Brake Master Cylinder Problems of Toyota Tundra

The contact owns a 2000 Toyota Tundra. The contact stated while driving approximately 15 mph, he depressed the brake pedal, but the vehicle failed to engage. As a result, the contact crashed into a small tree that caused a dent in the front bumper. No injuries sustained. No medical attention was required. A police report was not filed. The vehicle was towed to the contact’s residence. The contact stated that upon inspecting the vehicle he noticed that the two lines in the master cylinder was missing the divider. The contact stated that he replaced the brake line, but the failure recurred. Additionally, the contact stated that on two separate occasions while making a left turn, the contact lost control of the steering wheel. The contact stated that upon inspecting the vehicle, he noticed that the ball joints had snapped and failed. No warning lights illuminated. The vehicle was not diagnosed or repaired. The dealer nor the manufacturer was notified of the failure. The failure mileage was approximately 270,000.

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When we drive the truck, when you press the brakes they often go all the way to the floor. Driving while on city streets as well as on the freeways. You have to pump them in order just to stop before hitting anyone. After driving 30 miles, we have to refill the master cylinder with brake fluid. We have taken it to the mechanic three times for them to find no leak. A friend looked at it and found that the master cylinder is leaking into the brake booster. We do not feel safe driving this vehicle in this condition. I have an article from fox news stating that our year 2004 Toyota Tundra is included, but when I called the dealer as well as entered it into your system, they state it is not. This is a dangerous condition and I strongly feel that our vehicle should be included in the recall. We have a new driver driving and will not let her drive this truck in this condition. We would feel much safer if this could be repaired. We have be fortunate to not have had an accident, but we have had many close calls, and the leak seems to be happening more and more often.

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Total loss of braking system. Pedal went to the floor when leaving a store parking lot. Was able to stop vehicle by using emergency brake. Noticed a ruptured solid brake line under drivers side running towards rear of vehicle. All brake fluid was gone from master cylinder when checked. Also noted a lot of corrosion on frame, brake lines, and other parts of undercarriage. Frame was previously coated as part of recall several years ago. Vehicle was towed to Toyota dealership in winston-salem, nc. Had to have two solid brake lines replaced along with rear brake shoes and drums. Could have been killed or seriously injured if this happened at speed or in heavy traffic.

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Brake pedal suddenly turned soft and goes all the way down before it starts to grab. Put in new pads all around, new master cylinder and had system completely bled, problem still there. Checked out Toyota Tundra forums and this seems to be a problem on these trucks, only has 63,000 miles. Everyone says that it is an abs module problem costing over $2000. 00 to fix.

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Master cylinder leaking somewhere. No fluid on the ground so it's internal?.

While driving the truck the brake pedal sink to the floor nearly causing an accident. I bought the truck last year and it started after the last service by a Toyota dealership. The same thing happend to my wife while driving the teuck with my kids. It happens unexpectedly losing brake pedal resistance causing brakes to skin to the floor with minimum to no braking power. This was reported to the service agent who was able replicate the issue; howere, red mccombs Toyota of san antonio TX wanted to charge me $1500+ to replace the brake master cylinder. That was pretty high for just that. I was told the labor was very expensive. I told him I couldn't do it and that I may have to take it somewhere else and I was simply told to be careful driving it. I am having midas replace the brake madter cylinder. I did my reseach and found various Toyota Tundra online community forums and a lot of customers have experienced the same thing. Some with as low as 30k miles. I had arounf 89k, but a master cylinder shoild hold up to at least 125k miles. I contac Toyota corporate and the contacted me ack ver quick but did not had the time to disccuss as I was driving. I feelthere needs to be a oossible recall.

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While driving to work one morning, my brake pedal went directly to the floor with almost no stopping capability. After finally getting the vehicle to stop, the pedal felt normal. The next day a similar situation occurred. Since the occurrences were inconsistent in timing, situation and driving conditions, it was not easy to replicate. Upon taking it to a local dealership, they had the same difficulty causing it to happen. Although, on their "last" try, it went to the floor. Local dealership could not diagnose the specific issue and called in an engineer from Toyota. Ultimately, since they could not isolate one specific failure, they decided that the *main components of brake system should be replaced. *main components include master cylinder, brake booster and abs actuator. As the service technician indicated that they had seen several of these, I began a case with Toyota motors USA to try and get a clear understanding whether they thought this to be an issue. After all, this vehicle is marketed as having one of the most robust brake systems in its class. Toyota motors USA indicated in emails that they had no interest in reviewing and told me that as the customer, I had every right to choose another brand if I disagreed with their position. Since brakes are an essential safety system in a vehicle, it should be a primary concern to them in order to evaluate potential failures where the outcome could be far worse.

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I pulled my truck out of the garage (it was backed in) and when I approached the street applied the brakes. The brake pedal went to the floor and the truck barely stopped before entering the street. (driveway was luckily on flat terrain) I checked the brake reservoir and it was almost empty. Filled up reservoir, pumped brakes to get stiff pedal and checked for leaks. Could find none so drove truck on about 5 mile roundtrip. Pulled truck out the next day and reservoir was again empty but could find no fluid on concrete in garage. Filled reservoir & brought to my mechanic. He found that the booster pump was leaking into the master cylinder which was why there was not fluid on the concrete. He had to replace the entire unit since Toyota does not sell the components separately. This could have been disasterous under different circumstances. The brakes had worked perfectly fine the previous time the truck was driven. In fact it was driven over 250 miles on a hunting trip through roads that ran along cliffs. If the brakes had suddenly failed just 4 days earlier, someone could have died.

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Brake fluid low-Toyota service center said master cylinder was leaking onto vacuum pack thus both had to be replaced, an extremely expensive repair that should not be necessary on a low-mileage vehicle.

2010 Toyota Tundra crewmax, current mileage 16,752. For the last month or so while the vehicle is stopped, waiting for a light etc. With my foot on the brake pedal, the pedal will slowly go all the way down to the mat. The vehicle still remains braked, even when the pedal is all the way down. Release of the pedal and immediate reapplication of the brakes results in an initial normal pedal, followed by the pedal slowly going to the floor. When the engine is off and the brake pedal depressed, no matter how much force is applied, the brake pedal does not sink to the floor. So far this does not appear to have had any adverse effect on the normal braking. Took the truck in to the dealer, they test drove it, said they had it happen, but that Toyota brakes were different and that they had another Tundra in the shop which did the same thing. They also said that another Tundra owner had complained of the same issue and the Toyota rep had checked it out and declared it normal. They then told me there was a 2nd recall on the accelerator pedal and requested that they perform it. I agreed. Left the dealership with the paperwork stating "no problem found". I would assume it would be normal if the brake pedal went to the floor from day one, it didn't. I would presume the brake master cylinder is fine as the pedal is solid with the engine off. Maybe a seal leak within the abs block? no apparent brake fluid loss, the reservoir has not dropped.

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Everytime I came to a stop light or sign, the brakes would lose pressure and then the car starts going through the light, while I am still holding the brakes. The would also lose pressure to where I could not stop in the middle of a hot day. Problem was consistent first thing in the morning on the way to work. Took it to Toyota dealer and they could not figure it out at first. They had me replace the brake pads, and rotors and bleed the lines numerous times. This still did not work and they said I needed a new master cylinder/brake booster. This assembly is all in one so the whole unit had to be replaced costing over $2,000 for the parts not including labor. The truck is a 2005 Toyota Tundra with only 60,500. They told me I was out of warranty and had to pay the cost because they have never heard of this failure before.

Consumer states brake pedal feels spongy and there is extended braking distance. Dealer determined the master cylinder fluid heats up and causes the brake shoes and drums to warp. Front and rear shoes and drums have been replaced 3 times. Dealer also replaced the rear axle and bearings, were affected by this braking problem. Ts.

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Serious vibration, soft brake pedal and limited travel. This vehicle has exhibited brake problems since new. It was returned to the dealer which replaced the master cylinder under warranty. The problems continued to which the dealer insisted the symptoms were normal. Later, they said it needed another master cylinder but I declined based on previous experience. Vibration was attributed to tires. I have been chasing vibration and soft brakes for the life of the vehicle.