Air Brake Abs Warning Light Problems of Toyota Prius

See attached letter.

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The contact owns a 2018 Toyota Prius. The contact stated that while in bumper-to-bumper traffic, the vehicle suddenly accelerated. The brake pedal was applied but failed to respond. The driver crashed into the front passenger side of the Lexus. The vehicle continuously moved forward. The contact was eventually able to pull over safely. The pre-collision malfunction warning light illuminated. The brake malfunction light was flashing. The air bags did not deploy. There was no reported fire or injury. A police report was filed. The vehicle was taken to the local dealer, who could not determine the failure. The vehicle was not diagnosed or repaired. The vehicle was then towed to an autobody center where it remained. The manufacturer was contacted, but no additional assistance was provided. The approximate failure mileage was 39,000.

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The contact owns a 2011 Toyota Prius. The contact stated that his vehicle's battery would frequently die out upon start of the vehicle without warning. The contact also stated that while driving at various speeds, the brake pedal would become stiff upon depression as several warning lights including the abs warning light would appear on the instrument panel. The vehicle was taken to a dealer where based off of the noise coming from the vehicle; the mechanic determined that the brake booster and brake booster assembly were defective. The manufacturer was notified of the issue. The vehicle had yet to be repaired. The failure mileage was approximately 2014,000.

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The contact owns a 2010 Toyota Prius. The contact stated that while driving 50–55 mph, the abs, traction control, and brake warning lights were illuminated. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The vehicle was taken to an independent mechanic, who informed him about the brake booster assembly being replaced.  the manufacturer was contacted, but no assistance was provided. The approximate failure mileage was 139,999.

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The contact owns a 2013 Toyota Prius plug-in-hybrid. The contact stated that upon coming to a complete stop, the abs warning light illuminated on the instrument panel. After the failure, the contact became aware that the brake pedal needed an excessive amount of force to be depressed while bringing the vehicle to a complete stop. The brake and traction control warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 140,000.

The contact owns a 2009 Toyota Prius. The contact stated while driving at approximately 65–70 mph, the abs warning light illuminated. The vehicle was taken to the local dealer, where it was diagnosed that the brake pump actuator needed to be replaced. The vehicle was not repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 236,425.

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The contact owns a 2010 Toyota Prius. The contact stated that while driving at an undisclosed speed, the abs and brake warning lights remained illuminated, and the brake pedal was firm while depressed. The contact stated that the vehicle failed to immediately stop while depressing the brake pedal, causing the stopping distance to be extended. The cause of the failure was not yet determined. The manufacturer and local dealer were not notified of the failure. The failure mileage was 120,000.

The contact owns a 2012 Toyota Prius. The contact stated that while driving at various speeds, the abs warning light illuminated and the vehicle skidded while depressing the brake pedal. The contact stated that the hazard lights independently activated and caused the battery to drain, and the vehicle would stall. The vehicle was taken to a dealer where the contact was informed that there was a customer satisfaction program for the failure, but the customer satisfaction program had expired. The manufacturer was notified of the failure but offered no assistance. The vehicle was not repaired. The failure mileage was approximately 120,000.

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The contact owns a 2012 Toyota Prius. The contact stated that while driving approximately 50 mph, the abs, braking and traction control warning indicator lights illuminated. The brakes became inoperable but the driver was able to gain control of the vehicle and pull over. The vehicle was taken to the local dealer where it was diagnosed there was a hydro pump motor fault and hydro motor pump relay fault with the codes c1252 and c1253 and the hydro boost brake pump kit and brake assembly needed to be replaced. The vehicle was not repaired. The manufacturer was contacted and referred him to NHTSA. The approximate failure mileage was 97,000.

The contact owns a 2012 Toyota Prius v. The contact stated while driving at 30 mph, the vehicle stalled inadvertently. Several unknown warning lights were illuminated. Additionally, the brake pedal was depressed but failed to respond. The contact veered to the side of the road and intentionally hit the curb in order to stop the vehicle. The vehicle failed to restart. The contact stated that the vehicle later restarted and was driven to the dealer. The dealer diagnosed that the abs actuator had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that they could not assist as an unknown Toyota courtesy program issued for the failure had expired. The failure mileage was approximately 160,000.

The contact owns a 2010 Toyota Prius. The contact stated while driving approximately 25 mph, the abs warning light illuminated. The contact stated that the braking system was not normal however, the vehicle was drivable. The contact drove the vehicle to an independent mechanic who provided the contact with a code for an abs fault. The vehicle was not repaired. The contact notified the manufacturer of the failure. The approximate failure mileage was 136,000.

The contact owns a 2012 Toyota Prius. The contact stated that while starting the vehicle, the abs, hybrid system, and traction control warning lights were illuminated. The dealer was made aware of the failure but informed the contact that the warranty was void due to a salvage title. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 102,000.

The contact owns a 2010 Toyota Prius. The contact stated while driving at various speeds, the brake pedal was depressed however, the vehicle failed to respond as needed; causing the stopping distance to be extended. The contact stated that the abs, brakes, and traction control warning lights were illuminated. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the abs system and brake booster needed to be replaced. The local dealer was contacted and the contact was informed that NHTSA campaign number: 10v039000 (service brakes, air) had expired. The manufacturer was notified of the failure but provided no assistance. The approximate failure mileage was 220,000.

The contact owns a 2010 Toyota Prius. The contact stated while exiting the highway and getting into the right lane at 60 mph, the abs warning light, brake light, and the traction control warning light illuminated and the vehicle lost braking functionality. The contact depressed the brake pedal with added force to get the vehicle to slow enough that he was able to get off of the highway ramp and pull over. The contact turned off and restarted the vehicle; however, the warning lights were still illuminated. The contact stated that extra force was needed to stop the vehicle. The contact drove the vehicle to his residence. The contact has not taken the vehicle to local dealer. The vehicle was not repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 182,000.

2010 Toyota Prius. Consumer writes in regrds to defective abs system. The consumer stated the dealer advised the brake accumulator. The consumer was informed about a recall but, it had been discontinued. The brake booster pump assembly was replaced at the owner's expense.

The contact owns a 2006 Toyota Prius. The contact stated while getting into the vehicle, there was a loud buzzing sound coming from the brakes. The contact stated that the brake, anti-slip regulation, abs, and vehicle stability control warning lights were illuminated on the instrument panel. The contact stated that the brake was inoperable. The vehicle was taken to an independent mechanic and diagnosed with an accumulator failure. The part was replaced; however, the failure recurred consistently. The manufacturer was not notified of the failure. The approximate failure mileage was 243,000.

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The contact owns a 2011 Toyota Prius. The contact stated that the abs warning light was illuminated on the instrument panel. The contact stated that he had to apply extra force to the brake pedal while attempting to stop the vehicle. The manufacturer was notified of the failure and informed him that the vehicle was under warranty; however, the warranty had expired. The contact insisted that he never received a notification about the warranty but was offered no assistance. The vehicle was not repaired. The failure mileage was approximately 75,000.

The contact owns a 2010 Toyota Prius. The contact stated that while driving at various speeds, the vehicle started to hesitate. The abs and traction control warning lights were illuminated. The contact stated that there was brake message displayed. During the failure the brake pedal had to be depressed twice before the vehicle responded. The vehicle was taken to the local service center who diagnosed that power brake booster and master cylinder needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure and informed the contact that the vehicle did not qualify for the extended warranty related to the failure. The local dealer was not yet contacted. The failure mileage was 135,000.