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Anonymous
Anonymous Posted on Aug 19, 2010
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Abs active light on, brakes pulsate when tapped. what's that mean?

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  • Anonymous Aug 22, 2010

    when i lightly step on the brakes the traction control goes on, and the ABS active light goes on even on a slow roll. any ideas?

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  • Posted on Oct 03, 2010
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The ABS Active monitor comes on when one or more of the wheels are not spinning at the same rate of speed. The ABS system determines wheel "lock up" from the wheel speed sensors and will adjust brake pressure to unlock the skidding wheel(s). It achieves this operation with a pump which will rapidly pump the brakes to the specified wheel. I'm assuming this is the "pulsation" you are experiencing. If you are having this problem under light to moderate braking, be sure to have the proper size tires on all 4 wheels. Incorrect tire sizes and uneven tire wear will give improper wheel speed information the the ABS controller. This will result in a malfunction of the system.

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