Warning message on after replacing brakes
I recently had my brake pads replaced. The brakes are now squeaking and I have a warning message telling me to have my brakes serviced.
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Your vehicle has two sets of brake pads. Front pads and rear pads. Depending on which ones were replaced, the other set might need replacing. The other possibility is that you have an issue with a caliper. If the caliper gets stuck, it is almost like you driving while lightly applying the brakes. This will wear the brake lining material quickly. My advice is to have a qualified mechanic help you diagnose your brakes since faulty brake components can be a major safety issue.
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Bedding Process. As mentioned, new pads are typically abrasive and are sometimes coated with protective elements that can cause noise. After some wear, sometimes referred to as a “bedding process,” that brake pad squeak will go away.
As mentioned above, ceramic or metallic pads or moisture can cause pads to squeak. This type of squeaking is usually harmless, says Popular Mechanics. But new brake pads can also squeak because of a foreign object, explains Bockman`s Auto Care. Twigs, pinecones or rocks may get stuck between the brake pad and rotor.
Normally, brake squeal would indicate that the pads need replacing. In a Lexus F Performance car, it means that the brakes are doing exactly what they are designed to do. Brake squeal simply tells you that the pads are working with the power of the entire system to slow down or stop your car.
It could be that the brakes weren`t lubricated correctly in the service. Or, that new brakes weren`t broken in correctly. The driver may have unintentionally overheated the new brake pads to the point where the brake pads developed a glaze from overheating, which does cause squeaks.
1. New Brake Parts. It is quite common for new rotors or brake pads to squeak within the first few days before they`re completely broken in. If it has been more than a few days and the squeaking still hasn`t stopped, you should have your brakes looked at by a professional.
The most common reason brakes squeak is that the metal wear indicator on the brake pad touches the metal rotor. This is normal and expected from wear over time, but does indicate you should replace your brakes soon. Brake pads have a built-in mechanism to inform the driver when they are getting low and need replacing.
Often, you`ll just have to clean the rotor surface and brake pad. A squealing/squeaking noise is caused by rust formation, usually due to water on the rotors. If moisture collects on the rotors surface, a thin layer of rust is formed.
400 to 500 miles of moderate driving is recommended. Heavy braking should be avoided during this period. In a safe area, apply brakes moderately from 60mph to 30mph and then drive approximately 1/2 mile to allow the brakes to cool. Repeat this procedure approximately 30 times.
Sometimes when new brake pads are installed, sediment can inadvertently be pushed back into the hydraulic system. This sediment can damage the master cylinder. A worn or malfunctioning master cylinder. If the master cylinder isn`t performing as designed, it may need to be replaced.
Many brake experts recommend breaking in new brake pads with a 30-30-30 procedure: 30 gradual stops from 30 mph with 30 seconds in between each stop for the brakes to cool. This procedure will prevent the pads from getting too hot until the resins have fully cured.
Noise-Level: Ceramic brake pads are very quiet, creating little-to-no extra sound when the brakes are applied. Wear & Tear Residue: Compared to organic brake pads, ceramic brake pads tend to produce less dust and other particles as they wear down.
A grinding or growling sound when you press down on the brake pedal typically means that the brake pads have worn through and now are grinding into the rotors. Grinding or growling brakes indicate metal on metal contact – meaning you have no braking material left.
Most brake pad compounds will take up to 300-400 miles to fully develop an even film transfer onto the rotors.
A lot of brake pads have metal fibers in them. If there`s an area on the pad where the metal fibers are too close to one another, this can cause squeaking. The pad will typically wear past this point, and then the squeaking will go away. Panic stopping can leave a glossy finish on the brake pad.
A lot of brake pads have metal fibers in them. If there`s an area on the pad where the metal fibers are too close to one another, this can cause squeaking. The pad will typically wear past this point, and then the squeaking will go away. Panic stopping can leave a glossy finish on the brake pad.
Squealing brakes at low speeds can also be caused by dirt or debris trapped within the braking mechanism causing an area to rub resulting in a high pitched squeal. At higher speeds, the rubbing occurs more quickly which can result in a different frequency that is no longer audible.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
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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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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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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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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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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I just replaced my brake master cylinder and the brakes still feel soft. What do I need to do after I replace the master cylinder
ANSWER : From what you’ve described you will have to bleed your brakes. Also, I believe you may have a leak in one of the lines. You may want to use a wrench and tighten the lines a little more. If you’re unable to fix this yourself, consider YourMechanic, as one of our mobile technicians can come to your home to bleed your brakes, diagnose the Check Engine Light, and help you make the appropriate repairs to your car.
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abs light on brake line broke have been replace I bleed brake line but brake pad still go to the floor now wheels lock up
ANSWER : Hello. If the brake pedal is going to the floor then that means that it is not building pressure. If the brake system has been fully bled and there is no air in it then most of the time it is a bad master cylinder or it can be caused by a bad ABS module. If the brake fluid was low and if air got into the system then the only way to properly bleed it is with a scan tool that would allow you to open and close the valves in the ABS unit. Air gets trapped in these easily if the brake fluid gets low. This can also explain why the brakes are locking up. I would usually use my scan tool to bleed the system out first before going any further. I would also scan the brake control module to see what it is reading as a fault. If there is no air in the system and if there is no prominent code then I would replace the master cylinder first. If you want to check out why your brakes are locking up, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair this.
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Brake lights are not working. replaced brake light swtch still no brake lights. the third brake light the connection was melted at
ANSWER : The first thing to do is to repair third brake light and replace the brake light fuse and then see if the third brake lights work and the lower lights start working? If only the 3rd brake light starts working then you may need a further checks on the turn signal flasher or switch could be bad.
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