why does my Ford Explorer Fifth Generation (2011-2019) air conditioning blow warm air?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

554 words

Problem Statement

Complete guide to fixing AC that blows warm air in Ford Explorer 2011-2019. Includes symptoms, diagnostic steps, tools required, and repair procedures.

Affected Component

HVAC

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the A/C system to depressurize before servicing to prevent refrigerant leaks.

Symptoms

•Warm air blowing from the A/C vents
•A/C compressor not engaging
•Unusual noises from the A/C system
•A/C Off warning light illuminated
•Foul smell coming from the vents
•Reduced airflow from the vents

Diagnostic Steps

1
Check the A/C system for refrigerant levels using a manifold gauge set.
2
Inspect the A/C compressor for visible damage and listen for unusual noises.
3
Test the A/C system's electrical connections and fuses.
4
Examine the condenser for blockages or damage.
5
Use an OBD-II scanner to check for any fault codes related to the A/C system.
6
Inspect the cabin air filter for clogs or restrictions.

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
•Socket set
•Screwdrivers

Parts Required

•Refrigerant
•A/C compressor (if defective)
•Cabin air filter (if clogged)

Related Faults

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Diagnostic Steps

1
Check the A/C system for refrigerant levels using a manifold gauge set.
2
Inspect the A/C compressor for visible damage and listen for unusual noises.
3
Test the A/C system's electrical connections and fuses.
4
Examine the condenser for blockages or damage.
5
Use an OBD-II scanner to check for any fault codes related to the A/C system.
6
Inspect the cabin air filter for clogs or restrictions.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is parked on a level surface.
Disconnect the battery to ensure safety during repairs.
Tools Required:
- OBD-II scanner
- Manifold gauge set
- Socket set
- Screwdrivers
- Refrigerant (if needed)

2. Check and Refill Refrigerant

Sub-steps:
1. Connect the manifold gauge set to the A/C service ports (high and low).
2. Check the pressure readings. If low, proceed to recharge.
3. Follow manufacturer instructions to add the appropriate type and amount of refrigerant.
4. Disconnect the gauges and run the A/C to check for improvement.

3. Inspect and Replace A/C Compressor

Sub-steps:
1. If the compressor is not engaging, visually inspect the wiring and connections.
2. Remove the serpentine belt from the A/C compressor.
3. Unbolt the compressor from its mounting points, ensuring to capture any remaining refrigerant safely.
4. Install the new compressor, ensuring all connections are secure.
5. Reinstall the serpentine belt and recharge the A/C system.

4. Clean or Replace the Cabin Air Filter

Sub-steps:
1. Locate the cabin air filter compartment (usually behind the glove box).
2. Remove the old filter and check for clogs or debris.
3. Install a new cabin air filter, ensuring proper orientation.

5. Check Electrical Components

Sub-steps:
1. Inspect and replace any blown fuses related to the A/C system.
2. Test the A/C control module and connections with a multimeter to ensure proper function.