| PROBLEM | PROBABLE DEFECT |
| ABS light on. | Possible ABS sensor defect. Obtain specialist advice immediately. |
| Brake pedal 'sinks' slowly while braking. | The brake fluid in the system has absorbed to much water – fluid leak. |
| Unusual noises on braking. | Lining material worn or disc or drum glazed. |
| Vehicle pulls to one side. | Calliper or wheel cylinder sticking or hydraulic seal leaking. |
| Brake pedal pulsates up and down. | Disc or drum warped. |
| Rear wheels lock and skid. | Over adjusted rear brakes. Defective regulating valve. |
| Low, soft and spongy pedal. | Air trapped in hydraulic system or loss of brake fluid. Friction material worn to replacement stage. Rear brakes out of adjustment. |
| Hard pedal. Extended stopping distance. | Brake servo inoperative. |
| Vibration of steering wheel. | High-spot on disc or drum or defective or improperly adjusted wheel bearings. Warped disc. |
| Wheels hard to turn. | Brake pads or shoes not releasing. Calliper not releasing. |
| Fluid on backing plate. | Leaking brake pipe or loose connection. Leaking wheel hydraulic cylinder or leaking hose. |
| Cracks in brake hose or fluid leakage. | Perished or corroded hose cover or pipes. |
| Scored disc / drum. | Critically worn brake pads or discs. |
| Low fluid level in master cylinder. | Leak in hydraulic system. |
| Warm road wheel. | Brake calliper not releasing, brakes over adjusted. Binding brakes. |
If you spot any of the above symptoms, have your vehicle checked at National Tyres and Autocare.