why do my Ford Explorer brake lights stay on when the car is off

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

463 words

Problem Statement

Learn how to diagnose and fix brake lights that stay on in Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems to avoid shock or short circuits.

Symptoms

•Brake lights continuously illuminated
•Battery drain when the vehicle is off
•Potential malfunction indicator light (MIL) on the dashboard
•Brake pedal feels unusually stiff when pressed
•Unusual clicking or buzzing sound from the brake light switch area

Diagnostic Steps

1
Inspect the brake light switch for proper operation and alignment.
2
Check the brake pedal position; ensure it fully returns to the off position.
3
Use a multimeter to test the brake light switch for continuity when the pedal is pressed and released.
4
Examine the wiring harness for any signs of damage or shorts.
5
Scan the vehicle's computer for any error codes related to the lighting system.

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

•Multimeter
•Flathead screwdriver
•Socket set

Parts Required

•New brake light switch

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the brake light switch for proper operation and alignment.
2
Check the brake pedal position; ensure it fully returns to the off position.
3
Use a multimeter to test the brake light switch for continuity when the pedal is pressed and released.
4
Examine the wiring harness for any signs of damage or shorts.
5
Scan the vehicle's computer for any error codes related to the lighting system.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle battery to prevent electrical shock.
Ensure the vehicle is in a safe location with ample space to work.

2. Inspect and Adjust Brake Light Switch

Locate the brake light switch, typically mounted near the top of the brake pedal.
Adjustment: If the switch is misaligned, adjust it so that the pedal fully depresses the switch when the brake is not engaged.
Tools Required: Flathead screwdriver for adjustment.

3. Replace Brake Light Switch (if defective)

Remove the brake light switch by unscrewing or unclipping it from its mount.
Disconnect the wiring harness from the switch.
Install the new switch by connecting the wiring harness and securing it in place.
Parts Required: New brake light switch.

4. Inspect Wiring and Connectors

Visually inspect the wiring for any frayed or damaged insulation.
Repair or replace any damaged wiring as necessary.
Ensure all connectors are clean and free of corrosion.

5. Reconnect Battery and Test

Reconnect the battery terminals securely.
Test the brake lights by pressing the pedal to ensure they turn off when released.