2008 Toyota Prius Brakes Problems

2008 Toyota Prius gen2 with 139k miles. ABS, Brake, parking brake, and Traction Control lights all illuminated while driving the other day. Potential is losing all electronically assisted braking function in the car. Problem has been confirmed by local independent service center. Independent service center pulled codes: C1256 Accumulator low pressure C1378 Capacitor Communication Malfunction C1391 Abnormal leak of ACC pressure all consistent with ABS accumulator failure. Recommending ABS modulator assembly replacement at $2742.66 Toyota had a warranty enhancement program that covered this component: Warranty Enhancement Program – ZG1 2006-2007 Model Year Highlander Hybrid & 2004-2009 Model Year Prius Vehicles Extension of Warranty Coverage for Brake Actuator Assembly This Warranty Enhancement Program provides enhanced coverage to the vehicle’s “New Vehicle Limited Warranty” as it applies to the Brake Actuator Assembly. The specific condition covered by this program are repairs related to an internal malfunction of the Brake Actuator Assembly. If the condition is verified, the vehicle will be repaired with a new Brake Actuator Assembly at no charge under the terms of this Warranty Enhancement Program. • The Primary Coverage offers warranty enhancement until December 31, 2017, regardless of mileage. • After the Primary Coverage end, the Secondary Coverage is applicable for 10 years from the date of first use, or 150,000 miles, whichever occurs first

NHTSA ID

11725225

Incident

Feb 27, 2026

Brake pedal became hard and vehicle was difficult to stop. ABS warning light appeared on dashboard. This is a problem that Toyota has addressed previously by extending the warranty period to 10 Years/150,000 miles. My vehicle has 122,000 miles on it but the 10 year extended warranty has expired. I took the vehicle to a local repair shop and they confirmed that there was a problem with the brake actuator assembly. Now, Toyota says it would cost over $3000 to remove and replace their already defective part.

NHTSA ID

11714800

Incident

Jan 30, 2026

The ABS brake booster/accumulator is going out and this has been a known issue with Toyota for years. Mine was purchased used a few years ago and had no issues until recently, as the pump is running more frequently.

NHTSA ID

11689871

Incident

Jul 1, 2025

ABS failed and mechanic tells me my actuator needs replacement which is a known issue with my generation of Prius.

NHTSA ID

11681125

Incident

Aug 13, 2025

My name is [XXX] ,i am filing this report on behalf of My daughter [XXX] the driver of the vehicle that involved with the unintended acceleration on the 2009 Toyota Prius .On a good clear morning on [XXX] . My daughter drove the 2009 Toyota Prius to work- when she enter to the parking lot at the speed round 5 mile/hour . Just when she was making a left turn on to the entrance gate with her left foot on the brake pedal . On a sudden the vehicle RPM unintended rev up too high and the vehicle had an unintended accelerating to move forward aggressively causing lose control of the steering . Also she could not brake even though her left foot was on the brake pedal and pressing hard to try to stop the vehicle . . This dangerous incident causing her Prius to bumped into the electrical gate panel control box . The accident caused some damages to her Prius and to the entrance gate control box though no body was hurt . But it got us through the terrible experience because it could kill some one for sure . My daughter been driving this commute car daily in the past 5 years and she has the skill of 20 year driving with good record . This Prius of her still have all OEM equipments with no add- on parts-,no modifying part on any systems what so ever- and NO extra floor mat cause we been warned before about the possible of unintended acceleration causing by aftermarket floor mat to any vehicles. . We feel unsafe after the mystery accelerating problem on Toyota Vehicle that could take people lives . So the mystery unintended accelerating on car is REAL . I am currently checked and find out her Prius has 2 incomplete recalls (un-notice to us ) but none of them related to the unintended acceleration problem . We would like the NHTSA to take this problem seriously to save people life . I will included photos of this incidents and willing to provide all information if needed to address this problem, again to save lives . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 5

NHTSA ID

11670935

Incident

Jun 30, 2025

Incident Summary: While relocating from northern to southern Alabama, I experienced a sudden and concerning failure in the vehicle’s braking system. While driving, multiple dashboard warning indicators were triggered simultaneously, including: •Brake warning light •ABS light •VSC (Vehicle Stability Control) light •Additional system fault alerts This happened unexpectedly and severely impacted my ability to drive the vehicle safely. Given the nature of these warnings and the critical systems they pertain to, I immediately took the vehicle to a certified Toyota dealership for diagnostics and repair. Following inspection, I was informed that the ABS actuator and related components had failed and would require replacement at an estimated cost of nearly $3,000. I was further advised that while this issue had been part of a previous recall or customer support program, that program is no longer active. Rationale for Cost Coverage Request: 1) Known Safety Issue: This ABS/VSC failure aligns with prior technical service bulletins and recall actions issued by Toyota for Prius models of this era. The abrupt system failure while driving raises significant safety concerns. 2) Purchased from Certified Dealership: The vehicle was purchased from an authorized Toyota dealership. I trusted that all known recall issues would have been properly addressed prior to sale. 3) Recall Program Timing & Fairness: The original recall or warranty enhancement was tied to a timeframe or mileage limit, but given that this issue has not been resolved and is now manifesting as a serious failure, I believe an exception should be made—especially since it was known to affect vehicles like mine. 4) Customer Loyalty and Safety Assurance: I have maintained this vehicle responsibly and expect Toyota, as a brand committed to quality and safety, to assist with this issue in good faith. Request: I respectfully request that Toyota cover the full cost of diagnosing and repairing the ABS system issue.

NHTSA ID

11668556

Incident

Mar 1, 2025

I recently took my vehicle to the dealership because all the hazard lights on the dash came on. They diagnosed it as an issue with the inverter water pump and suggested that the engine was overheating, which was causing the hazard light to appear on the dashboard. So I had them replace that part and everything was fine. A week later, I went to drive to work and my entire dashboard was out. My radio, clock, blinkers, and brakes worked, but I could not see the speedometer, gas gauge, odometer or any other dashboard features. When I tried to restart the car, it wouldn't turn off. I tried several times and even got my husband to try. When we couldn't turn it off, I drove blindly straight to the dealership. They diagnosed the issue as being a problem with the combination meter. Recently, I found out that there was a Customer Support Program through Toyota that replaced the combination meter in my same car model. This service expired in 2017. I got the car in 2020-21. Thankfully I was home, and was able to follow my husband to the dealership. I'm not sure what I would've done if this happened while I was out. I am also have traction issues with the brakes. When I try to brake on a slope or incline, the glide hazard lights come on. It's happened several times when it's raining, but it's been happening more when it's not. I typically give enough space between myself and the car in front of me, but it's concerning that the brakes lock up when I'm on any type of sloped surface.

NHTSA ID

11665147

Incident

Jun 4, 2025

Brake actuator fails. Subject to prior recalls, but they're continuing to be an issue. This vehicle, and thousands of others like it, the electric brake actuator/pump starts running constantly then fails entirely. When that happens, as has to mine, the vehicle has NO power brakes, which can and does cause the vehicle to crash. The replacement part is over a thousand dollars. Toyota has engineered a failure mode that creates massive continuing profits.

NHTSA ID

11648237

Incident

Mar 7, 2025

The error lights related to the ABS, VSC braking system can suddenly come on, the antilock brakes stop working, and breaking power is greatly diminished. This occurs without warning and when it does, the brakes do not work safely and it is more difficult to bring the car to a stop. I have taken the car in to repair shops who have confirmed the issue. This malfunction produces error code C1256 and multiple mechanics have confirmed it is related to a faulty ABS Actuator Assembly and recommend immediate replacement of the unit. This is a common and known issue with these cars. I have been quoted a range of $2,100+tax to $2950+tax to perform the repair using a brand new part from Toyota.

NHTSA ID

11644952

Incident

Feb 11, 2025

brake actuator assembly failed

NHTSA ID

11637121

Incident

Jan 3, 2025

Loud grinding noise coming from engine compartment accompanied by a loud shrill alert. When attempting to pull over to a safe place, I put my foot on the brake pedal, but immediately became distressed because it felt like I had no brakes at all. After applying extreme pressure to the brake pedal, the car did begin to slow down, albeit very slowly. I had 2 passengers in the car (ages [XXX] and [XXX] ) and I felt their lives were in jeopardy. Upon researching, I found that Toyota has known about this ABS problem for quite awhile (at one point, they even extended the warranty on the faulty parts). With the gravity of losing the ability to brake while driving, reasonable people would conclude that a recall is in order. It does not matter if it is voluntary by Toyota or mandatory by the appropriate government entities. I, literally, feared for my life and the lives of my passengers. I am grateful it didn't happen while traveling at highway speeds because the outcome could have been much much worse. I sincerely hope that my government who is in charge of protecting it's citizens against known automobile dangers, will take the necessary steps to initiate a recall for all Toyota vehicles that have this serious ABS problem. My fear is that those decisions are made by algorithms and actuarial data rather than by reasonable common sense. I certainly hope there isn't an arbitrary number of deaths before a recall is made. What if one of your family died as a result of purposeful inaction. The diagnostic codes for my Toyota are C1256 and C1391. These both point to serious problems with the ABS system ( actuator, accumulater etc.). Please consider investigating this common and life threatening problem. Thank you INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11619772

Incident

Oct 4, 2024

Brake actuator failing just like everybody else

NHTSA ID

11618641

Incident

Oct 8, 2024

I have a 2008 Toyota Prius (172k miles). From the sounds coming from the ABS Brake actuator and soft breaks, it is clear from my research online that I will soon have a failing ABS brake actuator. I have the code C1256 thrown which is ABS "Accumulator Low Pressure" Read more: [XXX] I do not feel safe driving it as it is clear one day the brakes will suddenly go out on it. This needs repaired. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11614339

Incident

Sep 12, 2024

Brake failure while driving. No warnings prior to failure. ABS Module 4450047141

NHTSA ID

11604837

Incident

May 31, 2024

Brake ABS and front brakes have completely failed because a software error where the and cannot be calibrated and terminates during calibration. The car only has rear brakes which frequently lock of and cause a safety issue. Front brakes completely disabled due to a software calibration issue

NHTSA ID

11600249

Incident

Jul 8, 2024

My abs actuator has failed at 104k miles

NHTSA ID

11589993

Incident

May 1, 2024

The ABS Actuator failed. It can be inspected. This is dangerous as this has the possibility of causing a brake failure. A retired mechanic plugged in his scan tool and determined that the ABS actuator is leaking. In addition, I can tell audibly that this is the case because the car's pump is starting up every 10-15 seconds trying to fill the air reservoir but is unable to due to the leak. Neither the vehicle nor the component has been inspected by the manufacturer, police, insurance representatives, or others. The brake and ABS lights are lit up on the dashboard. The car's pump is starting up every 10-15 seconds trying to fill the air reservoir but is unable to due to the leak.

NHTSA ID

11589556

Incident

May 2, 2024

Brake Actuator Failure

NHTSA ID

11577802

Incident

Mar 15, 2024

The electronic brake actuator failed while driving causing the loss of brakes. Didn't cause accident but still very dangerous situation. Mechanic pulled odb code c1256 from vehicle and says not to drive until it is repaired.

NHTSA ID

11577384

Incident

Mar 13, 2024

The contact owns a 2008 Toyota Prius. The contact stated that while driving approximately 15 MPH, the brakes failed when pressed causing the vehicle to crash into the rear end of a second vehicle. During the crash, the air bags did not deploy and the rear driver-side seat belt had sprung outward, although no rear seat passenger was present. The second vehicle's rear driver's side passenger was later treated for an undisclosed injury. A police report was taken at the scene and the vehicle was towed away. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure. The failure mileage was 240,000.

NHTSA ID

11574057

Incident

Jun 6, 2023

Mileage

240,000 mi

I was shocked to find out that Toyota appears to be falsifying data in order to get out of paying to repair safety problems with their cars. Hiding safety issues may have already led to injuries and death. We bought a 2008 Toyota Prius in 2014. The title with Virginia DMV is dated 08/01/14. On November 4, 2023, after several indicator lights showed up, I found out from my garage that the car's anti-lock braking system was defective and not working. However, according to the garage manager, Toyota had acknowledged a defect with their anti-lock braking system. There had been a recall some years ago for this part on the 2008 Prius, but it was no longer in effect. On November 6, 2023, Brittany at Toyota told me the same thing. Toyota acknowledged in 2016 that there was a problem with the anti-lock braking system with this model of car, and that it would be replaced for free by Toyota. This was a "customer support program" rather than a recall. However, according to Brittany, the notice of this "customer support program" was not mailed to us. It was mailed to the previous owner, who owned it before 2014. We never received it. Of course, the dates do not work. We bought the car in 2014, and the notice went out in 2016. There was no reason to send the notice to someone who didn't own the car. Brittany, pretty innocently, had revealed that Toyota is falsifying records. She said that Toyota is using state DMV records to find car owners and send notices of faulty and dangerous parts. However, this is obviously not true. Virginia DMV issued our title to the car on 08/01/14, well before the recall. The only way I can see this happening is if Toyota is falsifying records so that they have to pay to fix far fewer cars. This practice could easily lead to injury and death. There would appear to be a notification mailing, with a postage bill to prove it, but it could have been at least partly fabricated by using past owners instead of current owners. If Toyota had not falsi

NHTSA ID

11554190

Incident

Nov 4, 2023

Yes it is available for inspection upon request. My brakes failed going down the road due to a flaw in brake actuator design that had a previous recall. My safety was put at risk as the brakes failed while I was traveling down the road. The problem has not gone away and can be easily reproduced. There are various warning lamps and the car is unable to be driven. Requests for Toyota to repair the vehicle have been fruitless. This is a KNOWN issue on this year and model.

NHTSA ID

11548427

Incident

Sep 20, 2023

The contact owns a 2008 Toyota Prius. The contact stated while driving at approximately 65 MPH, the messages for the parking brake, tire pressure monitoring system, ABS, and VSC illuminated while driving. The vehicle was later driven to the local dealer who diagnosed that the brake actuator and brake pump were faulty and needed to be replaced. The failure was not yet repaired. The manufacturer was notified of the failure, but no assistance was provided. The contact was informed of the Manufacturer's Extended Warranty Coverage for the failure however, the warranty had expired. The failure mileage was 129,674.

NHTSA ID

11546918

Incident

Aug 31, 2023

Mileage

129,674 mi

Brake actuator is going bad, they had a recall on it and are refusing to fix it. Brakes are a lot harder to press.

NHTSA ID

11480316

Incident

Aug 18, 2022

The inverter water pump failed while I was driving 50mph, it caused the car to stop working and the brakes malfunctioned as well. When I tried to hit the brakes I had to hit them a lot harder and it still acted like it wasn’t going to stop. I was lucky enough that the light up ahead was still green and the cars in front of me started going forward.

NHTSA ID

11480313

Incident

Aug 17, 2022