what to check when my Ford F-150 13th Generation (2015-2020) won't start in cold weather?

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

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

558 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 condition in your Ford F-150 (2015-2020) during cold weather. 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 the battery before working on electrical systems.
•Allow the engine to cool before inspecting the oil or any engine components.

Symptoms

•Engine cranks slowly or not at all
•Dashboard lights may dim or flicker
•Clicking sound from the starter motor
•No response when turning the key or pressing the start button
•Check engine light illuminated (if applicable)
•Decreased battery performance in cold temperatures

Diagnostic Steps

1
Check the battery voltage using a multimeter; it should read around 12.6 volts or higher.
2
Inspect battery terminals for corrosion or loose connections.
3
Test the starter motor by bypassing the ignition system to see if it engages.
4
Examine the fuel system for proper fuel pressure, especially if the fuel pump is not priming.
5
Check the engine oil viscosity to ensure it’s suitable for cold temperatures.
6
Scan for error codes using an OBD-II scanner to identify any underlying issues.

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
•Wire brush
•Socket set
•Fuel pressure gauge
•Oil wrench
•Oil catch pan

Parts Required

•New battery (if necessary)
•Starter motor (if necessary)
•Fuel filter (if necessary)
•Engine oil (if necessary)

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Diagnostic Steps

1
Check the battery voltage using a multimeter; it should read around 12.6 volts or higher.
2
Inspect battery terminals for corrosion or loose connections.
3
Test the starter motor by bypassing the ignition system to see if it engages.
4
Examine the fuel system for proper fuel pressure, especially if the fuel pump is not priming.
5
Check the engine oil viscosity to ensure it’s suitable for cold temperatures.
6
Scan for error codes using an OBD-II scanner to identify any underlying issues.

Solution

1. Preparation

Ensure the vehicle is in park (automatic) or neutral (manual) with the parking brake engaged.
Gather necessary tools and parts.

2. Battery Inspection and Replacement

Sub-steps:
1. Disconnect the negative battery cable first, followed by the positive cable.
2. Clean the terminals with a wire brush until shiny.
3. Reconnect the positive cable first, then the negative cable.
4. If the battery voltage is below 12.4 volts, consider replacing the battery.
Tools Required: Multimeter, wire brush, socket set.

3. Starter Motor Check

Sub-steps:
1. Locate the starter motor under the vehicle.
2. Use a multimeter to check the voltage at the starter solenoid while attempting to start the vehicle.
3. If no voltage is present, trace the wiring back to the ignition switch and check for continuity.
4. If voltage is present but the starter doesn't engage, replace the starter motor.
Tools Required: Socket set, multimeter.

4. Fuel System Verification

Sub-steps:
1. Locate the fuel pump relay and ensure it's functioning.
2. Check the fuel pressure at the fuel rail using a fuel pressure gauge.
3. If fuel pressure is low, check for a clogged fuel filter or failing fuel pump.
Tools Required: Fuel pressure gauge, socket set.

5. Engine Oil Check

Sub-steps:
1. Check the engine oil level and condition using the dipstick.
2. If the oil is too thick for cold weather or low, replace it with the appropriate viscosity oil.
Tools Required: Oil wrench, oil catch pan.