how to fix the rear air conditioning not working in my Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

538 words

Problem Statement

Learn how to diagnose and fix rear A/C not working 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.
•Handle refrigerants with care; follow environmental regulations.

Symptoms

•No airflow from rear air vents
•Rear air conditioning control panel unresponsive
•Warm air blowing from rear vents
•Unusual noises from the rear A/C system when activated
•Front air conditioning working normally while rear is not

Diagnostic Steps

1
Inspect the rear A/C control panel for power and functionality.
2
Check the fuse for the rear A/C system in the fuse box.
3
Use an OBD-II scanner to check for any related error codes.
4
Inspect the rear A/C blower motor for proper operation.
5
Examine the rear A/C lines for leaks or blockages.
6
Verify that the refrigerant level is adequate in the system.

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
•Fuse puller or pliers
•Refrigerant gauge set
•Trim removal tool

Parts Required

•Rear A/C control panel (if faulty)
•Rear A/C blower motor (if faulty)
•15A fuse (if blown)

Related Faults

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Diagnostic Steps

1
Inspect the rear A/C control panel for power and functionality.
2
Check the fuse for the rear A/C system in the fuse box.
3
Use an OBD-II scanner to check for any related error codes.
4
Inspect the rear A/C blower motor for proper operation.
5
Examine the rear A/C lines for leaks or blockages.
6
Verify that the refrigerant level is adequate in the system.

Solution

1. Preparation

Gather the necessary tools and parts.
Disconnect the negative battery terminal to prevent electrical shock.
Ensure the vehicle is in a safe, ventilated area.

2. Check and Replace Fuse

Locate the fuse box, typically under the dashboard or in the engine compartment.
Identify the fuse for the rear A/C system using the diagram on the cover.
Remove the fuse using a fuse puller or pliers.
Inspect the fuse for continuity, and replace it if blown (15A or as specified).

3. Inspect and Replace Rear A/C Control Panel

Remove the panel from the rear A/C controls by gently prying it off with a trim tool.
Disconnect the electrical connector behind the panel.
Test the panel with a multimeter for functionality; replace if faulty.

4. Check and Replace Rear A/C Blower Motor

Access the rear A/C blower motor, typically located under the rear seat or in the cargo area.
Disconnect the electrical connector from the blower motor.
Test the motor with a multimeter; if it does not operate when powered directly, replace it.
Install the new blower motor by reversing the removal steps.

5. Inspect Refrigerant Level

Connect a refrigerant gauge set to the rear A/C service port.
Check the refrigerant level; if low, add R-134a refrigerant to the specified level.
Monitor for any signs of leaks during this process.