2011 Toyota Prius vehicle speed control problems

“I was driving my car and suddenly the traction , hand brake and ABS sign started showing up. I usually apply only 10% of force on brake pedal but after this I have to apply almost 60% of force to even slow down the car. Almost 90% force to stop the car It has threatened safety of my family. When diagnosed at autozone they told cannot determine error code. When reading in internet this seems to be common problem in prius. Please help is fixing the issue as it is not at my fault. This seems to be manufacturing defect.”

“The contact owns a 2011 Toyota Prius. The contact stated while her husband was driving approximately 40-50 MPH and depressing the accelerator pedal, the accelerator pedal failed to go back to the normal position and remained stuck. There was no warning light illuminated. The contact's husband depressed the brake pedal, and the engine revved significantly. The driver was able to pull to the side of the road. The driver turned off and restarted the vehicle, and the vehicle responded as needed. The dealer was notified of the failure and referred the contact to the manufacturer for assistance. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 119,000.”

“I was driving the vehicle around 55 mph when a check hybrid system warning popped up. About 30 seconds later the vehicle went from being in drive to B (brake mode) and the vehicle began to slow at a rapid pace with no warning. Could potentially cause an accident as this occurred with very little warning.”

“The conditions listed in Toyota Customer Support Program ZJB for the brake booster and master cylinder occurred after the 10 year in service date on my vehicle. Brake, ABS, and Traction control warning lights turn on intermittently and when this happens brake response is poor and cruise control shuts off. When applying the brakes an audible tat tat tat sound can be heard from the front of the car that sounds like the ABS being triggered. You should have toyota recall impacted cars and fix the issue as outlined in the TSB and support campaign.”

“BREAK ACTUATOR IS FAILING IN MY 2011 TOYOTA PRIUS. THE CAR NOW HAS A UNPREDICTABLE ABS BREAKING SYSTEM. SOMETIMES THE BREAKS WORK AND SOMETIMES THEY QUICKLY FAIL AND A ERROR LIGHT COMES ON. THE LIGHT THAN GOES OUT AS IF NOTHING HAPPENED AND ALL IS FINE. THIS IS A VERY DANGEROUS PROBLEM THAT WILL LEAD TO MANY ACCIDENTS BECAUSE THE VEHICLE TELLS YOU ITS GOOD TO GO, MEAN WHILE THE ABS SYSTEM IS FAILING TO STOP THE VEHICLE INTERMITTENTLY. I AM SCARED BECAUSE I DONT KNOW IF THE CAR WILL DO THIS ON A TURN THEN LOSE CONTROL INJURING MYSELF AND OTHERS.”

“A CHECK HYBRID SYSTEM ALERT CAME ON AND INCLUDED LIT BREAK, CHECK ENGINE, STEERING, ABS, SKID AND YELLOW TRIANGLE WITH AN ! MARK INSIDE. THE CAR STOPPED AND I COULD NOT MOVE IT. GOOD THING I WAS ON A SIDE STREET WITH LIGHT TRAFFIC. THIS HAPPENED AGAIN AFTER THE INVERTER WAS REPLACE; AND IT HAPPENED AGAIN AFTER THE 12 V BATTERY WAS REPLACED.”