COMPONENTS OF YOUR BRAKE SYSTEMS THAT SHOULD BE CHECKED OR SERVICED:
Brake pads. This is the most common item to be replaced on a brake system. Made of metallic or ceramic substances, pads are squeezed against the brake rotor, causing the vehicle to slow and stop. Brakes pads should have a useful life of 30,000 to 50,000 miles. How long pads last depends on a number of factors, including the shape of the brake system, whether miles are local or highway and the driving habits of the owner.
Brake Rotors. The rotor is a round, flat metallic disc attached to the wheel hub. To stop the vehicle, the pads are squeezed against the rotor. If a rotor contains grooves or is out of shape, sometimes it can be smoothed with a special lathe. Normally a rotor should last 100,000 miles or more. If the rotor is damaged extensively, it can be replaced when the brakes are serviced.
ABS System. The Anti-lock Braking System operates in slippery conditions and prevents skidding. When the vehicle wheels begin to lock, the system automatically pumps the brakes, keeping the pads from locking onto the rotor. During routine maintenance, the electrical connections are inspected and cleaned. If there are bad wires or connectors, they can be replaced during servicing.
Brake lines. The brake lines are thin metal tubes that carry brake fluid to the calipers. Near each wheel, the line is connected to a hard rubber, flexible hose. During servicing, the lines can be inspected for leaking. No vehicle should be driven with a leaking brake line, as it can cause a system failure. Brake lines often last the life of the vehicle. Flexible hoses may have to be replaced between 50,000 and 100,000 miles.