1996 Ford Aerostar Owner's Manual - Page 175

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 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. Rear Anti-lock Brakes Your vehicle is equipped with a rear Anti-lock Brake System (ABS). This system prevents at least one and often both rear wheels from completely locking up when the brakes are applied in a panic stop, for example. Even with the Anti-lock Brake System, you should be careful when braking. Front brake lock up on any surface, even on smooth pavement causes loss of steering control. Heavy braking on roads with loose surfaces such as snow or gravel, or severe pavement irregularities could also cause you to lose steering control of your vehicle. 194