My brakes recently stopped working as they normally do (you had to press extremely hard on the pedal to get it to stop) and several lights came on the dashboard. Prior to this the car was making a very strange noise when you start to push on the brakes. Not like a typical squeaky brake sound. I took it to Toyota and they gave me a quote for $3,700 stating that I needed a new brake cylinder assembly. I discovered a recall for 2010 Prius for the exact diagnostic code and they said my Prius was not covered by the recall. When you "reboot" the computer on the Prius, the lights and brake problem go away. This appears to be a significant problem with the 2010 Prius from what I have read on-line and Toyota is not acknowledging it. It's also a very costly repair that seems to be easily fixed when you reboot the computer on the car. What is going on" how many people are paying Toyota for this fix that appears to be a wide problem with the vehicle that should not be happening"

- Reno, NV, USA

The contact owns a 2010 Toyota Prius. While driving 20 mph, several warning indicators illuminated. The vehicle was taken to an independent mechanic and was informed that there was a recall for similar vehicles per NHTSA campaign number: 13V235000 (service brakes). Deluca Toyota (1719 sw college rd, hwy 200, ocala, fl 34471, (352) 732-0770) was contacted and stated that the vehicle was not included in the recall. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 166,000.

- Beverly Hills, FL, USA

After regular check-ups and maintenance at 90000 miles and 8 years of driving, all of a sudden three brake lights came on, the ABS, hand brake, and skid control lights all came on. At this time the braking issues seem to be less responsive braking and slight jerking when putting constant pressure on the brakes at low speeds. When brought to the Toyota dealership, they noted that there are no issues, however the master brake cylinder is likely to fail soon.

- Oldsmar, FL, USA

I took my Prius to the dealer because the brake light was on, to resolve the problem they replaced my master cylinder and booster on my 2010 Prius. I asked about a recall for the parts. I was told no recalls, I found that there is a recall for 2010 Prius. T-cp-dom date of issue July 1, 2013. The recall is for the same problem I had

- West Covina, CA, USA

The traction light, the ABS light and the brake light appear on the dash. I have already paid the mechanic approximatly $1,500 for repairs and now I am told I need the ABS brake booster which costs an additional $2,546.26. This part has been recalled on other 2010 Toyota Prius models, but not mine. I cannot afford this fix, so I am driving my car as it is. Brake pedal acts differently each time I use the brakes.

- Florence, SC, USA

I was on the freeway in traffic, going 60 mph. There was road construction coming up ahead. I depressed the brake pedal and nothing happened. The car didn't slow down at all and I crashed into another vehicle. My car was manufactured when the 'voluntary safety recall' by Toyota was supposed to address this, but I received no notification, nor did thousand oaks Toyota, where I had the car serviced, communicate about it.

- Morro Bay, CA, USA

I've counted at least 30 brake booster/actuator complaints on this site year to date for the same issue on this model year car. Our issue is the same as everyone else. Just under 150K miles, brake, ABS and traction control lights came on my daughter's car (we are original owners) as she was driving home from work. Non responsive brakes, only rear brakes engage if you push the pedal to the floor of the car. Took to dealer who diagnosed dtc C1391, accumulator leak malfunction. Our car was not included in original warranty enhancement (manufacture date of 1/2010), so price quoted was $4814.66. Our daughter cannot afford, so we called Toyota warranty who offered us $2007 as a measure of good will, but no more. This is a serious safety issue, beyond ridiculous that some cars with the same defect had the warranty enhancement program available which paid for the entire repair, yet most others like us were denied the fix and are facing astronomical repair bills that many cannot afford, nor anticipate on a car such as a Toyota. The brakes failed while my 22 year old daughter was driving - that could have gone so very wrong.

- Land O Lakes, FL, USA

While driving on a bumpy surface the brakes slip when applied. Stopping ability is reduced. This happens on a regular basis, on surface streets and highways. I have noticed it while stopping in a straight line, but it may also happen while stopping on a curve.

- Santa Monica, CA, USA

The contact owns a 2010 Toyota Prius. While driving approximately 30 mph and depressing the brake pedal to slow down the vehicle, the pedal became loose. As a result, the vehicle continued moving and the anti-skid, brake, and ABS warning indicators illuminated. The contact was able to bring the vehicle to a stop by depressing the brake pedal multiple times. The vehicle was taken to cavender Toyota (5730 northwest loop 410, san antonio, tx 78238, (210) 681-6601) where it was diagnosed that the power booster failed and needed to be replaced. The vehicle was not repaired due to the repair fees. The manufacturer was notified and informed the contact that the VIN was not included in any recalls; therefore, no further assistance was offered. The approximate failure mileage was 85,000.

- San Antonio, TX, USA

ABS, brake and traction control lights on. Code C1391 abnormal leak in accumulator.

- Miramar, FL, USA

C1391 - ABS system failed

- Derwood, MD, USA

Brake actuator has failed. Traction control, ABS, brake lights illuminated on dash. More effort needed to engage brakes. This affects the regenerative braking as it no longer charges on braking as it was designed. Checked Toyota website for recalls since this is safety related, and there are none. Which is quite disturbing. I've researched Prius forums and this seems to be an ongoing problem. Toyota issued a recall for the generation 2 model, however this seems to be a problem for generation 3 models as well. The problem did occur when on the highway traveling at 60 mph.

- South Houston, TX, USA

The contact owns a 2010 Toyota Prius. While the brake pedal was depressed, the vehicle delayed to stop and the brake warning indicator illuminated. The vehicle was taken to sheehy Toyota of fredericksburg (3507 jefferson davis hwy, fredericksburg, va 22408, (540) 507-0076) and was informed that the vehicle was not included in a recall. The vehicle was not diagnosed or repaired. The contact referenced NHTSA campaign number: 13V235000 (service brakes). The manufacturer was notified and the contact was advised to contact the dealer. The failure mileage was approximately 250,000.

- Partlow, VA, USA

Brake system has kept making air pushing sound but suddenly I cannot push the brake pedal at all. It feel like blocked. Braking force is not working

- Katy, TX, USA

Serious issue with the Prius. Brake actuator/brake booster fail. The braking is seriously compromised because of this problem. The dealership says it is known to Toyota, but they will not offer any assistance. When the brake/ABS/trac lights are reset the brakes function perfectly for a short period of time and then the lights/problem returns.

- Deland, FL, USA

The other day my brake light, traction, and ABS light came on. Took it to the mechanic and they said it's code C1391 - abnormal leak in the accumilator, electrical issue, and I must go to the dealer. I've seen others complain about this. Shouldn't this be a recall?

- Woodland Hills, CA, USA

Antilock brake actuator and pump failure. Quoted as a $4700 repair at dealer with labor. Parts are just over $3600. There were recalls on gen 2 Prius'and extended warranty on other Prius'. this car falls under no help at all. We are original owners and car had been essentially problem free. Disgusted that this dangerous and known problem isn't being properly addressed by Toyota. All lights on dash related to brakes lit up while driving. Still had brakes. Took to dealer to check problem.

- Merritt Island, FL, USA

I own a 2010 Toyota Prius iv. I concur with all that has been documented about ABS and braking issues with the Prius. Two weeks ago my brakes started to sqeal. I took it to a mechanic and was informed all was well (brake pads, fluids, oil). A week later the brake and ABS indicator came on in my vehicle. The braking distance is elongated as I have to pressed firmly on the brake for the car to stop. I took it to my mechanic who reset the car. I drove from the mechanic and all appeared to be fine until I hit a bump in the road. The indicators came back on immediately and the braking changed. I had to pressed the brake pedal all the way down in order for the car to start. The car always surges forward whenever I hit a pothole, bump or any rough surface. In hin sight, when I first bought the car I had a fender bender because the car lurched forward when I was parking. I am now discovering this issue is a knwon issued with Toyota; particularly the Prius. Fixing this problem seems to be expensive. Toyota should cover the cost via a recall.

- Brooklyn, NY, USA

A tire blew out on the highway, and afterwards the ABS light, brake light, and traction light came on. Apparently the brake acuator has failed completely.

- Melbourne, FL, USA

On a few occasions when the car is in motion, we have depressed the brakes and they did not grab right away. This happened once getting onto a highway, twice on a city street, and another time on a country road. There seems to be a small delay before they will grab, causing the car to feel out of control for that brief moment. It feels unsafe when this happens and doesn't seem normal. We contacted the service manager at Toyota to have the car looked at, and he did not return our call.

- Green Bay, WI, USA