Check brake fluid level at every oil change. Replace fluid according to owner's manual recommendations.
Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
Inspect the brake lines for rust, punctures, or visible leaks (You may be able to do this, but consult a qualified technician if necessary).
Check the thickness of your brake pads.
Inspection of the brake hoses for brittleness or cracking.
Inspection of brake lining and pads for wear or contamination by brake fluid or grease.
Inspection of wheel bearings and grease seals.
Parking brake adjustments (as needed).
Chirping or grinding noises when braking.
Difficulty stopping the vehicle.
A low or sinking brake pedal.
Brake pedal pulsation (not to be confused with normal ABS operation).
Vehicle pulls to the left or right when brakes are applied.