Brake Fluid Leaks

With the engine running at idle and the shift lever in NEUTRAL (N), depress the brake pedal and hold a constant foot pressure on the pedal. If the pedal gradually falls away with the constant pressure, the hydraulic system may be leaking. Visually check the following to confirm a suspected leak.
^ Master Cylinder Fluid Levels. While a slight drop in the levels occurs with normal lining wear, an abnormally low level resulting in the illumination of the BRAKE warning lamp may indicate a leak in the system. The system may be leaking internally or externally. (The system may appear to pass this test, but still have a slight leakage.)
^ Brake Hose and Pipe Connections. If leakage is found, verify the torque of the fasteners and/or replace the hose or the pipe.
^ Connecting Brake Components. Inspect for damage, rebuild or replace as needed.
^ Caliper. If leakage is found, rebuild or replace the assembly.
^ Also, check the service brake pedal travel, brake adjustment and the parking brake adjustment.