my Ford F-150 13th Generation (2015-2020) has no heat, how to troubleshoot?

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

598 words

Problem Statement

Learn how to troubleshoot and fix no heat issues in Ford F-150 13th Generation (2015-2020). Step-by-step guide with diagnostic steps and solutions.

Affected Component

HVAC

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.
•Allow the engine to cool fully before opening the coolant system to prevent burns.

Symptoms

•No warm air is coming from the vents
•Temperature gauge reading lower than normal
•Coolant leaks under the vehicle
•Heater core temperature is cold when engine is warm
•Unusual noises from the dashboard area (such as gurgling)
•Check engine light may be illuminated (if related to coolant system)

Diagnostic Steps

1
Check the coolant level in the reservoir and radiator.
2
Inspect for any visible coolant leaks around the hoses, water pump, and heater core.
3
Use an OBD-II scanner to check for any error codes related to the coolant system.
4
Verify the operation of the thermostat by feeling the upper radiator hose for temperature changes after the engine warms up.
5
Check the operation of the heater control valve if equipped.
6
Inspect the cabin air filter for blockage that could restrict airflow.

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
•Screwdrivers
•Pliers
•OBD-II scanner
•Garden hose
•Drain pan

Parts Required

•Thermostat (if faulty)
•Coolant (manufacturer-recommended type)
•Heater hoses (if damaged)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Symptoms

•No warm air is coming from the vents

•Temperature gauge reading lower than normal

•Coolant leaks under the vehicle

•Heater core temperature is cold when engine is warm

•Unusual noises from the dashboard area (such as gurgling)

•Check engine light may be illuminated (if related to coolant system)

Diagnostic Steps

1
Check the coolant level in the reservoir and radiator.
2
Inspect for any visible coolant leaks around the hoses, water pump, and heater core.
3
Use an OBD-II scanner to check for any error codes related to the coolant system.
4
Verify the operation of the thermostat by feeling the upper radiator hose for temperature changes after the engine warms up.
5
Check the operation of the heater control valve if equipped.
6
Inspect the cabin air filter for blockage that could restrict airflow.

Solution

1. Preparation

Gather tools: socket set, screwdrivers, pliers, OBD-II scanner.
Allow the engine to cool completely before starting any work.
Disconnect the battery to prevent any electrical issues.

2. Check Coolant Level

Open the hood and locate the coolant reservoir.
Ensure the coolant is at the proper level; if low, top off with the manufacturer's recommended coolant type.
Inspect the radiator cap for damage; replace if necessary.

3. Inspect for Leaks

Visually check around the engine bay for any signs of coolant leakage.
Use a flashlight to inspect the heater hoses and connections for any signs of wear or leaks.

4. Thermostat Replacement (if faulty)

Drain the coolant from the radiator (using a drain pan).
Remove the thermostat housing (typically held by 2-3 bolts).
Replace the old thermostat with a new one, ensuring correct orientation.
Reassemble the thermostat housing, tightening bolts to manufacturer specifications (usually 15-20 ft-lbs).
Refill the coolant reservoir with the appropriate coolant.

5. Flush the Heater Core (if clogged)

Disconnect the heater core hoses from the engine bay.
Using a garden hose, flush clean water through the heater core to remove any debris or blockage.
Reconnect the hoses and ensure they are secured with clamps.

6. Refill and Bleed the Cooling System

Refill the cooling system with the appropriate mixture of coolant and water.
Start the engine and allow it to reach normal operating temperature, checking for air bubbles in the coolant reservoir.
Squeeze the upper radiator hose to help release trapped air, topping off coolant as needed.