The contact owns a 2011 Toyota Prius. The contact stated that while operating the vehicle, the emergency brake and traction control warning lights remained illuminated, and the stopping distance was extended while depressing the brake pedal. The vehicle was taken to the local dealer who diagnosed that the hydraulic brake booster was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure and informed the contact that the vehicle was no longer covered under the manufacturer extended coverage for the failure. The contact stated that over the years the vehicle had experienced failures which included brake pedal stiffness and unintended acceleration after driving over bumps in the roadway. The failure mileage was 9,000. The VIN was not available.

- Charlotte, NC, USA

The contact owns a 2011 Toyota Prius. The contact stated that while driving at various speeds, the brakes failed to operate as needed upon depression with several unknown warning lights illuminated. The contact took the vehicle to an independent mechanic where the vehicle was diagnosed with a defective brake control dynamic system. The contact was referred to the dealer where they confirmed the failure and provided her with an estimate for the repair. The manufacturer had yet to be notified about the failure. The vehicle had yet to be repaired. The failure mileage was approximately 155,000.

- Jetersville, VA, USA

The contact owns a 2011 Toyota Prius. The contact stated that extra effort was needed to stop the vehicle due to the brake pedal being depressed to the floorboard. The contact stated that the traction control, ABS, and brake warning lights would appear upon starting the vehicle. The contact had taken the vehicle to an independent mechanic where the vehicle was diagnosed with a defective ABS actuator control unit and the contact was provided an estimate for the repair. Neither the dealer nor the manufacturer had been notified of the failure. The vehicle was not repaired. The failure mileage was approximately 133,000.

- Kaufman, TX, USA

The contact owns a 2011 Toyota Prius. The contact stated while driving 50 MPH on the highway, the brake pedal was depressed but failed to respond. The contact depressed the brake pedal harder and the vehicle almost came to a complete stop. The ABS warning light, the brake warning light, and the traction control warning light illuminated. The contact stated that she exited the highway and was able to continue to drive by slightly depressing the brake pedal. The vehicle was taken to the dealer where it was diagnosed that there was an internal malfunction of the brake booster and the brake booster assembly pump. The vehicle was not repaired. The contact contacted the manufacturer and inquired about assistance with repairing the vehicle under an unknown customer satisfaction program. The manufacturer informed the contact that the failure was not a safety issue and they could not assist as the customer satisfaction program had already expired. The failure mileage was approximately 90,000.

- Los Angeles, CA, USA

Braking over uneven road surface cause loss in braking force. This only occurs while braking over uneven road surface. Very close calls.

- Jackson, NJ, USA

While stepping firmly on the brake and shifting into reverse, the vehicle moved approximately 18 inches backwards then stopped suddenly. This has occurred on at least three separate occasions, although usually when starting the vehicle. This time I paid close attention to the position of my foot on the brake. It was firmly pressed, but traveled only 1-2 inches. After the vehicle stopped and I was satisfied that I hadn't made a mistake I released the brake and reapplied it. This time it traveled the normal 3-4 inches. Each time I have the car serviced at the dealer I mention this to the technician. They reply that they've heard of that happening, but offer no solution.

- Palmdale, CA, USA

I have a 2011 Prius and if while I am braking, I drive over a bump in the road, the brakes release. I must re-apply the brakes to re-engage them. I feel this is very dangerous. There are numerous website references to this problem. When will a recall happen before someone has a serious accident?

- West Babylon, NY, USA