brake recall?

[JesseE]

Originally Posted by mhigham

Even if the caliper fell off and all the fluid leaked out, you would only lose HALF the fluid and half braking. The hydraulic system is a split system, so a leak in one part will never totally lose braking. Even half brakes on this car at 30MPH is enough to come to a brisk stop in a controlled manner.

I will bet the repair costs to that car that, given the black box data, speed was more than double the stated 30MPH. You cant argue with physics.

Pics?

Are you smoking crack..... don't talk if you don't know Everything you just said is 100% untrue.

[rice_classic]

Where does one go to buy "Mad brake fluid"? I've only been using DOT5.

All kidding aside,

These cars (I think it's a gov regulation) have opposite corner brake biasing like said above. If I'm driving a long and cut the brake line to my right rear caliper I will still have braking pressure in left rear and right front. The reason for this design is so that if I loss pressure in a brake line the car will still brake in a straight line.

Situation is suspect without more info and IMHO a lawsuit is a non-starter.

[wu_dot_com]

Originally Posted by travace

yea i missed that thread. Maybe because i was taught to drive in a RWD manual but even when i turn off all TCS(hold for 5 seconds) i have to really try to get the back wheels to break loose. I dont get how people are so out of control with this car stock... its not THAT powerful to the wheels.... ive drove little toyota trucks that got loose way easier.

i agreed. ive stared off on driving toyota pickup 91 basic model. that car was full of fun when driving in any condition. the rear is so light that even during a 20 mph turn the tire would squeek like if im taking the turn at 60.

[wu_dot_com]

Originally Posted by ric342

let me reiterate my story, 9:00 pm going back home chilling on snake way. decide to go home after hanging out for 2 hours, started the car an went on my way back to caynen. the first turn i was doing 27-29 mph. iv been down this road many times, the first turn was an easy turn the turn after that is really crazy and you have to hit the brakes if you go faster than 30. okay so i took the first turn and stared to put pressure on the brakes, it did not seem to slow down . so when i got to the second turn i hit them again and there was no response. This is all going down in seconds. so i hit the brakes one more time and they make the car veer sideways. at that point im facing a wall i turn the steering wheel all the way to the left and the tires shreek like a bat out of hell. the rear of the car hits the rock wall and continues down hill. i pull the E-brake and the car stops. I came out okay and the car was not so lucky, i bought this car on my own and i am proud to own it the issue now is if i can trust it, so to all the haters that think i was driving crazy or doing something i was not able to do, then the damage the car sustained should prove that i was not driving like a maniac, add that in fact that the car would be salvage title if i was doing anything wrong.im gong to stay optimistic and hope for the best,thank you to all who read this.

i can see how thing unravel.
lets look at the facts here.
1 of the rear brake is leaking.
1 of the rear brake sensor was malfunctioning.
you were driving on a canyon road which require turning as you were applieing brakes.
per your description here are my assumptions.
the malfunction rear brake sensor is on the leaking brake.
the malfunction was sending intermitting signals.
assuming your brake fluid is almost empty due to leakage.

here is how the thing unravel.
as you pass the first turn, you applied pressure to the brake pedal but did not see reduction in speed.
this can cause by reduction in the brake system back pressure caused by leakage. or the master cylinder can be sucking in air from the overflow reservoir.
as you approaching the second turn, you hit the brakes again. assuming that you have enough brake fluid in the line for the reaming 3 brakes to be effective, the faulty sensor in conjunction with ABS is giving one of the rear tire wrong pressure command thus breaks friction with road.
in a turning condition, rather than having balance lateral resistance with both tires, your car is now in a condition where the velocity vector is changing and you are over loading the remaining rear tire with additional torque due to our LSD.
now with your remaining rear tire lost traction, the ABS is compensating it by pumping the brakes which in turn sucking more air thus reducing overall braking efficiency.

then you hit the wall without any reduction in speed.

does this sound anywhere close to what you experienced?

[Dave-ROR]

Originally Posted by JesseE

Are you smoking crack..... don't talk if you don't know Everything you just said is 100% untrue.

Well he is partly right.. until all the fluid runs out. I was talking about the same basic thing when I mentioned it being by design, but he is wrong in thinking that you can continue to drive like that forever. The car runs a cross diag system with two circuits, but both are driven off the same res. If you examine the res in our cars you will see they are split at the bottom with a 3/4"-1" or so high wall between the circuits so that a failure in one circuit won't affect the other circuit as quickly. However, eventually the other section of the res will empty out. You can see the system doing exactly that when you bleed it too far (oops!). However, this would be such an OBVIOUS condition that no one in their right mind would drive the vehicle. This system is designed for catastrophic failures (accident damage causing a brake/slice of a line, wheel weight grabbing a loose line and cutting it, etc). It's painfully obvious when you have a badly leaking caliper. A slow leak (VERY SLOW) would be less noticable through the pedal, but obvious still by looking at the car.

He claims he brought the car into Toyota, they would have checked and they found nothing wrong. They would have spotted brake fluid all over a wheel/caliper one would hope.

OP: Are the damaged components on the same wheel/corner that was damaged? If so, the damage of those components seems extremely likely to be from the accident itself and not pre-existing damage.

[Rayme]

Originally Posted by wu_dot_com

i can see how thing unravel.
lets look at the facts here.
1 of the rear brake is leaking.
1 of the rear brake sensor was malfunctioning.
you were driving on a canyon road which require turning as you were applieing brakes.
per your description here are my assumptions.
the malfunction rear brake sensor is on the leaking brake.
the malfunction was sending intermitting signals.
assuming your brake fluid is almost empty due to leakage.

here is how the thing unravel.
as you pass the first turn, you applied pressure to the brake pedal but did not see reduction in speed.
this can cause by reduction in the brake system back pressure caused by leakage. or the master cylinder can be sucking in air from the overflow reservoir.
as you approaching the second turn, you hit the brakes again. assuming that you have enough brake fluid in the line for the reaming 3 brakes to be effective, the faulty sensor in conjunction with ABS is giving one of the rear tire wrong pressure command thus breaks friction with road.
in a turning condition, rather than having balance lateral resistance with both tires, your car is now in a condition where the velocity vector is changing and you are over loading the remaining rear tire with additional torque due to our LSD.
now with your remaining rear tire lost traction, the ABS is compensating it by pumping the brakes which in turn sucking more air thus reducing overall braking efficiency.

then you hit the wall without any reduction in speed.

does this sound anywhere close to what you experienced?

Remember a faulty sensor or anything wrong with the system will shut off abs and traction control. There would have been a christmas tree way longer before all that happens.

[wu_dot_com]

Originally Posted by ottopilot

Remember a faulty sensor or anything wrong with the system will shut off abs and traction control. There would have been a christmas tree way longer before all that happens.

good point.

[Le86]

Originally Posted by ric342

let me reiterate my story, 9:00 pm going back home chilling on snake way. decide to go home after hanging out for 2 hours, started the car an went on my way back to caynen. the first turn i was doing 27-29 mph. iv been down this road many times, the first turn was an easy turn the turn after that is really crazy and you have to hit the brakes if you go faster than 30. okay so i took the first turn and stared to put pressure on the brakes, it did not seem to slow down . so when i got to the second turn i hit them again and there was no response. This is all going down in seconds. so i hit the brakes one more time and they make the car veer sideways. at that point im facing a wall i turn the steering wheel all the way to the left and the tires shreek like a bat out of hell. the rear of the car hits the rock wall and continues down hill. i pull the E-brake and the car stops. I came out okay and the car was not so lucky, i bought this car on my own and i am proud to own it the issue now is if i can trust it, so to all the haters that think i was driving crazy or doing something i was not able to do, then the damage the car sustained should prove that i was not driving like a maniac, add that in fact that the car would be salvage title if i was doing anything wrong.im gong to stay optimistic and hope for the best,thank you to all who read this.

This story isn't going to fly when you try to make a case against Toyota. They're going to claim driver error unless you can prove otherwise. Good luck.

[blu_]

Originally Posted by mhigham

Even if the caliper fell off and all the fluid leaked out, you would only lose HALF the fluid and half braking. The hydraulic system is a split system, so a leak in one part will never totally lose braking. Even half brakes on this car at 30MPH is enough to come to a brisk stop in a controlled manner.

I will bet the repair costs to that car that, given the black box data, speed was more than double the stated 30MPH. You cant argue with physics.

Pics?

I have had a brake line burst and you very much lose all your brakes.

[shrike92]

Pics or it didn't happen...

[ric342]

people dont know how it is until the brakes malfunction on them so dont try to state what you dont know.

[Dave-ROR]

Originally Posted by ric342

people dont know how it is until the brakes malfunction on them so dont try to state what you dont know.

Some of us here have had brake malfunctions before. What you've written simply doesn't add up. Good luck with insurance

[Shagaliscious]

So...pictures of the damage?

Or are you just going to keep ignoring these requests? (which, btw, makes it seem like you are lying)

[Rayme]

Originally Posted by blu_

I have had a brake line burst and you very much lose all your brakes.

Yup. Had a rear line burst because of rust and you lose significant brake power. That divided system works on a few pumps until you lose all the fluid which doesn't take too long.