2000 Toyota Sienna Owners Manual - Page 190

00 SIENNA(U) CAUTION D Do not pump the brake pedal if the engine stalls. Each push on the pedal uses up your reserved vacuum. You may hear a sound and feel a vibration in the engine compartment for a few seconds when the engine is started or just after the vehicle is started. This means that the anti −lock brake system is in the self check mode, and does not indicate a malfunction. Effective way to press the "ABS" brake pedal: When the anti −lock brake system function is in action, you may feel the brake pedal pulsating and hear a noise. In this situation, to let the anti −lock brake system work for you, just hold the brake pedal down more firmly. Do not pump the brake in a panic stop. Pumping the brake pedal makes the stopping distance longer. The brake pedal pulsation caused by the anti −lock brake system may indicate hazardous road surface conditions. Although the anti −lock brake system assists in providing vehicle control, it is still important to drive with all due care, because the anti −lock brake system cannot overcome the laws of physics that act on your vehicle: D Even though the anti−lock brake system is operating, a driver cannot maintain full control on certain slippery road surfaces, when cornering at high speeds, or in violent maneuvers. D Avoid high speeds on wet roads. The anti −lock brake system cannot eliminate the risk of hydroplaning and loss of tire friction. D Even if the power assist is completely lost, the brakes will still work. But you will have to push the pedal hard-much harder than normal. And your braking distance will be longer. ANTI −LOCK BRAKE "ABS" warning light) SYSTEM (with Always maintain a safe distance from the vehicle in front of you. Compared with vehicles not fitted with an anti −lock brake system, your vehicle may require a longer stopping distance in the following cases: D Driving on rough, gravel or snow−covered roads. The anti −lock brake system is designed to automatically help prevent lock −up of the wheels during sudden braking or braking on slippery road surfaces. This assists in providing directional stability and steering performance of the vehicle under these circumstances. The anti −lock brake system becomes operative after the vehicle has accelerated to a speed in excess of approximately 10 km/h (6 mph). It stops operating when the vehicle decelerate to a speed below approximately 5 km/h (3 mph). D Driving with tire chains installed. D Driving on roads where the road surface is pitted or has other differences in surface height. D Braking capability is dependent on tire friction with the road surface. 190