how to fix Ford F-150 13th Generation (2015-2020) brake warning light

Ford F-150 13th Generation (2015-2020)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

4 min read

648 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix the brake warning light issue in Ford F-150 13th Generation (2015-2020). Step-by-step guide with symptoms and solutions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow brake components to cool before handling.
•Ensure the vehicle is securely supported on jack stands before working underneath.

Symptoms

•Brake warning light illuminated on the dashboard
•Spongy or soft brake pedal feel
•Unusual noises when braking (squealing or grinding)
•Vehicle pulling to one side while braking
•Increased stopping distance

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any related fault codes.
2
Inspect the brake fluid level in the master cylinder reservoir; ensure it is at the recommended level.
3
Visually inspect the brake pads and rotors for wear and damage.
4
Check the functionality of the brake pedal switch.
5
Inspect brake lines for leaks or damage.
6
Test the parking brake to ensure it is fully disengaged.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Lug wrench
•Jack and jack stands
•Socket set
•Brake caliper tool
•Torque wrench

Parts Required

•Brake pads
•Brake rotors (if needed)
•Brake fluid (DOT 3 or DOT 4)
•Brake pedal switch (if needed)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any related fault codes.
2
Inspect the brake fluid level in the master cylinder reservoir; ensure it is at the recommended level.
3
Visually inspect the brake pads and rotors for wear and damage.
4
Check the functionality of the brake pedal switch.
5
Inspect brake lines for leaks or damage.
6
Test the parking brake to ensure it is fully disengaged.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the parking brake is applied.
Disconnect the battery to prevent any electrical issues while working.

2. Check Brake Fluid Level

Locate the master cylinder reservoir (usually near the back of the engine bay).
Remove the cap and check the fluid level.
If low, top up with the recommended brake fluid type (DOT 3 or DOT 4).

3. Inspect and Replace Brake Pads and Rotors (if necessary)

Remove Wheel:
- Use a lug wrench to loosen the wheel lug nuts.
- Lift the vehicle using a jack and secure with jack stands.
- Remove the wheel.
Inspect Brake Components:
- Check the thickness of the brake pads; replace if below 1/8 inch.
- Inspect rotors for grooves or warping; replace if necessary.
Replace Brake Pads:
- Remove caliper bolts using a socket set.
- Carefully slide the caliper off the rotor.
- Remove old brake pads from the caliper bracket.
- Install new brake pads into the caliper bracket.
Reassemble Caliper:
- Compress the caliper piston using a brake caliper tool.
- Reattach the caliper over the new pads and secure with bolts.
Replace Rotors (if needed):
- Remove rotor retaining screws if applicable.
- Slide the old rotor off the hub.
- Clean the hub surface and install the new rotor.
- Secure it with screws.

4. Check and Replace Brake Switch (if needed)

Locate the brake pedal switch, usually mounted above the brake pedal.
Disconnect the electrical connector from the switch.
Remove the switch from its mounting bracket.
Install the new switch and reconnect the electrical connector.

5. Final Steps

Reconnect the battery.
Replace the wheel and lower the vehicle.
Tighten the lug nuts to the manufacturer's specified torque value (typically 100-150 ft-lbs).