why does my Ford F-150 13th Generation (2015-2020) not start sometimes

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

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

527 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

Learn how to diagnose and fix intermittent starting issues in Ford F-150 (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 battery before working on electrical systems.
•Allow the engine to cool before attempting any repairs.

Symptoms

•Engine cranks but does not start
•No response when turning the key or pressing the start button
•Dashboard lights flicker or dim when attempting to start
•Clicking sound from the starter motor
•Check engine light illuminated intermittently
•Battery warning light on the dashboard

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the battery for proper voltage and connections; ensure terminals are clean and tight.
3
Test the starter motor by bypassing the ignition system with a remote starter switch.
4
Check the fuses related to the ignition and starter circuits for any blown fuses.
5
Measure the voltage at the starter solenoid while attempting to start the vehicle.
6
Inspect wiring for any damage, corrosion, or loose connections in the starter and ignition 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

•OBD-II scanner
•Multimeter
•Socket set
•Ratchet and extensions
•Remote starter switch

Parts Required

•New battery
•Starter motor
•Ignition relay(s)
•Fuses

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any stored trouble codes.
2
Inspect the battery for proper voltage and connections; ensure terminals are clean and tight.
3
Test the starter motor by bypassing the ignition system with a remote starter switch.
4
Check the fuses related to the ignition and starter circuits for any blown fuses.
5
Measure the voltage at the starter solenoid while attempting to start the vehicle.
6
Inspect wiring for any damage, corrosion, or loose connections in the starter and ignition system.

Solution

1. Preparation

Gather tools and ensure safety equipment is ready.
Disconnect the battery negative terminal to prevent electrical shorts.

2. Inspect and Replace Battery

Sub-steps:
1. Test the battery voltage with a multimeter; it should read above 12.4 volts.
2. If voltage is low, charge the battery and re-test.
3. If the battery is more than 3-5 years old or fails to hold a charge, replace it with a new battery (ensure it meets OEM specifications).

3. Check and Replace Starter Motor

Sub-steps:
1. If the starter motor is suspected, remove the starter assembly.
  - Tools: Socket set, ratchet, extension.
2. Inspect the starter for signs of wear or damage.
3. If faulty, replace it with a new starter motor.
4. Reinstall the starter and reconnect all electrical connections.

4. Inspect and Replace Ignition Relay/Fuses

Sub-steps:
1. Locate the fuse box and identify the ignition and starter relays.
2. Remove the relay(s) and test for continuity with a multimeter.
3. Replace any faulty relays with new ones.
4. Check and replace any blown fuses related to the starting system.

5. Reconnect Battery and Test

Reconnect the battery negative terminal.
Attempt to start the vehicle and observe if the issue persists.