Question about 1994 Volkswagen Jetta

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Brake light on dash is on, alarm goes off continually while driving, although front brakes including sensors, rear brakes and front and rear rotors where replaced. What can possibly be wrong? Also brake fluid is full and nothing is leaking.

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  • PARRISHL Nov 09, 2008

    BRAKE LIGHT ON DASH LIT - CONSTANT BEEPING FROM SENSOR - NEW PADS ON BACK - GOOD ON FRONT - NO FLUID LEAKAGE

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Put key in drivers door and lock it and unlock it about 3-6 times

Posted on Nov 27, 2008

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I have a 99" Ford Windstar LX, When I press on the brakes the pedal shakes and it makes a grinding noise after driving a few miles the abs light goes on. I have replaced, pads, rotors, master cylinder,...


if you replaced all the brake parts I would check your hub bearings and cv axels if the noise is coming from front if the noise is in the rear check your e brake shoes located inside of the rear brake rotors if u have disc rear brakes or your rear brake bearings .. hope this helps

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Brake not releasing


Hello,

here are a couple of suggestions:

E-brake not releasing--
- The e-brake is a mechanical brake not hydraulic as if you were to apply the brake pedal. If the e-brake is released but the brake will still not release this is usually a spring failure, the spring that releases the pads or shoes from the rear wheels. There is a cable going from the handbrake in the vehicle to the rear brakes. There are other things that could cause the problem so checking the brakes to see what is going on is the first step.

If you have a "brake" light on the dash--
- if you think that your brake is still on because your light is still on then this may not be the case. Many things cause the light to come on including (things to check):
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proportioning valve sensor (if you unplug the sensor and the light goes off, this is the culprit)
Brake pedal sensor
Master cylinder and/or booster

Brake pedal not releasing or returning--

master cylinder and/or booster
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What would be the causes for brake lining study light to come on in a bmw x5 2005.


Study light? Do you mean warning light?
There are sensors clipped into the brake pads on the front left and rear right wheels. When the brake pads get very thin, those sensors rub on the brake rotors, and the light illuminates in the dash indicating that it is time to replace the brake pads.
The light can also illuminate if something damages the wire to the sensor. I usually replace my pads before they get down to the sensors, so I re-use my old sensors. Although the wires are fairly well secured to the suspension, after a few years, the wires can get chaffed from the wind blowing them around, and the damaged wire can turn on the warning light.

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The check trac control warning and track contr. light stays on while driving, is this brake pads?


It can be the pads. The wheel sensors count the revolutions of each wheel. On some rear drive differentials there is a sensor in the Differential that can go bad. But if the Brake pads are in pieces, the wheel sensors view can be blocked and the sensors lose count.

The Traction control will activate. Traction control can work in several ways. Some controls activate the rear brakes until both rear wheels are spinning the same RPM. This is destructive to the brake pads. Additional Traction control will cut the engine by choking it or interfering with the Ignition. When the rear wheels spin the same RPM, power is restored. This system is easier on the brakes.

The Emergency brakes are inside the rear Rotor if you have 4 wheel disc brakes. The sensors are in the Drum portion of the Rotors. A lot of Brake shops fail to check the E brakes because so much has to be disassembled. Your Mercury should have a Button on the dash to turn off the feature. Turn it off until you can have it checked.

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When the anti lock brake light on my 93 lincoln town car comes on, if I am pressing on the brake at the time, makes the brakes grab. It also happens just before the light comes on. I have had the front and...


the abs light on the dash should come on when the abs is working (emergency braking)if it comes on when braking normally(gently)chances are a sensor is gone(replace in pairs,fronts & rears)
abs stops the wheels from locking up in an emergency brake situation,you will feel the grab-release,grab-release on the brake pedal......

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ABS light and Trac Cont light stay on....


Check your rear brakes and inside the rear Rotors. There are ABS scanners and if Autozone or Oreillys have that type of scanner, they will scan for free.

Because the Trac Control is on the Rear axle all of your problems are probably rearward. What usually happens is the Emergency brake material and the Rotor pads wear down and blind the sensors. Sometimes the Trac Control will destroy the brake linings. The Trac Control works by applying the rear brake to the fastest spinning wheel in an effort to match each rear wheels speed.

When the sensors have debris flying in front of them, they miscount and include the debris in figuring RPM. Someone needs to disassemble and inspect the back brakes.

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probably a dumb question, but if there is a backing plate, did you make sure it isnt bent and hitting the rotor? you never want to sand new rotors, although i dont think it would cause this concern. i would suggest lightly scuffing up the brake pads. this will eliminate any noise caused by the contact of the rotors and pads. if it goes away then you know its a problem with the pads/rotors.

scoring of only the inside rotors would make me think that possibly the caliper slides are frozen up. make sure they move quite freely on the slides. it is not uncommon for brake pads to score rotors though.

but brake noises at low speeds that dont' change when applying light brake pressure are usually some sort of metal or something contacting the rotor.

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