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

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

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

535 words

Problem Statement

Learn how to diagnose and fix flickering dashboard lights in Ford F-150 (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow engine to cool before inspecting wiring near the engine compartment.

Symptoms

•Flickering dashboard lights
•Dim or inconsistent brightness of dashboard illumination
•Possible accompanying electrical issues (e.g., radio resets, power window malfunctions)
•Check engine light may illuminate intermittently
•Battery warning light may appear on the dashboard

Diagnostic Steps

1
Inspect the battery terminals for corrosion or loose connections.
2
Check the condition of the battery and test its voltage using a multimeter.
3
Scan the vehicle for error codes using an OBD-II scanner.
4
Inspect the fuses related to the dashboard and lighting systems.
5
Examine the wiring harness and connectors for any signs of wear or damage.
6
Test the alternator output while the engine is running to ensure it is functioning correctly.

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
•Socket set
•Wire brush
•OBD-II scanner

Parts Required

•Replacement battery (if necessary)
•Replacement fuses (if blown)
•Wiring connectors (if damaged)

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Diagnostic Steps

1
Inspect the battery terminals for corrosion or loose connections.
2
Check the condition of the battery and test its voltage using a multimeter.
3
Scan the vehicle for error codes using an OBD-II scanner.
4
Inspect the fuses related to the dashboard and lighting systems.
5
Examine the wiring harness and connectors for any signs of wear or damage.
6
Test the alternator output while the engine is running to ensure it is functioning correctly.

Solution

1. Preparation

Gather all necessary tools and parts before beginning the repair.
Ensure the vehicle is parked on a level surface and the engine is turned off.
Disconnect the negative battery terminal to prevent electrical shock.

2. Inspect Battery and Terminals

Sub-steps:
1. Remove the negative battery terminal using a socket wrench.
2. Clean any corrosion from the battery terminals with a wire brush.
3. Tighten the terminal connections to ensure a secure fit.
4. Reconnect the negative battery terminal.

3. Test Battery Voltage

Sub-steps:
1. Use a multimeter to measure the voltage at the battery terminals.
2. A healthy battery should read between 12.4 to 12.7 volts when the engine is off.
3. If the voltage is low, consider replacing the battery.

4. Check Fuses

Sub-steps:
1. Locate the fuse box under the dashboard and/or in the engine compartment.
2. Remove the fuses related to the dashboard lighting (refer to the owner’s manual).
3. Inspect each fuse for continuity; replace any blown fuses.

5. Inspect Wiring and Connectors

Sub-steps:
1. Visually inspect the wiring harness for frayed wires or loose connections.
2. Look for any moisture or debris in the connectors.
3. Repair or replace damaged wiring or connectors as necessary.

6. Test Alternator Output

Sub-steps:
1. Start the engine and use a multimeter to measure the voltage at the battery terminals.
2. The reading should be between 13.8 to 14.5 volts when the engine is running.
3. If the voltage is outside this range, consider replacing the alternator.

Tools Required:

Multimeter
Socket set
Wire brush
OBD-II scanner

Parts Required:

Replacement battery (if necessary)
Replacement fuses (if blown)
Wiring connectors (if damaged)

Estimated Repair Time: 1-3 hours

Safety Warnings:

Disconnect battery before working on electrical systems.
Allow engine to cool before inspecting wiring near the engine compartment.