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ABS light, pulsing pedal while driving

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Old 09-25-2008, 07:17 AM
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Default ABS light, pulsing pedal while driving

Posting for a female friend at work, so bear with me please. Her TT, on normal driving, will randomly engage the ABS system (light starts flashing) and she can feel the braking and ABS feedback through the pedal. Then it will disengage and drive fine. Happened 2-3 times on a short (15 min.) drive.

Any ideas on what I can advise her to check or a possible cause? Thanks in advance ;-)
Old 09-25-2008, 07:29 AM
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Default Had a similar problem on my A4

ended up being the abs tone ring on the axle that the ABS sensor uses to determine wheel speed, the ring had cracked and my shop replaced the axle since the ring was attached to it. Could also be the abs sensor.
Old 09-25-2008, 07:46 AM
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Default Very very common on rears of A4s...

However, I have yet to see more than maybe 2 on TTs, but it does sound like a similar problem.
Old 09-25-2008, 08:31 AM
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Default

Possible wheel speed sensor?
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