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

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

604 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 components
•Handle refrigerants with care; they can be hazardous to health

Symptoms

•Warm air blowing from the AC vents
•AC system does not cool down cabin temperature
•Strange noises from the AC compressor when engaged
•AC system cycles on and off frequently
•"AC Off" warning displayed on the climate control screen

Diagnostic Steps

1
Scan for error codes using OBD-II scanner
2
Check refrigerant level using manifold gauge set
3
Inspect AC compressor operation to see if clutch engages
4
Examine AC fuses and relays for faults
5
Inspect electrical connections for loose or damaged wiring
6
Check cabin air filter for blockages

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
•Torque wrench
•Refrigerant recovery system
•Screwdriver

Parts Required

•Refrigerant (R-134a or R-1234yf as applicable)
•New AC compressor (if needed)
•Cabin air filter

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Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to ensure safety.
Allow the vehicle to sit for a few minutes for any residual pressure to disperse.

2. Recharge Refrigerant

Tools Required: Manifold gauge set, refrigerant canister, safety glasses, gloves
Connect the manifold gauge set to the low and high-pressure service ports.
Check the pressure levels; if low, proceed to add refrigerant.
Start the vehicle and run the AC on maximum.
Open the refrigerant canister valve slowly and allow refrigerant to flow into the system until the correct pressure is reached (typically 30-40 PSI for low side and 200-250 PSI for high side).
Disconnect the manifold gauge set and securely close the refrigerant canister.

3. Inspect and Replace AC Compressor

Tools Required: Socket set, torque wrench, screwdriver, refrigerant recovery system
If the compressor is not engaging, remove the drive belt by loosening the tensioner with a socket wrench.
Disconnect the electrical connector and refrigerant lines from the compressor.
Unbolt the compressor from the mounting bracket.
Install the new compressor by reversing the removal steps. Ensure to torque bolts to manufacturer specifications.
Recharge the AC system with refrigerant using the recovery system.

4. Check and Replace Cabin Air Filter

Tools Required: Screwdriver (if necessary)
Locate the cabin air filter access panel (usually behind the glove box).
Remove the panel and pull out the old cabin air filter.
Install a new cabin air filter, ensuring correct orientation.
Reattach the access panel.