why does my Ford Explorer Fifth Generation (2011-2019) AC blow warm air instead of cold?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

559 words

Problem Statement

Learn how to diagnose and fix AC blowing warm air 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.
•Wear safety goggles and gloves when handling refrigerants.

Symptoms

•AC compressor does not engage
•Unusual noises coming from the AC compressor
•Weak airflow from the vents
•AC system blowing air that is warmer than ambient temperature
•High-pressure reading on the AC system
•Low refrigerant level warning on the dashboard (if equipped)

Diagnostic Steps

1
Check the vehicle's AC system fuse to ensure it is not blown.
2
Use an OBD-II scanner to check for any related error codes.
3
Inspect the AC compressor clutch for proper engagement and functionality.
4
Measure the refrigerant pressure using a manifold gauge set.
5
Look for signs of refrigerant leaks around hoses and connections.
6
Test the cabin air filter for blockages that may 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

•OBD-II scanner
•Multimeter
•Manifold gauge set
•Socket set
•Screwdrivers

Parts Required

•AC compressor (if faulty)
•AC fuse
•Refrigerant (R-134a or R-1234yf)
•Cabin air filter

Related Faults

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Diagnostic Steps

1
Check the vehicle's AC system fuse to ensure it is not blown.
2
Use an OBD-II scanner to check for any related error codes.
3
Inspect the AC compressor clutch for proper engagement and functionality.
4
Measure the refrigerant pressure using a manifold gauge set.
5
Look for signs of refrigerant leaks around hoses and connections.
6
Test the cabin air filter for blockages that may restrict airflow.

Solution

1. Preparation

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

2. Check and Replace AC Fuse

Locate the fuse panel (refer to the owner's manual for exact location).
Remove the AC fuse and inspect it for damage.
If blown, replace it with a new fuse of the same amperage.

3. Inspect and Test AC Compressor

Reconnect the battery.
Start the engine and turn on the AC to the maximum setting.
Use a multimeter to check for voltage at the AC compressor clutch connector.
If there is no voltage, trace the wiring back to the relay and switch for continuity.
If the compressor does not engage, replace the AC compressor.

4. Recharge the AC System

Connect the manifold gauge set to the service ports (high and low side).
If refrigerant levels are low, recover existing refrigerant if necessary.
Recharge the AC system with the specified amount of refrigerant (R-134a or R-1234yf, depending on the model).
Follow the manufacturer's specifications for the correct amount and type of refrigerant.

5. Inspect and Replace Cabin Air Filter

Locate the cabin air filter (typically behind the glove box).
Remove the glove box for easier access.
Take out the old cabin air filter and replace it with a new one.
Reassemble the glove box.