how to troubleshoot Ford Explorer Sixth Generation (2020-present) AC not cooling

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

633 words

Problem Statement

Learn how to troubleshoot and fix AC not cooling in Ford Explorer Sixth Generation. Step-by-step guide with diagnostic steps 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
•Always wear safety glasses and gloves when handling refrigerants and AC components

Symptoms

•Cabin air is warm or hot even when AC is set to maximum cool
•AC compressor does not engage or turns on intermittently
•Unusual noises coming from the AC system (such as hissing or rattling)
•Check engine light illuminated (if related to the AC system)
•Foul odor from the AC vents
•Reduced airflow from the vents

Diagnostic Steps

1
Inspect AC settings to ensure it is set to the correct temperature and mode
2
Scan for error codes using OBD-II scanner
3
Check refrigerant level using a manifold gauge set
4
Inspect AC compressor for signs of damage or leaks and ensure it engages
5
Test AC relay and fuses for continuity and functionality
6
Examine cabin air filter and replace if 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
•Manifold gauge set
•Multimeter
•Socket set
•Torque wrench
•Vacuum pump

Parts Required

•Refrigerant (R-134a or R-1234yf)
•AC compressor (if replacement is necessary)
•Cabin air filter (if replacement is necessary)

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Symptoms

•Cabin air is warm or hot even when AC is set to maximum cool

•AC compressor does not engage or turns on intermittently

•Unusual noises coming from the AC system (such as hissing or rattling)

•Check engine light illuminated (if related to the AC system)

•Foul odor from the AC vents

•Reduced airflow from the vents

Diagnostic Steps

1
Inspect AC settings to ensure it is set to the correct temperature and mode
2
Scan for error codes using OBD-II scanner
3
Check refrigerant level using a manifold gauge set
4
Inspect AC compressor for signs of damage or leaks and ensure it engages
5
Test AC relay and fuses for continuity and functionality
6
Examine cabin air filter and replace if clogged or dirty

Solution

1. Preparation

Gather tools and parts required, including an OBD-II scanner, manifold gauge set, multimeter, and replacement refrigerant (if needed).
Ensure the vehicle is parked on a level surface, and the engine is off.

2. Check Refrigerant Level

Sub-step 1: Connect the high and low side gauges of the manifold gauge set to the AC service ports.
Sub-step 2: Start the engine and turn on the AC to maximum cool, and monitor the pressure readings.
Sub-step 3: If low, evacuate the system using a vacuum pump, then recharge it with the specified amount and type of refrigerant (usually R-134a or R-1234yf, check the owner’s manual for specifics).

3. Inspect and Replace AC Compressor (if needed)

Sub-step 1: Disconnect the negative battery terminal to ensure safety.
Sub-step 2: Remove any components obstructing access to the AC compressor (e.g., air intake duct).
Sub-step 3: Disconnect the electrical connector and refrigerant lines from the compressor.
Sub-step 4: Unbolt the compressor from its mounting bracket and remove it.
Sub-step 5: Install the new compressor, ensuring all seals and O-rings are properly lubricated and in place, and reconnect refrigerant lines and electrical connectors.
Sub-step 6: Recharge the AC system with refrigerant.

4. Test AC System

Sub-step 1: Reconnect the negative battery terminal.
Sub-step 2: Start the engine and turn the AC on to check if the compressor engages and the cabin cools down.
Sub-step 3: Monitor for unusual noises or leaks during operation.