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Old 05-08-2023, 03:52 PM   #1
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PMS OFF/ABS Light

So I have a crazy gremlin going on that I can't figure out. Both lights come on randomly. Sometimes within a few blocks, sometimes within a few miles, and sometimes never. I have replaced the following: MAF, brake light sensor, fuel filter, air filter, oil change, AOS, plugs, coil packs, and tubes. I can turn off the PMS, and the ABS has yet to come on when the ABS is turned off. Has anyone experienced a bad PMS switch, or have any other ideas? Thanks in advance.

2001 Boxster Base 164k miles.


Last edited by allen.hill; 05-08-2023 at 03:57 PM.
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Old 05-08-2023, 08:12 PM   #2
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Might be a wheel speed sensor.

If you can get a diagnostic tool that will read the abs system, then you should be able to tell.
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Old 05-09-2023, 03:52 AM   #3
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Quote:
Originally Posted by allen.hill View Post
So I have a crazy gremlin going on that I can't figure out. Both lights come on randomly. Sometimes within a few blocks, sometimes within a few miles, and sometimes never. I have replaced the following: MAF, brake light sensor, fuel filter, air filter, oil change, AOS, plugs, coil packs, and tubes. I can turn off the PMS, and the ABS has yet to come on when the ABS is turned off. Has anyone experienced a bad PMS switch, or have any other ideas? Thanks in advance.

2001 Boxster Base 164k miles.
I know, I know It's almost 5... but I'm just not going to.

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