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ABS/PSM Faulty Lights

99 C4
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99 C4 Member

99 C4

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Posted

I have a 99 C4, and this weekend I went for a drive and my ABS light went on along with PSM/off. I did not do any hard braking or anything like that, It just went on during the drive. After pulling over and re-starting the car, the light's went off.

This is the second time this happened this month, eventhough the lights go off after re-starting, I wanted to know if anybody experienced this, or has an idea of what might be causing this.

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Brokenleg Member

Brokenleg

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I am experiencing it on a 2001 turbo. I saw your other post on Rennlist and the reference to MAF problems. Mine started for about a week than the CEL came on and it was a failed MAF (I oiled the K&N, not suppose to do this in a turbo i guess). However, after replacing the MAF, I still get periodic ABS with PSM lights. I had read in another post that a tangled wheel sensor might be breaking the connection periodically and causing the fault. I have also read that chips (ECU upgrades) may be causing the problem as well, I have a cargraphic chip.

Still looking for the answer myself.

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99 C4 Member

99 C4

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AS I said before....

Battery...!!!

Motor turning over a bit slower than normal during startup....

I checked my brake fluid also, and it is good. In terms of battery, well I just replaced it in January. No problems in starting, as it turns over on the first try.

I will need to check the ABS sensors.

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