2000 Ford Focus Owner's Manual - Page 130

Driving ABS warning lamp (if equipped) The ABS warning lamp in the instrument cluster momentarily illuminates when the ignition is turned on and the engine is off. 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 brake system is disabled and normal braking is still effective unless the brake warning light also remains illuminated with parking brake released. If the ABS and/or brake warning lights illuminate when the engine is on and the parking brake is in the fully off position, have your vehicle serviced immediately. 130