how to troubleshoot my Ford F-150 13th Generation (2015-2020) AC not blowing cold air

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

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

4 min read

671 words

Problem Statement

Learn how to troubleshoot and fix AC not blowing cold air in Ford F-150 (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

HVAC

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems
•Wear safety glasses to protect your eyes

Symptoms

•AC blows warm air instead of cold
•AC compressor does not engage
•Unusual noises when AC is turned on
•AC system cycles on and off frequently
•Increased humidity inside the vehicle

Diagnostic Steps

1
Check AC settings to ensure it is set to 'Max' or 'Cold'
2
Scan for error codes using OBD-II scanner
3
Visually inspect the AC compressor for any signs of damage or leaks
4
Use a refrigerant gauge to check the pressure readings of the AC system
5
Check the fuse and relay related to the AC system for any signs of failure
6
Inspect the cabin air filter to ensure it is not clogged or dirty

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
•Refrigerant gauge
•Multimeter
•Socket set
•Safety glasses

Parts Required

•Cabin air filter
•Refrigerant (R-134a)
•AC compressor (if necessary)
•Fuses/relays (if necessary)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check AC settings to ensure it is set to 'Max' or 'Cold'
2
Scan for error codes using OBD-II scanner
3
Visually inspect the AC compressor for any signs of damage or leaks
4
Use a refrigerant gauge to check the pressure readings of the AC system
5
Check the fuse and relay related to the AC system for any signs of failure
6
Inspect the cabin air filter to ensure it is not clogged or dirty

Solution

1. Preparation

Gather tools: OBD-II scanner, refrigerant gauge, multimeter, socket set, and safety glasses.
Ensure the vehicle is parked on a level surface and the engine is off.

2. Check and Replace Cabin Air Filter

Remove Glove Compartment: Open the glove compartment and remove any contents. Disconnect the damper arm and squeeze the sides to release it from its hinges.
Access Filter Housing: Locate the cabin air filter housing behind the glove compartment.
Replace Filter: Remove the old filter and install a new one, ensuring it is oriented correctly. Reassemble the glove compartment.

3. Recharge Refrigerant

Connect Refrigerant Gauge: Attach the low-pressure side gauge to the service port.
Check Pressure: If the pressure is low, proceed to recharge the system with the appropriate refrigerant (R-134a for this model).
Recharge Process: Follow the manufacturer's guidelines for the amount of refrigerant to add. Start the engine and turn on the AC to circulate refrigerant.

4. Test AC Compressor

Check Power to Compressor: Use a multimeter to verify that the AC compressor is receiving power when the AC is turned on.
Replace Compressor (if necessary): If the compressor is not engaging and there is power, it may need to be replaced. Disconnect the battery, remove the drive belt, and unbolt the compressor from the mounting brackets. Install the new compressor and reconnect all hoses and electrical connections.

5. Inspect and Replace Fuses/Relays

Locate Fuse Box: Refer to the owner's manual to find the location of the fuse box.
Check Fuses: Inspect the AC-related fuses and replace any blown fuses with the same amperage rating.
Test Relays: Swap the AC relay with a similar one (if available) to check if the relay is faulty.