Question about 2003 Toyota 4Runner

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How do I service the rear brakes without a negitive side effect screwing up the anti-lock system? I have ability to pull the rotors, have them turned and replace the pads. But I am concerned about an trick or extra step needed to do the work without negitively effecting the anti-lock system.

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If you take your time and do it carfully your ABS will not be affected, make sure you clean your braket slides and pins, and brake pads move with easy in it, also make sure your rotors are machined by a good shop and theyre not warped.
good luck

Posted on Mar 27, 2011

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Posted on Jan 02, 2017

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What year Dakota? Drum Brakes?

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1 Answer

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The reason is, you have a rear anti lock brake system. The anti lock valve is located on the frame just underneath the brake master. It is called a RABS valve. Almost impossible to bleed. But it can be done. A dealer has a tool that plugs into the RABS valve which activates the valve constantly moving the valve back and forth. This will then push all fluid and air out of your open bleeder screws in the rear.
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Mar 29, 2012 | Cars & Trucks

1 Answer

1999 Ford E350 van problem: brake pedal is soft; have replaced master cylinder, rear wheel cylinders, rear brake shoes and drums, front calipers, rotors and discs; have bled master cylinder before...


Good question, on the antilock system is a bleader too and bleade it the same way you bleade the caliper. After all is done adjust the rear brakes, they should have a drag to them.

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How to remove brake rotors on a 1996 ford explorer


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  • Install the rear disc brake rotor.
Reassembly Reassembly is easy. Put new or machined rotors back on by sliding them over the lugs (they should slide on easily.) Loosen bleeder valve (having a catch bottle handy is good). Push calipers in slowly (using a c-clamp or large channel lock pliers), close bleeder valve. Put on pads. Lubricate metal clips with small amount of anti-seize. Re-adjust the emergency brake by turning the opposite direction from loosening. Refill the brake master cylinder

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2 Answers

When i brake at 50mph the vihicle shakes real bad It doesnt feel like warped rotors it feels like the abs is not working properly. Is there a quick fix like pulling the fuse for the anti lock system so i...


If your fuse box has a fuse for the ABS system, then you can pull it out and retest your vehicle. If shaking continues, have your tires and wheels properly balanced. Check tires for humps or deformations, better yet, ask if possible to borrow a couple of tires and rims (that fit your car) from someone that you know has no shaking problems and retest your vehicle. Warped rotors are the last thing to look at when problems like this arise, but are not uncommon.

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3 Answers

ABS light on after replacing the front and rear brake pads .


u will need to check the wheel speed sensors behind the brake rotors to see if they got damaged or disconnected during the brake job, as long as the ABS light is on the Anti-lock brake system is disabled, regular braking without the need of ABS will feel fine.

Apr 01, 2009 | GMC Sierra 2500 Cars & Trucks

1 Answer

Problem with my cruise control and ABS light on 03 Explorer


Anti-Lock Control —Vehicles Built After 03/2002 The 3-channel anti-lock brake system consists of the following components:
  • front wheel speed sensors
  • front wheel speed sensor rings
  • hydraulic control unit (HCU)
  • Anti-lock brake control module (ECU)
  • rear wheel speed sensor
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The 4-channel anti-lock brake system with traction control and stability assist system consists of the following components:
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---------------------------------------------------------------------
I suspect the abs issue is causing the speed control not to work if it happened at the same time the cruise control stopped working. When the yellow ABS light comes on, it means the ABS is dactivated. You may have a faulty accelerometer which senses acceleration and yaw (side to side lean). I have not seen a bad one but you said it is sensitive to acceleration.
I would unplug it and see what happens. The connector should have a small tab to depress so you can pull the connector out.
Here is where it is:

Accelerometer Removal and Installation
  1. NOTE: The accelerometer is located under the center, rear passenger seat carpet. (I think you have to remove seat for access).
    Cut the carpeting along the perforations.
  1. Disconnect the electrical connector.
  1. Remove the nuts and remove the accelerometer.
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Have dealer hook up tester and pull fault codes if you can't find an easy solution.
Some background info
  • A malfunction in the anti-lock brake system will cause the anti-lock brake control module to shut off or inhibit the system. However, normal power-assisted braking remains.
  • Malfunctions are indicated by the yellow ABS warning indicator in the instrument cluster.
  • The anti-lock brake system is self-monitoring. When the ignition switch is turned to the RUN position, the anti-lock brake control module will carry out a preliminary self-check on the anti-lock electrical system indicated by a three-second illumination of the yellow ABS warning indicator in the instrument cluster.
  • During vehicle operation, including normal and anti-lock braking, the anti-lock brake control module monitors all electrical anti-lock functions and some hydraulic operations.
  • Each time the vehicle is driven, as soon as vehicle speed reaches approximately 20 km/h (12mph), the anti-lock brake control module turns on the pump motor for approximately one-half second. At this time, a mechanical noise may be heard. This is a normal function of the self-check by the anti-lock brake control module.
  • Pedal pulsation coupled with noise while braking on loose gravel, bumps, wet or snowy roads is normal and indicates correct functioning of the anti-lock brake system.
  • Warning Lamp Indicator
    The anti-lock brake system (ABS) uses the yellow ABS warning indicator to alert the driver of a malfunctions in the ABS.
    The yellow ABS warning indicator will come on to warn the driver that the ABS has been turned off due to a symptom that exists in the ABS. Normal power assist braking remains but wheels can lock during a panic stop while the yellow ABS warning indicator is illuminated.

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    Please report back, I am curious if that is what it is. Good luck

    Mar 03, 2009 | 2003 Ford Explorer

    1 Answer

    Anti lock brake light on


    It is most likely a bad front wheel speed sensor.Your sure abs rings were on back of rotors?It is going to be next to impossible to fix without getting the code with a scanner

    Aug 25, 2008 | 1997 Chevrolet S-10 Pickup

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