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P993

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About P993

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  • From
    San Francisco
  • Porsche Club
    No
  • Present cars
    1990 964 C4 Black/Black
  1. Yes. Is this something I can ignore? How difficult is it to replace this switch and if you know the part number? Thank you for your help.
  2. I have a 1990 C4. After driving for a while sometimes the Interlock and Brake warning light will simultaneously get activated. The Owner's Manual explain it a s the "pressure reserve is too low". Brake fluid is at Max. Any input into this will be very helpful Thank you.
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