how to troubleshoot headlights that won't turn on in Ford Explorer Sixth Generation (2020-present)

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

4 min read

608 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 troubleshoot and fix headlights that won't turn on in Ford Explorer Sixth Generation (2020-present). Step-by-step guide with diagnostic procedures.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before opening the hood for safety.

Symptoms

•Headlights do not illuminate when switched on
•Dashboard indicator for headlights is off or malfunctioning
•High beams may not function, while low beams remain inoperative
•No clicking sound from the headlight relay when switch is activated
•Other exterior lights (e.g., tail lights, turn signals) function normally

Diagnostic Steps

1
Inspect the headlight switch for any visible damage or wear.
2
Check the vehicle's fuse box for any blown fuses related to the headlights.
3
Use a multimeter to test the headlight bulbs for continuity.
4
Examine the headlight relay for proper operation by swapping it with a similar relay in the fuse box.
5
Inspect the wiring harness and connectors for corrosion, breaks, or loose connections.
6
Scan the vehicle's onboard computer for any relevant error codes.

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
•Torque wrench
•Flathead screwdriver
•Fuse puller

Parts Required

•Headlight bulbs (if faulty)
•Replacement fuses (if blown)

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Symptoms

•Headlights do not illuminate when switched on

•Dashboard indicator for headlights is off or malfunctioning

•High beams may not function, while low beams remain inoperative

•No clicking sound from the headlight relay when switch is activated

•Other exterior lights (e.g., tail lights, turn signals) function normally

Diagnostic Steps

1
Inspect the headlight switch for any visible damage or wear.
2
Check the vehicle's fuse box for any blown fuses related to the headlights.
3
Use a multimeter to test the headlight bulbs for continuity.
4
Examine the headlight relay for proper operation by swapping it with a similar relay in the fuse box.
5
Inspect the wiring harness and connectors for corrosion, breaks, or loose connections.
6
Scan the vehicle's onboard computer for any relevant error codes.

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, socket set, torque wrench, flathead screwdriver, and a replacement fuse if necessary.
Ensure the vehicle is on a level surface, and the engine is turned off.
Disconnect the battery to prevent any electrical shorts.

2. Check and Replace Fuses

Locate the fuse box: Reference the owner's manual to find the fuse box location.
Remove the cover: Use a flathead screwdriver to gently pry off the cover.
Inspect fuses: Identify the headlight fuse and check if it's blown. Replace with a fuse of the same amperage if necessary.
- Tool Required: Fuse puller (may be included in the fuse box).
Reattach the fuse box cover once done.

3. Inspect and Replace Headlight Bulbs

Access the headlight assembly: Open the hood and locate the back of the headlight assembly.
Remove the headlight bulb: Twist the bulb socket counterclockwise and pull it out.
Test the bulb: Use a multimeter to check for continuity. Replace if faulty.
Install the new bulb: Insert the new bulb into the socket and twist clockwise to secure.

4. Test the Headlight Relay

Locate the relay: Refer to the fuse box diagram for the headlight relay.
Swap the relay: Remove the headlight relay and replace it with a similar one from another circuit in the fuse box.
Test the headlights: Turn on the headlights to see if they function.

5. Inspect Wiring and Connections

Examine wiring: Check the wiring harness connected to the headlight assembly for any visible damage.
Clean connections: If corrosion is present, clean the connectors with an electrical contact cleaner and ensure tight connections.
Repair or replace: If wires are damaged, repair them using appropriate splicing techniques or replace the harness if necessary.