how to fix a Ford F-150 13th Generation (2015-2020) that won't turn over

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

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

535 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 a no-start issue 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 working on the starter motor.

Symptoms

•Ignition key turns but engine does not crank
•No sound from the starter motor
•Dashboard lights illuminate, but no response from the engine
•Possible clicking sound from the starter relay
•Battery warning light may be illuminated

Diagnostic Steps

1
Inspect the battery terminals for corrosion and ensure they are tightly connected.
2
Use a multimeter to check the battery voltage; it should read around 12.6 volts or higher.
3
Test the starter relay by swapping it with another relay of the same type in the fuse box.
4
Check the fuses associated with the starting system for any blown fuses.
5
Use an OBD-II scanner to check for any diagnostic trouble codes that may indicate issues in the starting system.
6
Test the starter motor by applying power directly from the battery to see if it engages.

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

•Socket set
•Multimeter
•Battery terminal cleaner
•Jumper cables

Parts Required

•New battery (if necessary)
•Starter relay (if faulty)
•Starter motor (if defective)

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Diagnostic Steps

1
Inspect the battery terminals for corrosion and ensure they are tightly connected.
2
Use a multimeter to check the battery voltage; it should read around 12.6 volts or higher.
3
Test the starter relay by swapping it with another relay of the same type in the fuse box.
4
Check the fuses associated with the starting system for any blown fuses.
5
Use an OBD-II scanner to check for any diagnostic trouble codes that may indicate issues in the starting system.
6
Test the starter motor by applying power directly from the battery to see if it engages.

Solution

1. Preparation

Gather tools and required parts.
Disconnect the negative battery terminal to ensure safety while working.
Tools Required: Socket set, multimeter, battery terminal cleaner, jumper cables.

2. Battery Inspection and Replacement

Sub-step 1: Clean the battery terminals using a battery terminal cleaner. Ensure they are free from corrosion.
Sub-step 2: If the battery voltage is below 12.6 volts, recharge the battery or replace it if it fails to hold a charge.
Sub-step 3: Reconnect the battery terminals, ensuring a tight fit.

3. Starter Relay and Fuse Check

Sub-step 1: Locate the starter relay in the fuse box and check for continuity using a multimeter.
Sub-step 2: If the relay is faulty, replace it with a new one.
Sub-step 3: Inspect the fuses related to the starting circuit; replace any that are blown.

4. Starter Motor Testing and Replacement

Sub-step 1: If the starter motor did not engage during the direct power test, remove it from the vehicle.
Sub-step 2: Inspect the starter for any physical damage or excessive wear.
Sub-step 3: Install a new starter motor if the old one is defective, ensuring all connections are secure.
Sub-step 4: Torque the starter mounting bolts to the manufacturer’s specifications (usually around 15-20 lb-ft).

5. Final Assembly

Reconnect the negative battery terminal.
Start the vehicle to ensure the repair was successful.