how to fix Ford F-150 13th Generation (2015-2020) engine coolant temperature warning

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

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

553 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 engine coolant temperature warning in Ford F-150 (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Cooling System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool completely before opening the radiator or removing any coolant components.
•Wear safety goggles and gloves when handling coolant, as it can be toxic.

Symptoms

•Engine coolant temperature warning light illuminated
•Engine overheating
•Coolant leaks under the vehicle
•Poor heater performance
•Increased engine noise
•Engine stalling or loss of power

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related trouble codes.
2
Check coolant level in the reservoir and radiator to determine if low coolant is the cause.
3
Inspect for visible coolant leaks around hoses, radiator, and water pump.
4
Test the operation of the thermostat by checking if the engine reaches operating temperature.
5
Examine the radiator and cooling fans for proper function and any obstructions.
6
Check the engine coolant temperature sensor for proper resistance using a multimeter.

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
•Torque wrench
•Gasket scraper

Parts Required

•Engine coolant (appropriate type)
•Thermostat (if faulty)
•Engine coolant temperature sensor (if faulty)
•Coolant hoses (if damaged)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related trouble codes.
2
Check coolant level in the reservoir and radiator to determine if low coolant is the cause.
3
Inspect for visible coolant leaks around hoses, radiator, and water pump.
4
Test the operation of the thermostat by checking if the engine reaches operating temperature.
5
Examine the radiator and cooling fans for proper function and any obstructions.
6
Check the engine coolant temperature sensor for proper resistance using a multimeter.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the battery negative terminal for safety.

2. Coolant Level Check

Open the hood and locate the coolant reservoir.
If the coolant level is low, add the appropriate type of coolant (typically a 50/50 mix of antifreeze and distilled water).

3. Inspect for Leaks

Visually inspect all hoses, the radiator, and the water pump for coolant leaks.
Replace any damaged hoses or components as necessary.

4. Thermostat Replacement (if faulty)

Tools Required: Socket set, torque wrench, gasket scraper
Remove the thermostat housing by loosening the bolts.
Remove the old thermostat and clean the mating surfaces.
Install the new thermostat with the correct orientation.
Reattach the thermostat housing and torque bolts to the manufacturer's specifications.

5. Engine Coolant Temperature Sensor Replacement (if faulty)

Locate the engine coolant temperature sensor, typically near the thermostat housing.
Disconnect the electrical connector and remove the sensor using a socket.
Install the new sensor and reconnect the electrical connector.

6. Refill and Bleed Cooling System

Refill the coolant reservoir with the appropriate coolant mixture.
Start the engine and allow it to reach operating temperature, monitoring for air bubbles in the coolant.
Once the air is bled out, check the coolant level again and top off if necessary.