why do my Ford F-150 13th Generation (2015-2020) brake lights stay on

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

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

494 words

Problem Statement

Learn how to diagnose and fix brake lights that stay on in Ford F-150 (2015-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems to prevent shocks or shorts.

Symptoms

•Brake lights stay on continuously
•Potentially dead battery due to lights remaining active
•Brake pedal feels stuck or does not return to the resting position
•Warning light on the dashboard related to brake system
•Unusual clicking noise from the brake switch area

Diagnostic Steps

1
Inspect the brake pedal position for obstruction or binding.
2
Check the brake light switch for proper alignment and function.
3
Use an OBD-II scanner to check for any related error codes.
4
Test the brake light switch with a multimeter to ensure it is functioning correctly.
5
Examine the wiring and connectors associated with the brake light system for damage or corrosion.

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
•Multimeter
•Socket set

Parts Required

•Brake light switch (if faulty)
•Wiring harness (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect the brake pedal position for obstruction or binding.
2
Check the brake light switch for proper alignment and function.
3
Use an OBD-II scanner to check for any related error codes.
4
Test the brake light switch with a multimeter to ensure it is functioning correctly.
5
Examine the wiring and connectors associated with the brake light system for damage or corrosion.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure vehicle is parked on a level surface and the ignition is off.
Disconnect the negative battery terminal to avoid electrical shorts.

2. Inspect Brake Pedal

Remove any obstructions that may be preventing the brake pedal from returning fully.
Check for any visible signs of damage to the pedal assembly.

3. Check Brake Light Switch

Locate the brake light switch, usually mounted near the top of the brake pedal.
Tools Required: Socket set.
Remove the switch by unscrewing it from its mounting point.
Inspect the switch for wear or damage; replace if necessary.
Reinstall the switch and ensure it is properly aligned with the brake pedal.

4. Test Brake Light Switch

Tools Required: Multimeter.
Set the multimeter to continuity mode.
Disconnect the switch connector and test the terminals of the switch.
Press the switch manually to see if it opens and closes correctly. If it fails the test, replace the switch.

5. Check Wiring and Connectors

Inspect the wiring leading to the brake light switch and brake lights for any signs of wear or fraying.
Repair or replace damaged wiring and ensure all connectors are secure and free from corrosion.