why is my Ford Explorer Fifth Generation (2011-2019) air conditioning not working

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

551 words

Problem Statement

Learn how to diagnose and fix air conditioning issues in Ford Explorer 2011-2019. Step-by-step guide with symptoms, 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 components.
•Allow the engine to cool before servicing the AC compressor to prevent burns.

Symptoms

•No cold air blowing from the vents
•Air conditioner compressor not engaging
•Unusual noises when the AC is turned on
•Foul odor coming from the vents
•Increased cabin humidity
•"AC Off due to High Engine Temp" warning displayed

Diagnostic Steps

1
Check the vehicle's fuse box for any blown fuses related to the AC system.
2
Use an OBD-II scanner to check for any error codes related to the HVAC system.
3
Inspect the AC compressor visually for signs of damage or leaks.
4
Verify the refrigerant level using a manifold gauge set.
5
Test the AC control module and its connections for continuity and proper function.
6
Check the cabin air filter for clogs or obstructions.

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
•Fuse puller or pliers
•Multimeter
•Wrench set
•Safety goggles

Parts Required

•AC compressor (if defective)
•Refrigerant (R-134a)
•Cabin air filter
•AC fuses (if blown)

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Diagnostic Steps

1
Check the vehicle's fuse box for any blown fuses related to the AC system.
2
Use an OBD-II scanner to check for any error codes related to the HVAC system.
3
Inspect the AC compressor visually for signs of damage or leaks.
4
Verify the refrigerant level using a manifold gauge set.
5
Test the AC control module and its connections for continuity and proper function.
6
Check the cabin air filter for clogs or obstructions.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the engine is off.
Disconnect the battery to avoid any electrical issues during repair.

2. Inspect and Replace Blown Fuses

Tools Required: Fuse puller or pliers
Locate the fuse box under the dashboard or in the engine compartment.
Use the fuse puller to remove the AC-related fuse and inspect it for continuity.
Replace any blown fuses with the same amperage rating.

3. Recharge Refrigerant

Tools Required: Manifold gauge set, refrigerant (R-134a), safety goggles
Connect the low-pressure side of the manifold gauge to the low-side service port.
Start the engine and turn on the AC to the maximum setting.
Check the pressure readings and add refrigerant if low, ensuring not to exceed manufacturer specifications.

4. Inspect and Test the AC Compressor

Tools Required: Multimeter, wrench set
Locate the AC compressor and check its electrical connections.
Use a multimeter to test the compressor clutch for proper voltage.
If the clutch does not engage, consider replacing the compressor.

5. Replace Cabin Air Filter

Tools Required: None specific, but a flathead screwdriver may be useful
Open the glove compartment and remove any obstructing panels to access the cabin air filter.
Remove the old filter and install a new one, ensuring it is oriented correctly.
Reassemble any removed panels and the glove compartment.