Lexus brakes repair questions and answers
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70 Questions
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What is the brake sensordees - 1999 Lexus RX300 - Brakes - 7/5/2011the symptoms i am having when i am parking on the left the brakes automatically releases and makes this crunching noise-
7/5/2011 Spoon SportsIt is possible that your wheel bearing/hub assembly is so far gone that it is grinding, a bad hub will turn on a ABS light, but i would think you have two problems, brake pads and maybe a wheel speed sensor.
Please do not reply by clicking "Reply". reply by clicking "Answer Question" so it will reflect in my INBOX so i can get back to you if something comes up
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When i go t stop and put my foot on the brake i har a knock noise - what is that?vynnej - 1990 Lexus LS400 - Brakes - 7/3/2011-
7/3/2011 JimmNeed more information; is the noise from the front or rear of the vehicle? Can you determine if originating from the left or right sides? Several possibilities; loose brake caliper / not secure, loose brake pad inside the caliper, or loose / faulty wheel bearing.
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My car is leaking fluid from what it looks like in between the rear wheels?? there is huge puddle I have already changedChuck - 2008 Lexus IS250 - Brakes - 5/13/2011my oil does need to be changed Vehicle mileage 30000 Front brake pads have been replaced rear have not yet I first noticed it today I havent driven since wedneday it was fine then no check engine light is just oil & engine oil I think its the brake fluid because it ...-
5/13/2011 BillFrom your explanation it sounds like a leaking caliper piston seal. How is the brake fluid level in reservoir?
5/13/2011 HouseCallAutonice call Bill.... -
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How do you reset or turn off brake pad wear warning light in main instrument paneljpad247 - 2000 Lexus LS400 - Brakes - 5/5/2011changed brake pads and light has stayed on-
5/5/2011 Spoon SportsTry disconnecting the battery for a minute or two. I don't recall for sure, but it may be possible that the brake light will turn off with this battery reset. If the light still stays on, then try checking the sensor wires on the front wheels. Don't forget it's a good idea to always disconnect the battery before doing any work; especially when performing this type of repair. Also, if the pads have been replaced then they should have the sensor wires connected (especialy if the dealer fitted them) If cheaper pads have been used without the sensor wires then the warn light is going to stay on.
This wire, when new pads are inserted, now returns to a closed circuit because it is not touching the rotor. BUT, if you either 1. wait too long to change pads while the warning light is on, or 2. have had multiple brake jobs, THEN this wire will end up rubbing against the rotor and thus break / wear through. With a broken wire, the brake light will remain on, unless you either solder a new piece of similar gauge wire to replace the missing piece, OR purchase a new sensor assembly.
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I am not getting any brake fluid to my back brakes i have to pump my brakes to stop my carronald clark - 1999 Lexus GS400 - Brakes - 3/29/2011changed the front & rear brakes and bled them-
3/29/2011 Nissan Technical AdvisorTry to service brake master cylinder, could be the secondary piston seal is worn or cracked. Check also brake calipers at the rear and service them as necessary.
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I want to ask everybody have GS430 lexus is the brake good with you i mean the brake is not fast well function ? is it nAmmar - 2001 Lexus GS430 - Brakes - 3/19/2011 -
Replaced all 4 wheel pads and bleed all wheels but pedal is still low to floor.. why?wally - 2000 Lexus LS400 - Brakes - 2/21/2011-
2/21/2011 RCDid you have a low pedal before the work was done? Maybe the master cylinder is leaking internally.
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1/22/2011 J and K AUTOMOTIVE TOWING AND REPAIR
Fill the master cylinder with brake fluid before beginning. Jack the car up so that the two rear wheels are about six inches above the ground. Slide under the right rear wheel and look at the back of the brake system for a small bleed valve. A bleed valve is a hollow bolt. When loosened it will allow the brake fluid to flow out and result in the vehicle having no brakes.
Fit a rubber hose over the end of the bleed valve. Make sure it forms a tight seal and make sure the free end is below the level of fresh and clean brake fluid. As the brake fluid in the line pushes out of the system, you will see a bubble come from the end that is under fluid.
Have a helper sit in the driver's seat and follow your instructions. Tell your helper to pump the brakes hard a few times. Open the bleeder valve and tell your helper to press the brake pedal firmly down to the floor and hold it there until you indicate otherwise. Close the bleeder valve and have your helper release the brake pedal.
Repeat this process until you see a small bubble ejected from the tubing under the surface of the brake fluid in the jar. Once you have finished with this wheel, move to the left rear wheel. Before you begin the next wheel brake, refill the master cylinder reservoir. Get set up and repeat the same steps for this tire. The next two wheels you will bleed are the right front wheel and then the left front wheel.
Bleed the wheels in the order of the longest brake line first and then working towards the shortest brake line. Refill the master cylinder reservoir before beginning each new wheel. Once the rear brakes are finished, lower the car and jack up the front of the car. Remember to road test the brakes and make sure they operate well.
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What is wrong w/ my ABS ?jimmy - 1998 Lexus GS400 - Brakes - 1/3/2011the car has 175000 miles, changed brakes but never the rotors. the abs will activate during a normal stop, and only the last 3 seconds b4 the car stops completely. no ABS light on for malfunction. all speedsensors were checked and all normal....-
1/3/2011 Bobbysometimes the abs modules go bad, and how do you know the speed sensors are normal, how were they checked? they may look ok that doesn't mean they are not malfunctioning. Get a scanner hooked up that can read ABS codes, even though light is not on there could be stored codes that may lead to the problem.
1/3/2011 jimmysir,
happy new year to you and thanks for answering the question. it was checked w/ a scanner tool while i was driving, the mechanic was checking the reading while i was driving. how do i check for the abs module?
jimmy
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No brakes, have to pump them and still loose brakes after a short red light...Julie - 1995 Lexus LS400 - Brakes - 12/27/2010I have a 1995 Lexus LS400 4door, anyway, i knew that the brake pads needed replacing...the care was given to me about a year ago...the brakes used to make noises when i first used them in the mornng, but would go away... Well unfortunaely i have not worked at all on ...-
12/27/2010 jlofwashthere is only one answer, if you had to keep adding fluid, you definitely have a leak. do you see any wet surfaces by your wheel wells or on the inside of your tires? if so that needs to be fixed first. that fluid has to be going some where. check for wet surfaces and then repost.
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When brake pedal is pushed all interior lights goes off every time in addition to not having any brake lightscharles - 1992 Lexus LS400 - Brakes - 12/5/2010-
12/5/2010 Nissan Technical AdvisorNeed to check the wiring for grounded wire; maybe a difficult task that require a professional electrician.
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11/18/2010 MOONSTER_TOOLZPark your vehicle on a solid level surface. Set the parking brake and chock the rear wheels. Remove the front wheel hub caps if applicable. Using a tire iron, break loose the front wheel lug nuts but do not remove. Using a floor jack, lift up the front of your vehicle. Secure the vehicle with jack stands on both sides for safety before starting any work. The pinch welds or the frame rails are the two best locations. Do not rely on the jack to hold the vehicle up while working. Remove the front wheel lug nuts. Remove the front wheels and set them aside. Inspect the brake caliper for any signs of binding. Look for rust and uneven brake pad wear. Remove the brake caliper mounting bolts (sliding bolts). Remove the brake caliper. Remove the disc pads if they are attached to the caliper. Support the caliper up and away from the working area. Do not allow the caliper to hang by the brake hose. Clean and lubricate the sliding bolts. Attach the disc pads to the new caliper if applicable. Install the new caliper over the brake disc (rotor). Attach the caliper to the mounting bracket with the sliding bolts. Tighten the caliper sliding bolts to the manufacturer’s specifications. Disconnect the brake line from the old caliper. Attach the brake line to the new caliper using new copper washers. Tighten the banjo bolt to the manufacturer's specifications. Repeat for the other side. Bleed the front brakes. Reinstall the front wheels. Snug down the lug nuts. Remove jack stands and lower the vehicle to the ground. Torque the lug nuts to the manufacturer's specifications in a star pattern. Verify that you have a solid brake pedal. Road test the vehicle to check the brake caliper repair is ok.
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When i am driving with the speed of 60mph and i push brakes i can feel a strong shake and vibration on the brake pedal?jksule - 1992 Lexus SC400 - Brakes - 11/14/2010-
11/14/2010 obrienstruckFrom the symptoms you have described it seams like you have warped front rotors, They can be checked with a micrometer and or a dial indicator to check for run out and also the thickness of of rotor's. Most likely time for front brake repairs
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10/25/2010 yboy82It is possible that your brake caliper piston is rusted or debris build up on the brake caliper pistons or in the piston bores. Also check if there is pressure on the brake caliper piston (or on its firm lever (condition) if equipped). -
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10/25/2010 yboy82In some cases the cause of stuck piston are defective proportioning valve and/or a brake master cylinder. -
10/25/2010 yboy82It is also possible that the cause of your vehicle’s problem is inside your master brake cylinder. When continually applying brakes, the master cylinder heated up and if the rubber seal (primary seal and/or secondary seal) is worn it will expands then the piston on your brake master cylinder stuck up and you have no hydraulic power in your brake system/no pressure to push/operate the brake caliper piston and when it cools down the seal will return to its normal size and allowing you piston in your brake master cylinder to operate. -
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