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my Ford F-150 won't start and the dashboard lights are flickering what's wrong - Ford F-150
Home/Cars/Ford/F-150/13th Generation (2015-2020)/my Ford F-150 won't start and the dashboard lights are flickering what's wrong

my Ford F-150 won't start and the dashboard lights are flickering what's wrong

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

Error Codes
2-4 hours
Time
medium
Difficulty
high
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
604 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Diagnose and fix the no-start issue with flickering dashboard lights in your Ford F-150. Step-by-step guide with diagnostic 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 prevent shock or short circuits.
  • •Allow the engine to cool down before touching components near the engine bay.

Symptoms

  • •Dashboard lights flickering
  • •Engine does not crank or start
  • •Possible clicking noise when attempting to start
  • •Dim headlights
  • •Electrical accessories malfunctioning

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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
  • •Battery terminal cleaner
  • •Wrench set
  • •Battery load tester

Parts Required

  • •New battery (if necessary)
  • •New alternator (if necessary)
  • •New starter motor (if necessary)

Additional Information

Affected Component
Electrical
Estimated Time
2-4 hours
Difficulty
medium
Severity
high
Tools Required
5 items
Parts Required
3 items

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Solution
1. Preparation
  • Gather tools and parts required.
  • Ensure the vehicle is in a safe, well-ventilated area.
  • Disconnect the battery negative terminal to prevent electrical shorts.

Tools Required:

  • Multimeter
  • OBD-II scanner
  • Battery terminal cleaner
  • Wrench set
2. Battery Inspection and Replacement

  1. Inspect Battery Connections

    • Clean any corrosion from battery terminals using a battery terminal cleaner.
    • Tighten the battery connections to ensure a secure fit.

  2. Test Battery Voltage

    • Connect the multimeter to the battery terminals.
    • Check for a reading of approximately 12.6 volts. If under 12 volts, the battery may need replacement.

  3. Load Test the Battery

    • Use a battery load tester to apply a load and check if the battery maintains voltage above 9.6 volts under load.
    • If it fails the load test, replace the battery.
3. Alternator Testing and Replacement

  1. Check Alternator Output

    • Reconnect the battery and start the engine.
    • Measure voltage at the battery with the engine running using the multimeter.
    • If the voltage is outside the range of 13.8 to 14.4 volts, the alternator may require replacement.

  2. Replace Alternator (if necessary)

    • Disconnect the battery negative terminal.
    • Remove the serpentine belt from the alternator.
    • Unplug electrical connectors and remove mounting bolts.
    • Install the new alternator and reconnect all components.
    • Reinstall the serpentine belt.
4. Starter Motor Inspection and Replacement

  1. Inspect Starter Motor

    • Locate the starter motor and inspect for loose connections or damage.
    • If the starter motor is faulty, disconnect the battery and remove it.

  2. Replace Starter Motor (if necessary)

    • Remove electrical connections and mounting bolts from the starter.
    • Install the new starter motor in reverse order of removal.
    • Reconnect the battery and test the starting system.