http://ford-trucks.com/how-tos is the leading Ford F-150 and Super Duty truck resource for technical DIY guides. Diagnose the reason behind a triggered ABS light in your Ford truck. For the full step-by-step article, please visit http://www.ford-trucks.com/how-tos/a/ford-f150-f250-why-is-my-abs-light-on-356396
Most of us don't see an Anti-lock Braking System light stay on very often. But when we do, it's a situation that needs quick attention. The ABS system is a marvel of model technology that tells your Ford F-150 or Super Duty to not go into a skid when it has a panic stop. It also increases vehicle control and decreases braking distance. When the ABS light is on, it's telling you that it's not working properly. Here are a few tips to help you find out why your ABS light stays on.
Step One - Check the brake lights and fluids
Many times, the problem can be solved at this step. The ABS light could go on just because your brake fluid is a little low.
Check your brake fluid level. If it's below "Minimum," top it up to "Maximum."
Have a friend help you check that your brake lights are working.
Step Two - Check the ABS fuse
The ABS light staying on could be due to a faulty fuse. Refer to your owner's manual for the fuse diagram when looking at the underhood fuse box. Replace the ABS fuse if it’s blown.
Step Three - Check the ABS sensors
The ABS sensors are located on the back of the drums on the rear brakes. If you have rear disc brakes, they are on the steering knuckle.
Use a Torx E8 socket to remove the sensor mounting bolt. Then remove the sensor and clean it with WD-40.
Hose down the tone rings if they are dirty.
Step Four - Check common fault codes
If the previous diagnostic steps haven’t resolved the ABS light issue, connect an OBD code reader to see any codes that are detected.
Knowing the diagnostic code will help you determine the underlying issue.
