brake system

Hi,…An issue regarding brake system of the car i' ve already change the hydrobox but still when I step on the brake almost 3 times its getting harder until it will loose my brake. What should I do to fix the issue? Thanks

My car has 95000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Hello. We will be happy to assist you. The brake pedal being lost is likely related to a hydraulic leak and the brake pedal being hard might be related to a faulty brake booster. When changing the ABS pump the brake system will have to be bled to get the air out of the system otherwise there will be a low or spongy brake pedal. A brake pedal being hard is a sign of a faulty vacuum brake booster. The brake booster should take vacuum from the engine and create additional stopping power to apply when you the driver presses the brake pedal. If the brake booster is malfunctioning the brake pedal will be hard to push because your braking system needs a vacuum force to create additional stopping power. It may be a hose to the vacuum booster causing an issue not the vacuum booster itself. I suggest to have a technician perform a brake evaluation on your vehicle. You are able to chose a technician and schedule a brake evaluation for your vehicle here
https://www.yourmechanic.com/services/brakes-steering-and-suspension-inspection

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

Options you should be sure to get are the anti-lock brakes with electronic brake-force distribution ($300) and side-impact airbags ($250), both of which can save lives and reduce injuries in an accident. Other options include cruise control ($250) and a sunroof ($750).
The anti-lock braking (ABS) system is used to maintain wheel motion and traction while braking, accelerating or cornering on a slippery surface. This system uses the same components as the traction control system (TCS), and the functionalities of both are integrated through the ABS control module.
When your ABS system malfunctions are can also cause a spongy brake pedal. Your ABS system is designed to allow the driver to maintain more control of the car in a high-speed stop.
One reason your vehicle`s ABS light is on is that it may be sensing abnormally low levels of brake fluid. If your brake fluid is low, you will be able to notice through the quality of your car`s braking as it may seem soft or spongy. In some cases, you may need your car`s brake fluid replaced altogether.
This is in addition to optional anti-lock brakes with electronic brake-force distribution, which improve steering control in an emergency stopping situation and enhance braking stability and effectiveness. Cloth or leather, the seats are comfortable and supportive.
Only the LE carries the option of leather, but alloy wheels are available on both S and LE models, along with a tilt and slide sunroof. Unfortunately, cruise control, ABS, and side-impact airbags are only to be had as options on all Corollas. We`d like ABS, at least, to be standard fare.
The four major components of ABS are speed sensors, valves, pump, and electronic control unit (ECU).
If the brakes are soft or spongy, this is a good time to change or flush the brake fluid. Flushing the brake fluid, commonly called bleeding the brakes, gets rid of the air. (Bleeding the brakes uses fluid to push air out of the brake system.) Over time, brake fluid absorbs moisture.
No. If your brake pedal feels spongy, your vehicle is not safe to drive. Identify and repair the underlying issue as quickly as possible. Spongy brakes are common and dangerous problems for any vehicle and indicative of a deeper problem.
The most common ABS problems occur when sensors become contaminated with debris or metal shavings. Malfunctions also occur when sensor wiring becomes damaged, resulting in intermittent or no continuity.
They pretty much the same thing except for a few sensors that the 2005 upwards have. The 2005 has key sensor factory security, Also has some sensors on the wheels, grill and reverse lights are different. Almost every other thing is the same. Go for the 2005, it`s more secure.
The CE, LE and Sport Corollas use disc brakes in the front and drums in the back, while the XRS gets discs at all corners. ABS and electronic brake distribution are not available at all on the CE trim, but are standard on LE and XRS. ABS is optional on the Sport.
Additional standard equipment includes anti-lock brakes with tire-pressure monitors, front and rear disc brakes, and cruise control.
If you see the light that says ABS, it means the ABS braking system might be malfunctioning. The antilock feature, along with stability control and traction control features, may be disabled.
All come standard with a five-speed manual gearbox. A three-speed automatic is a $415 option for the CE; a four-speed automatic is an $815 option for S and CE. Side-impact airbags are options for all three versions, but you have to step up to either the S or LE to get antilock brakes.
If your car is older than that, the easiest way to find out if your car has ABS brakes is to find a quiet road and relive your learner driver days by performing an emergency stop – if your car has ABS it`ll stop without locking its wheel, if there`s no ABS your wheels will lock and you`ll slide to a halt in a cloud of
ABS technology significantly lowers the risk of your wheels locking up and your vehicle skidding, especially in slippery conditions. It is no exaggeration to say that this can be life-saving, helping drivers to maintain control and to steer out of potentially dangerous scenarios.
ABS sensors are classified in to two different types, Passive and Active. Passive is without a power supply and Active is with a power supply. These comprise of a wire coil wound around a magnetic core and a permanent magnet.
There are four main components of ABS: wheel speed sensors, valves, a pump, and a controller.
These include disc brakes, drum brakes, and the parking brake. Disc brakes and drum brakes perform the same task of slowing your vehicle when the brake pedal is pressed but use different parts to do so.
In an anti-lock braking system, your car`s wheel speed is monitored and if wheel lock is detected, a sensor sends a message to a controller that releases and applies the brake up to 20 times per second, preventing a lock up and helping you maintain control of your vehicle.
1) Line pressure can only be increased by either increasing the mechanical pedal ratio or by decreasing the master cylinder diameter. In either case the pedal travel will be increased. 2) Clamping force can only be increased either by increasing the line pressure or by increasing the diameter of the caliper piston(s).
Pedal and hold

Hold. Bleed. Repeat. Loud callouts of “pump it up” or “pressure” and “hold it down” can make the garage or driveway sound like a Sunday morning at the Waffle House, but the two-person procedure is a tried and true way to get the brakes bled quickly.

As stated prior, if the rotors weren`t machined or lightly surfaced when the pads were changed, that will give you a spongy feel as you are not stopping as effectively and takes more effort to slow down. With new rotors and pads, the machine marks on the rotors help to break in the rotors and pads together.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Low brake pedal and anti-lock brakes are not kicking in.
ANSWER : The brake pedal is working to stop the vehicle, but there may be air in the controller unit causing the ABS brakes to not function. I recommend bleeding the brake system from the farthest location from the master cylinder to the master cylinder including the ABS unit. If the brakes are still spongy after a full bleed, then the controller will need to be replaced. If you need further assistance with your brake pedal being spongy, then seek out a professional, such as one from Your Mechanic, to help you.

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EPC light on 2004 Jetta. Code said brake switch faulty, but brakes lights worked. Replaced brake switch, now no brake lights.
ANSWER : Hi there. The first thing that pops in my mind beyond of what you have listed is perhaps the electrical harness attached to the brake switch. Perhaps the harness itself is damaged or you have an exposed wire, loose ground wire somewhere. You might want to have a professional mobile mechanic come to your location and complete a brake lights not working inspection to help you diagnose this issue.

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Supportive bar attached to brake pedal interrupts proper braking process
ANSWER : It’s possible to have someone alter the brake pedal or adapt a brake pedal from a different vehicle. You may call around to some customization shops to see if anyone is interested in taking on the project. But first, I would try reaching out to the selling dealer with your concern – especially since it is a new model. Good luck.

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When I put my foot on the brake my back left brake light goes off, when I take it off the brake the brake light comes on
ANSWER : I would suggest trying to disconnect and reconnect the wiring to the rear lights. I have seen these older Toyota vehicles rear lighting short out on the lights themselves due to the way the light circuit was made on the lamp housing. Look at the housing circuit on the light to see if one is touching another, and that could tell you why it is malfunctioning. There could also be a problem with the brake light switch. If you are not comfortable dealing with wires, I recommend getting in touch with a certified mechanic who can look at your brake light issue for you to see what’s going on.

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check break system and indicators of side brake, doors open,and traction system and full light warning in dash board
ANSWER : Hi there, thanks for writing in.

It sounds like you are having a serious electrical malfunction, which is very hard to diagnose without being able to look at the car first hand. The first step to diagnosing your electrical issue would be to scan all the relevant control modules in the vehicle, to see if there are any faults relating to any of these issues. It sounds like somebody at the dealer has been trying to fix this problem, so it may be a more involved one. I have personally seen failed control modules cause things like this, but that is no guarantee that it’s the problem in your case. It would be best to have a qualified independent technician, such as one from YourMechanic, look at your car to diagnose your electrical problem.

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I replaced the brake light switch. Gear lever unlocked because it had locked. Now the brakes feel hard.
ANSWER : Hi, thanks for writing in. You need to check the brake switch install adjustment. You may have the switch adjusted too tight and it is holding the the brake pedal partly down. This will cause the brake master cylinder to not release the brakes when you let off the pedal. Readjust the switch away from the pedal until you feel some free play again in the pedal. This should fix the problem. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

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Brake sensor is to sensitive causing brakes to flicker while driving. 2005 Mercury Montego
ANSWER : Hi there – your brake light switch needs a minor adjustment. It is adjusted too "tight" or close to the brake pedal lever, or possibly has failed. Adjusting/replacing it will eliminate this flickering problem. I recommend a brake light isn’t working inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.

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Driver has to pump brake pedal multiple times to brake
ANSWER : I’m not familiar with a pump assisting the system, but the master cylinder creates the hydraulic pressure needed to transfer power from your floor to the brake assemblies. A failing master cylinder can feel like a leak in the hydraulic system as it cannot create the proper pressure. Have a certified technician, like one from YourMechanic, physically inspect the brake system for any actual leaks as well.

Read Full Q/A … : brake system