1996 Ford Explorer Owner's Manual - Page 262

Rear Disc Brakes The rear disc brakes are self-adjusting. They do not require any service other than periodic inspection for pad wear. Hydraulic Power Brakes The hydraulic brake system is made up of two independent hydraulic circuits. One hydraulic circuit supplies fluid to the front disc brakes and the other hydraulic circuit supplies fluid to the rear drum or disc brakes. These two circuits are supplied by a common hydraulic brake fluid reservoir, with a fluid level sensor. The brake light in the instrument cluster will light for low brake fluid in the common brake fluid reservoir. RWARNING An increase in pedal travel will result in reduced braking capability. The brake system should be checked immediately. Four Wheel Anti-lock Brake System Your vehicle is equipped with a Four Wheel Anti-lock Braking System (4WABS). The 4WABS helps the driver to maintain vehicle control by preventing wheel lockup during hard braking. The 4WABS operates with a computer that is able to optimize vehicle control during braking on varying tire and road conditions by modulating the brake pressure at each of the front wheels and the rear axle. This "pumping action" is similar to the driver "pumping" the brakes but happens at a much faster rate. 262