NHTSA Complaint #10513264 — 2011 TOYOTA PRIUS

SERVICE BRAKES issue reported to NHTSA

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Complaint Details

ODI Number	10513264
Vehicle	2011 TOYOTA PRIUS
Component	SERVICE BRAKES
Date of Incident	October 1, 2011
Date Filed	May 23, 2013
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	MN

Consumer Description

VEHICLE LOSES BRAKING FUNCTION WHILE TRAVELING OVER POTHOLES, RECESSED MANHOLE COVERS, AND ALL OTHER TYPES OF ROUGH ROAD SURFACES. BRAKING FUNCTION IS DELAYED AND DOES NOT RETURN TO PREVIOUS POWER/BRAKING STRENGTH AFTER TRAVERSING THE OBSTACLE; THIS RESULTS IN THE NEED TO DEPRESS THE BRAKE PEDAL FURTHER TO RE-ENGAGE ENOUGH BRAKING FUNCTION TO STOP THE VEHICLE SAFELY. SERIOUS CONCERN IS THAT IF THE VEHICLE IS UNDER HARD BRAKING AT THE TIME OF THE EVENT WILL THERE BE ENOUGH TRAVEL LEFT IN THE BRAKE PEDAL TO REENGAGE THE BRAKES ENOUGH TO STOP. I HAVE EXPERIENCED THIS REGULARLY, ONE OR MORE TIMES PER MONTH, SINCE I PURCHASED THE CAR. UP UNTIL NOW MOST OCCURRENCES HAVE BEEN JUST A MINOR ANNOYANCE. I RESEARCHED THE PHENOMENON ON THE WEB AND MANY JUST WRITE IT OFF AS A NUISANCE / MINOR QUIRK OF THE VEHICLE SO I ACCEPTED THAT OPINION AND CONTINUED ON ENJOYING THE CAR. THAT IS UNTIL MAY 21, 2013 WHEN UNDER HARD BRAKING (30-35MPH DRIVING SPEED THEN HEAVY BRAKING TO 0MPH) THE VEHICLE TRAVELED OVER A RECESSED MANHOLE COVER AND IT FELT LIKE IT FULLY LOST ALL OF ITS BRAKING POWER AND NEARLY SENT ME INTO THE BACK OF THE VEHICLE STOPPING HARD AHEAD OF ME. I HAD TO FLOOR THE BRAKES BEFORE I FELT ANY BRAKING POWER RETURN AFTER THE BUMP. THIS ISSUE WILL LEAD TO AN ACCIDENT IF IT HAS NOT ALREADY. PLEASE KEEP AN EYE ON IT. *TR

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