ABS light on a 2004 Mercury Mountaineer. How do I fix it?
Go to Autozone or Oreillys and see if they have a scanner for the ABS system. They usually scan for free. The ABS will measure braking problems and things like worn brake linings and debris on wheel sensors. You would want to verify the code light and then have the lining visually inspected. There can be problems with the emergency brakes which require the rear rotors to be removed from the vehicle. Some of the rotors are a problem to remove because of rust.
