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ABS/TRACs lights on - Sensor problem or so I am told S60 2001

My S60 only has 45,000km on it. All three "ABS/STC/Emision service required" lights came on recently. I brought the car into the authorised Volvo workshop and was told that it was an 'intermittant' problem and that the ABS sensors are faulty. I double-checked with the engineer that it is not the ABS module problem (which is common based on what I have read in forums like this), and was told that it was only the ABS sensor. I am currently appealing a rejected "goodwill claim" from Volvo. Whilst waiting for the appeal, I have been driving with the ABS/Tracs/Emission lights on. Lights do go off sometimes, and sometimes only one of either ABS or Emission lights come on.

However, for the past couple of days, there is a loud grinding sound coming from the front wheels. This usually happens within the first few minutes upon starting the car and picking up speed. There is also "clicking" sounds which turns into "crunching", "grinding" sounds as I step in the brakes. I can also feel the grinding on the brake pad. It usually goes off after I come to a complete stop.

Is this normal when there is a problem with the ABS sensor? Went to another Volvo mechanic to get a second opinion and he seems to think so.








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    ABS/TRACs lights on - Sensor problem or so I am told S60 2001

    The noises could be the activation of the ABS/STC system (When it is not needed).
    When the noises are present, do you feel a pulsation on the brake pedal?

    Every time you start the car and drive it over 14 MPH the ABS system performs a self test to make sure all the components are working. Usually the self test is not very noticeable.

    The problem you describe is very common on the 850, 70 and S80 series Volvos.
    I have not heard of this type of problem with the S60.

    On the other hand, if Volvo used the same ABS control unit as the one that was used on all the other Volvos, then the unit will eventuall fail or has failed already.

    Here's information I have on this subject, remember, this is for 850, 70 and S80 series.
    Vitor's ABS Web page
    Click on the ABS / TRACS Link








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    ABS/TRACs lights on - Sensor problem or so I am told S60 2001

    The clicking,grinding and crunching noises have nothing to do with your ABS sensor(unless it is dangling by the harness and is getting caught up in the wheel which I highly doubt). When were your front brakes last done? Regarding your sensor fault code. Sensors do fail on occasion and I'm surpirsed (and disturbed) that is is happening on such a new car with low mileage. Have your pads and rotors looked at and replace the faulty sensor(s).
    --
    '82 240DL Stock / Masters Class, '94 850 Fully Loaded / Daily Driver, CVC / VCOA Member http://www.capcan.com/tonyg.htm








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      ABS/TRACs lights on - Sensor problem or so I am told S60 2001

      Brought my car back to the authorised workshop. Got an 'expert' test driver to to try the car out. He, too, doubts it is a fault with the ABS sensor. Thing is that the grinding sounds come on without the brakes being pressed on. He also thinks that it could be the ABS module, and as Vitor has mentioned, he too is concerned that this is all happening at such a low milege. However, plugging into the Vardis does reaffirm that it is not an ABS module issue but the sensor (at least not yet). Finally, I struck a deal that I will have the front left ABS sensor replaced and if the problem is not fixed, I will not pay for the bill

      Thanks for the feedback. It is positively reassuring to know there are people out there who do take the time to help out







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