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Old 08-18-2009, 07:36 PM   #1
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Brakes on a Boxster S

I've been noticing low brake pedal after getting the car detailed a few weeks back. I have to step on it harder to brake.

Wonder what caused it and what I can do to "fix" it. I have 17,000 miles on the car and I don't brake hard.

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Old 08-19-2009, 10:48 AM   #2
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How long has it been since your last brake fluid flush or bleed?


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Old 08-19-2009, 12:19 PM   #3
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Check each caliper and make sure there are no signs of fluid...something has suddenly created a soft pedal.

As Sboxin recommended, I would flush (if it hasn't been done in a couple years) or at least bleed the system; you'll learn quickly if there is a problem, thereafter.
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Old 08-19-2009, 05:09 PM   #4
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Pop out your pads and sand off the residue left by whatever they sprayed on your rotors.....
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Old 08-19-2009, 06:13 PM   #5
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thanks all.

i have not done a bleed at all. Maybe it's time to do it. I called Porsche today and they think it may be some type of grease that the detailer left on the rotors/pads.

I should try the bleed.
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Old 08-19-2009, 08:50 PM   #6
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Most likely moisture-ridden fluid. Brake fluid will actually pull moisture from the air. That's why there is a 2-yr. service interval on it.

There is also the possibility that your master cylinder is at issue.

No easy check except to swap the fluid and see if things improve. If not, suspect the mc.

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Old 08-21-2009, 08:35 AM   #7
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I hosed down the brakes last nite and it's significantly better now. Maybe it was some grease/chemical that the detailed sprayed on it.
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Old 08-21-2009, 02:55 PM   #8
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Quote:
Originally Posted by Paul
Pop out your pads and sand off the residue left by whatever they sprayed on your rotors.....


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2001 Boxster bought new. Installed used motor at 89k.
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Owned and repaired Porsches since 1974. Have driven them all the way the Dr intended...
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