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ABS light S70 1998

posted by  414dude on  Sun Dec 20 12:44 CST 2009
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last visit: Wed May 7 19:44 CST 2014
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Yes....I've read and researched this topic and know there are a lot of posts. Just a quick question though, if I back up and press the brakes a few times, then drive forward to 35 mph, the ABS light extinguishes. After a few miles though, I'll hear/feel the ABS system activate and have the ABS light stay on. Does this sound like a faulty module or possibly a sensor on one of the wheels?

Thanks,
Vinnie








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    ABS light S70 1998

    posted by  someone claiming to be Zdenek on  Sun Jan 24 11:37 CST 2010 [RELATED]

    ABS modules are crap. Volvo should replace them all in good faith.
    Come to think of it, once VOLVO started making FWD and AWD and outsourcing parts and labor to the lowest bidder, 'crap' was to be expected...
    (2xx, 7xx, and 9xx were great cars).







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    ABS light S70 1998

    posted by  David Samuels on  Sun Jan 24 03:33 CST 2010
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    last visit: Mon Oct 20 12:23 CST 2014
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    Someone mentioned Victor, but I did not see a link on the posts. The 97-98 cars are prone to the board in the ABS module overheating and cracking, causing intermittent failure. My experience is that the light will drive you nuts for a couple of months, going on and off. At first it seems to be in response to brake usage or some other factor and can be reset by re-starting the car. It gets worse though, until is just stays on. Seems they go out between 60 and 100k miles regardless of age. Our V70 just turned 70k and I'm expecting the problem any minute now! Victor (Vitor) rebuilds the modules.

    http://home.earthlink.net/~vicrocha/

    He's a pleasure to work with.

    DS








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    ABS light S70 1998

    posted by  someone claiming to be SUPERBAD on  Wed Jan 20 09:57 CST 2010 [RELATED]

    given the scope of the ABS module problems I am surprised that it has yet been a recall item. virtually all of them fail at one point or another.








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    ABS light S70 1998

    posted by  KlausC on  Sun Dec 20 15:00 CST 2009
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    Good for you, you need to get the codes read before assuming the ABS module is bad. So long as the ABS light is on, codes are stored. It could also be the brake pedal position sensor, lots of possibilities.

    Klaus
    --
    Proud owner of a 220S. If I had more room, I would have more Volvos.








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      ABS light S70 1998

      posted by  414dude on  Sun Dec 20 15:30 CST 2009
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      Hi Klaus,
      Thanks for the info. I just finished checking the sensors on the wheels.....all seem to be good. I cleaned them up anyway.
      I'll have the Advanced Auto Parts people read the OBD II in the morning.
      BTW, what does the brake pedal position sensor do? Where is it located in my car? How much are these?




      Thanks!
      Vinnie








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        ABS light S70 1998

        posted by  KlausC on  Sun Dec 20 17:02 CST 2009
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        last visit: Fri Oct 24 10:15 CST 2014
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        It sticks out of the vacuum booster in the engine bay. 2 wires, it lets the ABS module know how much brake pedal pressure is being applied. My 1995 got very wet and shorted out for a few days, all was well after it dried out. About a $40 part.

        The 1998 is also known for ABS module failure, but you need to check the codes and then visit Victor's site to compare the codes.

        Klaus
        --
        Proud owner of a 220S. If I had more room, I would have more Volvos.







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