The anti-lock breaking system (ABS) on a Ford F150 pulses the brakes for you in the event of hard braking. Rather than manually pumping the brakes, the ABS system pulses the brakes many times faster than any human being could ever do. This prevents the wheels from locking up and keeps the F150 from skidding across the pavement. This, in turn, helps you to better control the vehicle. If you are having problems with your ABS, however, you’ll want to troubleshoot the problem prior to fixing it.
Turn the ignition to the “II” position.
Check the dash lights. The ABS sensor light should come on for a few seconds, and then go off. If it stays on, then you’ll need to check the ABS system with a visual inspection.