Tune up, and more reading
Brake wear indicators are meant to wear down and make noise to warn the driver that brake repair is necessary. Noise is not the only indicator that brake repair may be necessary. Has your brake light suddenly gone on when your parking brake is disengaged. If you have, take your car right away to a brake repair technician to have your brake fluid level checked; an illuminated light typically indicates that the level is low. If you see a light amber colored liquid pooling underneath your car, chances are that that is leaking brake fluid.