how to fix Ford Explorer Sixth Generation (2020-present) AC not blowing cold air

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

621 words

Problem Statement

Learn how to diagnose and fix AC not blowing cold air in Ford Explorer (2020-present). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

HVAC

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Ensure the system is not under pressure before disconnecting any AC lines.

Symptoms

•Air from vents is warm or at ambient temperature
•AC compressor does not engage
•Unusual noises from the AC system (e.g., hissing or clicking)
•AC Off message displayed on the dashboard
•Poor airflow from the vents

Diagnostic Steps

1
Check for any error codes using an OBD-II scanner to identify potential issues in the AC system.
2
Inspect the AC fuse and relay in the fuse box for damage or failure.
3
Verify that the AC compressor is engaging when the AC is turned on.
4
Check the refrigerant levels using a manifold gauge set to see if it’s low or overcharged.
5
Inspect the AC condenser for blockages or damage that may impede airflow.
6
Look for any visible leaks in the AC lines or around the compressor.

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
•Manifold gauge set
•Refrigerant recovery machine
•Socket set
•Torque wrench
•UV leak detection kit
•Safety glasses
•Gloves

Parts Required

•Refrigerant (R-134a or R-1234yf)
•AC compressor (if applicable)
•O-rings for AC lines
•Cabin air filter

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Diagnostic Steps

1
Check for any error codes using an OBD-II scanner to identify potential issues in the AC system.
2
Inspect the AC fuse and relay in the fuse box for damage or failure.
3
Verify that the AC compressor is engaging when the AC is turned on.
4
Check the refrigerant levels using a manifold gauge set to see if it’s low or overcharged.
5
Inspect the AC condenser for blockages or damage that may impede airflow.
6
Look for any visible leaks in the AC lines or around the compressor.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to ensure safety while working on the electrical components.

2. Recharge the AC System

Tools Required: Manifold gauge set, refrigerant (R-134a or R-1234yf depending on the model), safety glasses, gloves.
Sub-steps:
1. Connect the manifold gauge set to the low and high-pressure service ports on the AC system.
2. Start the engine and turn the AC to maximum cool with the blower on high.
3. Check the pressure readings on the gauges. If the low side is below 30 psi, proceed to recharge.
4. Attach the refrigerant can to the low-pressure side and open the valve to allow refrigerant to flow into the system. Monitor the low-side pressure while recharging.
5. Once the appropriate pressure is reached, disconnect the refrigerant can and manifold gauge.

3. Replace the AC Compressor (if needed)

Tools Required: Socket set, torque wrench, refrigerant recovery machine (if necessary), new compressor, new O-rings.
Sub-steps:
1. Recover the refrigerant from the AC system using a recovery machine if the compressor is being replaced.
2. Remove the drive belt from the AC compressor.
3. Disconnect the electrical connector and the AC lines from the compressor.
4. Unbolt the compressor from its mounting location and remove it from the engine bay.
5. Install the new compressor by reversing the removal steps and ensuring all O-rings are replaced to prevent leaks. Torque bolts to manufacturer specifications.
6. Reconnect the AC lines and electrical connectors, and reattach the drive belt.

4. Check for Leaks

Tools Required: Electronic leak detector or UV dye kit.
Sub-steps:
1. Add UV dye to the AC system if not previously done.
2. Operate the AC system for about 15 minutes.
3. Use the UV light to inspect for leaks at the compressor, evaporator, and all AC lines.