why is my Ford F-150 13th Generation (2015-2020) dashboard lights flickering

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

511 words

Problem Statement

Learn how to diagnose and fix flickering dashboard lights in Ford F-150 13th Generation (2015-2020). Step-by-step guide with diagnostic procedures 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 to avoid shock or short circuits.
•Allow the vehicle to cool down before inspecting any components near the engine.

Symptoms

•Flickering dashboard lights
•Dimming or brightening of lights inconsistently
•Possible accompanying sound of electrical relay clicking
•Intermittent failure of other electrical components (e.g., radio, power windows)
•Warning lights illuminating and extinguishing erratically

Diagnostic Steps

1
Inspect the vehicle's battery for corrosion, loose connections, or low voltage.
2
Use an OBD-II scanner to check for any error codes related to electrical systems.
3
Check fuses and relays associated with the dashboard lights and other electrical components.
4
Test the alternator output while the engine is running to ensure it is charging correctly.
5
Examine the wiring harness for any signs of damage, wear, or short circuits.
6
Verify the ground connections for the dashboard electrical 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
•OBD-II scanner
•Socket set
•Wire brush
•Electrical contact cleaner

Parts Required

•Fuses (if blown)
•Relays (if faulty)
•Alternator (if defective)

Related Faults

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Diagnostic Steps

1
Inspect the vehicle's battery for corrosion, loose connections, or low voltage.
2
Use an OBD-II scanner to check for any error codes related to electrical systems.
3
Check fuses and relays associated with the dashboard lights and other electrical components.
4
Test the alternator output while the engine is running to ensure it is charging correctly.
5
Examine the wiring harness for any signs of damage, wear, or short circuits.
6
Verify the ground connections for the dashboard electrical system.

Solution

1. Preparation

Tools Required: Multimeter, OBD-II scanner, socket set, wire brush, electrical contact cleaner.
Disconnect the negative battery terminal to ensure safety during the repair.

2. Inspect Battery and Connections

Clean any corrosion on battery terminals using a wire brush.
Tighten any loose connections on the battery and check for voltage using a multimeter (should be around 12.6 volts when off, 13.7-14.7 volts when running).

3. Check Fuses and Relays

Remove the fuse box cover and inspect the fuses related to the dashboard lights.
Replace any blown fuses with the same amperage rating.
Test relays using a multimeter or replace them if they appear faulty.

4. Test Alternator

Reconnect the battery and start the engine.
Use a multimeter to measure the voltage at the battery terminals with the engine running. It should read between 13.7 to 14.7 volts.
If the alternator output is below this range, consider replacing the alternator.

5. Examine Wiring and Ground Connections

Visually inspect the wiring harness for frayed wires or loose connections.
Check and clean the ground connections, ensuring they are tight and free of rust or corrosion.
Repair any damaged wiring by splicing in new wire and insulating with heat-shrink tubing.