why do my headlights flicker on my Ford Explorer Fifth Generation (2011-2019) when I drive?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

525 words

Problem Statement

Learn how to diagnose and fix flickering headlights on your Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems
•Allow the engine to cool before handling any components near the engine

Symptoms

•Headlights flicker intermittently while driving
•Dimming of headlights at low RPMs
•Dashboard lights may also flicker or dim
•Increased frequency of flickering with electrical load (e.g., using A/C, radio)
•Possible warning lights illuminated on the dashboard

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any related diagnostic trouble codes (DTCs)
2
Inspect battery condition and connections for corrosion or looseness
3
Check the alternator output using a multimeter to ensure proper voltage (should be around 13.5 to 14.5 volts)
4
Examine the wiring harness and connectors leading to the headlights for any signs of damage or wear
5
Test the headlight relay and fuses for integrity and proper functioning
6
Inspect the headlight bulbs for proper seating and any signs of failure

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
•Basic hand tools
•Wire brush or terminal cleaner

Parts Required

•Headlight relay (if faulty)
•Alternator (if not functioning properly)
•Headlight bulbs (if burned out)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any related diagnostic trouble codes (DTCs)
2
Inspect battery condition and connections for corrosion or looseness
3
Check the alternator output using a multimeter to ensure proper voltage (should be around 13.5 to 14.5 volts)
4
Examine the wiring harness and connectors leading to the headlights for any signs of damage or wear
5
Test the headlight relay and fuses for integrity and proper functioning
6
Inspect the headlight bulbs for proper seating and any signs of failure

Solution

1. Preparation

Gather tools needed: OBD-II scanner, multimeter, socket set, and basic hand tools.
Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Battery Inspection

Sub-step 1: Remove the battery terminal connections (negative first, then positive).
Sub-step 2: Clean any corrosion from the terminals and cable ends using a wire brush or terminal cleaner.
Sub-step 3: Reconnect the terminals securely and ensure they are tight.

3. Alternator Testing

Sub-step 1: Reconnect the battery and start the engine.
Sub-step 2: Use a multimeter to measure the voltage at the battery terminals while the engine is running.
Sub-step 3: If the voltage is below 13.5 volts, replace the alternator.

4. Wiring and Relay Inspection

Sub-step 1: Visually inspect the headlight wiring harness for any frayed wires or loose connections.
Sub-step 2: Remove the headlight relay from the fuse box and test it for continuity with a multimeter.
Sub-step 3: Replace any faulty relays or wiring as necessary.

5. Headlight Bulb Check

Sub-step 1: Remove the headlight assembly according to the manufacturer’s service manual.
Sub-step 2: Check the bulbs for proper installation and replace them if they are faulty or improperly seated.
Sub-step 3: Reinstall the headlight assembly securely.