAILURE MILEAGE WAS 2,000. UPDATED 2/26/10 *CN THE CONSUMER WAS INFORMED BY THE DEALER, THE CRUISE CONTROL WAS DESIGNED THAT WAY. UPDATED 05/10/10*JB