Brake light on

120,000 MILES • 4 CYL • AWD • MANUAL
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WIENER
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2001 Audi A4 Has new rotors and pads, the brake light will not stop blinking, they will not do emissions test with the light blinking
Mar 6, 2011 at 7:09 AM
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CARADIODOC
  • ✓Experienced Mechanic
  • 34,413 POSTS
Do you have anti-lock brakes? Is the light red or yellow?


Check that the parking brake is fully released, check the fluid level in the reservoir, (don't fill it to the top; just be sure it's above the "min" mark. Unplug the pressure-differential valve on the frame under the master cylinder. If that makes the light go off there is a leak or something else causing unequal pressures in the two hydraulic systems.
Mar 6, 2011 at 8:32 AM
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