2005 Ford Expedition Owner's Manual - Page 261

Driving The ABS operates by detecting the onset of wheel lockup during brake applications and compensates for this tendency. The wheels are prevented from locking even when the brakes are firmly applied. Using ABS • In an emergency or when maximum efficiency from the four-wheel ABS is required, apply continuous force on the brake. The four wheel ABS will be activated immediately, thus allowing you to retain steering control of your vehicle and, providing there is sufficient space, will enable you to avoid obstacles and bring the vehicle to a controlled stop. • The anti-lock system does not always reduce stopping distance. Always leave enough room between your vehicle and the vehicle in front of you to stop. • We recommend that you familiarize yourself with this braking technique. However, avoid taking any unnecessary risks. ABS warning lamp The ABS warning lamp in the instrument cluster momentarily ABS illuminates when the ignition is turned on. If the light does not illuminate momentarily at start up, remains on or continues to flash, the ABS needs to be serviced. With the ABS light on, the anti-lock ! P brake system is disabled and normal braking is still effective unless the BRAKE brake warning light also remains illuminated with parking brake released. (If your brake warning lamp illuminates, have your vehicle serviced immediately.) Brake Assist (if equipped) The Brake Assist system provides full braking force during panic braking situations. It detects a rapid application of the brake pedal and maximizes the amount of brake booster assist, helping the driver to achieve maximum braking pressure. Once a panic brake application is detected, the system will remain activated as long as the brake pedal is depressed. The system is deactivated by releasing the brake pedal. When the system activates, the brake pedal will travel with very little effort; this is normal. 261 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus)