Question about 2008 Toyota 4Runner

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Red brake light and all 3 yellow lights for brake system came on.

At first were told this was caused by a speed sensor in tire recently changed. That did not work. Now delership says it is a damaged skid control ECU that needs replacing at cost of $1700.00. We want a second opinion ,but not sure where to go. We live in Rensselaer,Indiana

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  • Toyota Master
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Whats a skid control???or do you mean the ABS ,if its the ABS then yes its lots of dosh(cash) no quick cut their as its part of the annual vehicle inspection,but if your stateside and only emmissions are checked so far then either ignore the lights by taking the bulbs out,or remove the unit completly and make some new brake pipes up.

Posted on Jan 07, 2009

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I have 3 sensor lights that came on at the same time. The brake light,tire pressure light, and the ABS light(I think). A friend had a portable diagnostic computer and plugged it in. No problems...passed....


there area magnitude of things that can be the issue here. I wil take a chance here and say that there is an issue with a couple of sensors. This situation involves 1. The brake light sensor (which indicates that i brake light bulb is faulty) 2. The Tire pressure sensor (which is the tire pressure) and 3. ABS sensor ( Which i would associate it with a wheel speed sensor)

You should check the tire pressure, and correct it. Check the bulbs on your brake light and replace as necessary. Then check for a torn or broken ABS sensor, which are located on each wheel,

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Recently i change the brake pads and the abs & tc lights turned on, anybody can help me with this matter


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I have a 2004 alero with 3 lights on, EFT light, Sevice engine soon, and Anti-brake lights. what does this mean?


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Scan the ABS codes on the car and that will help. Here are some points of failure:
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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
  • rear wheel speed sensor rings
  • yellow anti-lock brake warning indicator
The 4-channel anti-lock brake system with traction control and stability assist system consists of the following components:
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  • brake booster release switch
  • front wheel speed sensors
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  • hydraulic control unit (HCU)
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  • brake pressure transducer
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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.
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  • 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.
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  • 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.

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

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    TL

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