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

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

576 words

Problem Statement

Learn how to diagnose and fix the 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

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always wear safety goggles and gloves when working with refrigerants.
•Disconnect the battery before working on electrical components.

Symptoms

•AC compressor not engaging
•Warm air blowing from vents
•Unusual noises from the AC system
•Fluctuating cabin temperature
•Ice buildup on the evaporator or refrigerant lines
•AC warning light illuminated on the dashboard

Diagnostic Steps

1
Check the AC settings to ensure the temperature is set to the coldest setting and the system is in 'Max AC' mode.
2
Inspect the AC compressor for engagement by listening for the click sound when the AC is turned on.
3
Use an OBD-II scanner to check for any trouble codes related to the AC system.
4
Inspect the refrigerant level using a manifold gauge to ensure it is at the correct pressure.
5
Examine the AC condenser for any blockages or physical damage.
6
Check the cabin air filter for clogs 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
•Manifold gauge set
•Screwdriver set
•Refrigerant canister
•Flashlight

Parts Required

•Refrigerant
•Cabin air filter (if necessary)

Related Faults

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Diagnostic Steps

1
Check the AC settings to ensure the temperature is set to the coldest setting and the system is in 'Max AC' mode.
2
Inspect the AC compressor for engagement by listening for the click sound when the AC is turned on.
3
Use an OBD-II scanner to check for any trouble codes related to the AC system.
4
Inspect the refrigerant level using a manifold gauge to ensure it is at the correct pressure.
5
Examine the AC condenser for any blockages or physical damage.
6
Check the cabin air filter for clogs that may restrict airflow.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to prevent any electrical short circuits.
Ensure the vehicle is parked on a level surface and the engine is off.

2. Recharge Refrigerant

Tools Required: Refrigerant canister, manifold gauge set
Connect the manifold gauges to the AC service ports (high and low).
If refrigerant levels are low, follow the instructions on the refrigerant canister to recharge the system.
- Open the low-pressure valve on the manifold gauge while the AC is running.
- Monitor the pressure and ensure it reaches manufacturer specifications.
Disconnect the manifold gauges and securely cap the service ports.

3. Inspect AC Components

Tools Required: Screwdriver set, flashlight
Visually inspect the AC compressor for any physical damage or leaks.
Check the AC condenser for debris; clean if necessary using a soft brush or compressed air.
Assess the wiring and connectors leading to the AC compressor for any signs of wear or corrosion.

4. Replace Cabin Air Filter (if necessary)

Tools Required: None
Locate the cabin air filter compartment (usually behind the glove box).
Remove the old filter and replace it with a new one, ensuring it is installed in the correct orientation.

5. Test the System

Reconnect the battery.
Start the vehicle and turn on the AC to the maximum setting.
Monitor the temperature of the air coming from the vents.