my Ford F-150 13th Generation (2015-2020) dashboard lights are flickering what's happening

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

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

544 words

Problem Statement

Learn how to diagnose and fix flickering dashboard lights in Ford F-150 13th Generation. 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 the battery before working on electrical systems to avoid shocks or shorts.
•Ensure the vehicle is turned off and cooled down before inspecting components.

Symptoms

•Dashboard lights flickering intermittently
•Dim or bright variations in gauge illumination
•Possible accompanying electrical issues (e.g., power windows, radio)
•Check engine light illuminated (if related to electrical system)
•Battery warning light may appear

Diagnostic Steps

1
Inspect the battery terminals for corrosion and ensure they are tightly connected.
2
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the electrical system.
3
Examine the fuses related to the dashboard lighting for any blown fuses.
4
Test the alternator output to ensure it is providing the correct voltage.
5
Visually inspect the wiring harnesses connected to the dashboard for any signs of damage or loose connections.
6
Check the dimmer switch for any malfunction or irregularities.

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
•Wrench set
•Fuse puller or pliers
•Battery terminal cleaner

Parts Required

•Replacement fuses (if any are blown)
•Alternator (if testing shows failure)

Related Faults

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Diagnostic Steps

1
Inspect the battery terminals for corrosion and ensure they are tightly connected.
2
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the electrical system.
3
Examine the fuses related to the dashboard lighting for any blown fuses.
4
Test the alternator output to ensure it is providing the correct voltage.
5
Visually inspect the wiring harnesses connected to the dashboard for any signs of damage or loose connections.
6
Check the dimmer switch for any malfunction or irregularities.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to avoid electrical shorts.
Ensure the vehicle is on a level surface and safely secured with wheel chocks.

2. Inspect Battery and Connections

Tools Required: Wrench set, battery terminal cleaner.
Clean any corrosion from the battery terminals using a terminal cleaner.
Tighten the battery terminals securely to ensure proper connection.

3. Check and Replace Fuses

Tools Required: Fuse puller or pliers.
Locate the fuse box (usually under the dashboard or in the engine bay).
Identify the fuses associated with the dashboard lights.
Remove the fuses and inspect for continuity; replace any blown fuses with the same amperage rating.

4. Test Alternator Output

Tools Required: Multimeter.
Reconnect the battery terminal.
Start the engine and set the multimeter to the DC voltage setting.
Measure the voltage at the battery terminals; it should read between 13.7 to 14.7 volts.
If the reading is outside this range, consider replacing the alternator.

5. Inspect Wiring and Dimmer Switch

Tools Required: Visual inspection tools, multimeter.
Check the wiring harness connected to the dashboard for frays, breaks, or loose connections.
Test the dimmer switch for functionality; replace if faulty.