19 of the
3,482 complaints about the 2010 Toyota Prius are about the
driver-assist systems — 1% of everything
reported for this model year.
Half of the failures with a mileage on record happened before
134,000 miles.
i have have 2 problems, both was recalls, but this one they say expired in 2021 when i bought the car and toyota dealer didnt tell me had recall so i could fix it before it expired. there is a class action lawsuit in the brake booster, master cyclinder actuator abs pump fialing loosing brakes making grrr noises leaking all brake fluid out continously dangerous to drive can cause bad accident wreck since i drive down the hwy alot and this is the only car i have to drive, i also have dc inverter module /sensor that is killing off 3 batteries now that i installed in 3 months, and toyota dealers wont fix unless it shows error but its a recall so since problen should fix this recall but wont pay for it to fix it even though it a recall right now that is not expired. im upset 3 dealers wont do it unless then charge me to do it. when toyotal mfg take it to any dealer and they will fix free but no one will do it. toyota mfg needs to make these dealers fix these 2 recalls on this car that can kill me and my passengers and anyone on the road that i could hit by not haivng controll brakes or the hybrid system shuttong completely down and could even kill a pedestrian with these 2 recalls that dealers wont fix but mfg said they need to everyone with these cars i see are having these same problems. need make the toyota mfg and dealers fix these free of charge before more people get killed injuried or cause more accidents ,
NHTSA complaint #11723750 — an unverified report by a vehicle owner.
Honolulu, HI
FORWARD COLLISION AVOIDANCE: WARNINGS
The brake and pre collision system suddenly fail without warning.
NHTSA complaint #11690902 — an unverified report by a vehicle owner.
While driving through the mountains, the ABS, Brake, and Slippery (traction control) warning lights all suddenly illuminated on the dashboard. This happened without any noticeable trigger, and the warning lights remained on for the duration of the drive. I'm concerned about potential issues with the braking or stability systems and request a diagnostic check to ensure everything is functioning properly. Also I am aware that there was recall on Prius 2010 related to ABS system. My VIN was not included in that but seems like similar issue
NHTSA complaint #11654656 — an unverified report by a vehicle owner.
My ABS system light is on. The Toyota mechanic has determined that it is due to Nitrogen gas from a component of the brake booster pump assembly could leak into the brake fluid. As nitrogen is released into the brake fluid, the brake pedal may have reduced hydraulic pressure. Under certain circumstances, this condition could affect stopping distance and increase the risk of a crash. Toyota recalled model year 2010 Prius vehicles manufactured March 31, 2009, through October 9, 2009. I took my Prius to Toyota to fix this ABS recall problems but they are refusing to fix the problem for free. They are charging me $4000 to fix it.
NHTSA complaint #11652694 — an unverified report by a vehicle owner.
I am writing to express my concern regarding an issue with the PCS System dash lights on my 2010 Toyota Prius. I recently became aware of problems related to the brake booster system, which I understand have been addressed through recalls or warranty extensions on certain models. I believe that the issue I am experiencing should be covered under warranty, and I kindly request your assistance in resolving this matter.
NHTSA complaint #11648229 — an unverified report by a vehicle owner.
Twice while I was driving on the highway, my ABS and brake light came on, and my brakes became less sensitive to pressure. That is to say, it took more effort and I had to push my brakes further towards the floor in order for them to respond. I went to an independent mechanic and got the code C1391 which indicates a brake pump accumulator issue. I went to a Toyota dealership and and had the car inspected. They confirmed the C1391 code and said the brake booster assy with master cylinder pump assy was malfunctioning. However, I was never told by Toyota that this issue meant my brakes could fail at any time. My safety and the safety of others was put at risk because my brakes spontaneously became less responsive, my stopping distance was increased, and they were at risk of spontaneous failure.
NHTSA complaint #11636126 — an unverified report by a vehicle owner.
NHTSA CAMPAIGN ID: 13V235000 Toyota will notify owners, and dealers will replace the affected brake booster pump assemblies. The recall is expected to begin late July 2013. Owners may contact Toyota at 1-800-331-4331. Toyota is no longer honoring this recall. They think it is acceptable for me to drive around with unsafe and defective brakes.
NHTSA complaint #11615643 — an unverified report by a vehicle owner.
The ABS Pump( Accumulator and booster) are regularly failing on all Toyota Prius( 2010-2015). When the ABS pump starts to fail, the warning lights for Traction control, Brake and ABS come on. These lights come on at all speeds and its very hard to bring the vehicle to a complete stop when this happens. The brakes completely stop working and the brakes become rock solid. The brakes become so hard that they can’t be possibly be depressed to stop in time. I nearly missed getting killed from this as I am out of country and Toyota is refusing to fix it since its not a recall and I am in Canada. Toyota is asking $3500 in parts and $1500 in labor to repair. I can not afford it and this issue is on all Prius from 2010-2015. This is a major safety hazard and can cause serious injury and damage. Toyota is refusing to repair it since they believe the cars are out of warranty. However Toyota has been notified about this safety hazard arising on all Prius(2010-2015) but decline to respond or take action. I urge NHTSA to take action and get this resolved as the ABS brakes failing on the Prius can be really dangerous and can cause life threatening accidents.
NHTSA complaint #11609288 — an unverified report by a vehicle owner.
Altoona, FL
FORWARD COLLISION AVOIDANCE: WARNINGS
A warranty extension went out a few years back that said one might receive a "CHECK PCS SYSTEM" warning on the dash. This has happened to us, along with 7 other lights on the dash. Between the brakes being much less responsive, and all of the pre-crash warning / adaptive cruise / radar features being disabled, this could have caused an accident. The dealer checked out the car and states that the brake actuator has a leak and that it will be a costly repair - no less than $3000. This suspiciously all happened *just* outside of the warranty window (we are within the allowed number of miles but just out of time), and also suspiciously after Toyota released an upgraded version of the actuator, and *also* after a bunch of people are experiencing the same failure. Our best assessment at this time is that the brake actuators have a factory defect and that a recall should be done.
NHTSA complaint #11575839 — an unverified report by a vehicle owner.
The break booster started making a noise and my car should have fallen into the range of the previous recall for the exact part. I cant afford to change it so I continue to drive it and all of sudden the breaks are so hard to push and a constant buzz is going off! Autozone confirmed it was the break booster ans abs then a private shop did also
NHTSA complaint #11528769 — an unverified report by a vehicle owner.
My Prius 2010 has thrown the ABS, Traction, and Brake HUD lights all together. I took it to an Autozone and scanned the code to get the C1391: Abnormal Leak of ACC PRESS error. Many Prius 2010 have this issue, I'm sure I'll need to replace the actuator and/or accumulator and I know that will cost a good bit, i hope Toyota could help us fix it.
NHTSA complaint #11520320 — an unverified report by a vehicle owner.
Charlottesville, VA
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
Nothing wrong with it
NHTSA complaint #11512163 — an unverified report by a vehicle owner.
Brake, ABS and traction control warning lights went on when I was driving. I was able to brake but it was not functioning at 100%. The local mechanic was able to scan the code to get the C1391: Abnormal Leak of ACC PRESS error. The warning lights remain when I drive or parked. I no longer feel safe driving my vehicle. I plan to take my car to the Toyota dealer for further diagnosis and repair. I was informed that this is a very costly repair.
NHTSA complaint #11486381 — an unverified report by a vehicle owner.
The brakes ABS stopped working. It is a known issue and is effecting many older Prius drivers.
NHTSA complaint #11471002 — an unverified report by a vehicle owner.
Bakersfield, CA
FORWARD COLLISION AVOIDANCE: WARNINGS
My brakes have been making hissing noises whenever I press on the brake pedal for the past year. While driving on the freeway 300 miles from my home, numerous lights on my dashboard came on including brake, VSC, PCS, ABS, Triangle and "CHECK PCS SYSTEM" warning message. The brake also makes pumping noise every 4 seconds. The vehicle has no regenerative braking. The brake pedal is mushy and doesn't slow the car down until the pedal is fully depressed. I contacted Toyota and was told that there was a Customer Support Program ZJB that covers 2010-2015 Prius Vehicles for Brake Booster and Brake Booster Pump Assemblies. However, that program only covers 10 yrs 150 miles. My Prius has 110k miles but it's 21 months passed the program coverage. The car is dangerous to drive and Toyota will not honor the recall. I am stuck with a car with no brakes.
NHTSA complaint #11461709 — an unverified report by a vehicle owner.
The Brake Booster assembly for nearly all 2010 Toyota Prius has innate failure over time. It is a faulty, known-issue part. Toyota offered some limited-time warranty extension fixes instead of a full recall. My Toyota dealership informed my that my part needs the fix, as would be expected, but that I am not within the limited warranty. As this is a safety issue and the part has given out, I am stuck. I contacted Toyota directly and via email as well and they refused to do anything while acknowledging the part was their fault. They were very snooty about the fact that a full recall had not happened yet, and gleeful to deny me service.
NHTSA complaint #11434247 — an unverified report by a vehicle owner.
I TRAVEL TO WORK ONE HOUR AWAY FROM HOME, ON HIGH SPEED HIGHWAY'S MY BREAK SYSTEM LIGHTS TURNED ON, TRACTION, ABS AND BREAK, BREAK PEDAL SINKS AND WILL NOT BREAK AND IS VERY DANGEROUS WHEN DRIVING HOME. I HOPE NO ONE GETS KILLED
NHTSA complaint #11385667 — an unverified report by a vehicle owner.
Panama City, FL
BACK OVER PREVENTION:WARNINGS:EXTERNAL/PEDESTRIAN ALERT
NARRATIVE DESCRIPTION. NOT A FAILURE BUT A SAFETY PREVENTION MEASURE 2010 TOYOTA PRIUS 1. EVENT: WHEN BACKING UP THE VEHICLE RUNS ON BATTERY POWER-HENCE IT IS SILENT WHEN BACKING UP. THE VEHICLE IN BUSY PARKING LOTS (WALMART) GOES UNNOTICED. 2. FAILURE: I HAVE SURPRISED PEOPLE WHO ARE DISTRACTED AND DON'T NOTICE ME UNTIL THEY NEARLY WALK INTO THE SIDE OF THE VEHICLE. THEY DON'T HEAR THE CAR. 3. FAILURE CORRECTION: A BACK-UP WARNING DEVICE SHOULD BE INSTALLED TO ALERT PEDESTRIANS (BLIND FOLKS, NEIGHBORHOOD KIDS, PETS, ETC) OF A SILENT, BACKWARD MOVING VEHICLE APPROACHING. THERE IS SEVERAL BLIND SPOTS INHERENT TO THE PRIUS WHEN BACKING. HELPING OTHERS TO NOTICE YOU SEEMS LIKE "AN OUNCE OF PROTECTION THAT IS A POUND OF CURE" THAT IS MEASURED IN A SAVED LIFE OR CRIPPLING INJURY.
NHTSA complaint #10294015 — an unverified report by a vehicle owner.