why does my Ford Explorer Fifth Generation (2011-2019) air conditioning only blow hot air

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

551 words

Problem Statement

Complete guide to fixing AC that blows hot 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 engine to cool before opening any components related to the AC system.

Symptoms

•Air conditioning system blows only hot air
•Temperature control settings have no effect on air temperature
•AC compressor may not engage
•Unusual noises from the AC system when activated
•Fog or moisture on the interior windshield

Diagnostic Steps

1
Check the AC refrigerant level using a pressure gauge.
2
Inspect the AC compressor for proper operation and any visible signs of damage.
3
Scan the vehicle's onboard diagnostic system for any error codes related to the HVAC system.
4
Examine the cabin air filter for cleanliness and proper installation.
5
Verify that the blend door actuator is functioning correctly by listening for movement when changing temperature settings.

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

•AC refrigerant gauge
•Refrigerant canister
•Screwdriver or trim removal tool
•Socket set
•Multimeter

Parts Required

•AC refrigerant
•Cabin air filter
•Blend door actuator (if faulty)
•AC compressor (if faulty)

Related Faults

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Diagnostic Steps

1
Check the AC refrigerant level using a pressure gauge.
2
Inspect the AC compressor for proper operation and any visible signs of damage.
3
Scan the vehicle's onboard diagnostic system for any error codes related to the HVAC system.
4
Examine the cabin air filter for cleanliness and proper installation.
5
Verify that the blend door actuator is functioning correctly by listening for movement when changing temperature settings.

Solution

1. Preparation

Gather necessary tools and parts before beginning the repair.
Disconnect the vehicle battery to ensure safety.

2. Recharge the AC System

Tools Required: AC refrigerant gauge, refrigerant canister
Ensure the AC system is off, connect the gauge to the low-pressure service port.
Start the engine and turn the AC on to the maximum setting. Monitor the pressure readings.
If low, add refrigerant according to manufacturer specifications until the system reaches optimal pressure.

3. Inspect and Replace the Cabin Air Filter

Tools Required: Screwdriver or trim removal tool
Locate the cabin air filter access panel (typically behind the glove box).
Remove the panel and take out the old cabin air filter.
Inspect for debris and replace it with a new, clean filter.

4. Check and Replace the Blend Door Actuator

Tools Required: Socket set, screwdriver
Remove the dashboard panel to access the HVAC control unit.
Locate the blend door actuator and check for proper function by observing its movement when adjusting temperatures.
If faulty, disconnect the actuator and replace it with a new unit.

5. Test the AC Compressor

Tools Required: Multimeter
Locate the AC compressor and check the electrical connections for continuity.
If the compressor does not engage, check the AC relay and replace if necessary.
If the compressor is faulty, replace it following the manufacturer's guidelines.