Troubleshooting the 2008 F-150 LCD Mileage Light Not Working Issue

by parker
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The LCD display on your 2008 Ford F-150, which shows the mileage, temperature, and direction you’re facing, has been experiencing issues. It rarely lights up, making it difficult for you to read the information while driving at night. In this article, we will explore the possible causes of this problem and provide potential solutions for you to try.

Possible Causes

There are several reasons why the LCD mileage light on your 2008 Ford F-150 may not be working correctly. Below are a few potential causes:

  1. Faulty Display Unit: The LCD display unit itself may be defective and require replacement.
  2. Loose Wiring Connection: There could be a loose or disconnected wiring connection, preventing the power from reaching the display unit.
  3. Faulty Light Sensor: The light sensor, responsible for detecting ambient light conditions, may be faulty, resulting in incorrect lighting behavior.
  4. Electrical Issue: A problem with the electrical system, such as a blown fuse or a malfunctioning switch, could be affecting the display.

Troubleshooting Steps

Follow these steps to troubleshoot and potentially resolve the issue with your LCD mileage light:

Step 1: Check the Display Settings

  1. Start by confirming that the display brightness setting is not set to the lowest level. Adjust it to a higher setting if necessary.
  2. Additionally, ensure that the display is not set to automatically turn off after a certain period of time. Disable any auto-shutoff functions for the display.

Step 2: Inspect the Wiring Connections

  1. Turn off the vehicle and open the hood.
  2. Locate the wiring harness that connects to the LCD display unit.
  3. Check for any loose or disconnected wires. If you find any, securely reconnect them.
  4. Inspect the wiring for any signs of damage or corrosion. Replace or repair any damaged wires.

Step 3: Test the Light Sensor

  1. Park the vehicle in an area with different lighting conditions, such as a shaded spot or under a streetlight.
  2. Manually cover the light sensor, usually located near the windshield, to simulate low light conditions.
  3. Observe if the LCD display lights up when the light sensor is covered. If it does, there may be an issue with the light sensor that needs to be addressed.

Step 4: Check the Electrical System

  1. Check the fuse box for any blown fuses related to the display or instrument panel. Replace any blown fuses with ones of the correct amperage.
  2. Inspect the light switch for functionality. Ensure that the switch operates smoothly and doesn’t feel loose or sticky. If it does, consider replacing the switch.

Seeking Professional Help

If the above steps do not resolve the issue with your LCD mileage light, it may be necessary to seek assistance from a certified Ford dealer or a professional automotive technician. They will have the expertise and specialized equipment to diagnose and repair the problem accurately.


The LCD mileage light issue on your 2008 Ford F-150 can be frustrating, especially when driving at night. By following the troubleshooting steps outlined in this article, you can potentially identify and address the cause of the problem. However, if the issue persists, it is recommended to consult a professional for further assistance. Ensure a safe and well-lit driving experience by resolving the LCD mileage light not working problem promptly.

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