Brake light on

Tiny
WIENER
  • MEMBER
  • 2001 AUDI A4
  • 4 CYL
  • AWD
  • MANUAL
  • 120,000 MILES
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
Sunday, March 6th, 2011 AT 3:09 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 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.
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Sunday, March 6th, 2011 AT 4:32 PM

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