how to fix the AC not blowing cold air in my Tesla Outback 5th Generation (2015-2019)

Subaru Outback 5th Generation (2015-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

588 words

Problem Statement

Learn how to diagnose and fix the AC not blowing cold air in Tesla Outback 2015-2019. 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 systems.
•Handle refrigerants with care; follow all safety guidelines and use appropriate personal protective equipment.

Symptoms

•Air from the AC vents is warm or hot
•AC compressor does not engage
•Unusual noises coming from the AC system
•Visible refrigerant leaks under the vehicle
•Poor airflow from AC vents

Diagnostic Steps

1
Check the AC system settings to ensure it is set to maximum cooling.
2
Inspect the cabin air filter for blockages or restrictions, replacing if necessary.
3
Use an OBD-II scanner to check for any error codes related to the AC system.
4
Inspect the AC compressor for signs of damage or wear.
5
Check refrigerant levels with a pressure gauge to determine if they are low or within specifications.
6
Examine electrical connections to the AC compressor and ensure they are secure.

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
•Refrigerant charging kit
•Pressure gauge
•Multimeter
•Basic hand tools (screwdrivers, wrenches)

Parts Required

•Cabin air filter
•Refrigerant (R-134a or R-1234yf)
•AC compressor relay (if needed)
•AC system sealant (if leaks are present)

Related Faults

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Diagnostic Steps

1
Check the AC system settings to ensure it is set to maximum cooling.
2
Inspect the cabin air filter for blockages or restrictions, replacing if necessary.
3
Use an OBD-II scanner to check for any error codes related to the AC system.
4
Inspect the AC compressor for signs of damage or wear.
5
Check refrigerant levels with a pressure gauge to determine if they are low or within specifications.
6
Examine electrical connections to the AC compressor and ensure they are secure.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the vehicle battery to ensure safety while working on electrical components.
Allow the engine to cool down completely before starting work.

2. Inspect and Replace Cabin Air Filter

Remove the cabin air filter cover, usually located behind the glove compartment.
Take out the old filter and inspect for dirt or blockages.
Install a new, manufacturer-recommended cabin air filter.
Reattach the cover securely.

3. Recharge AC System

Attach the refrigerant charging kit to the AC service ports (high and low side).
Open the valve on the low-pressure side and charge the system with the appropriate refrigerant (R-134a or R-1234yf, depending on the system).
Monitor the pressure gauge to ensure the levels are within specifications.
After recharging, ensure all connections are secure and close the service ports.

4. Test AC Compressor

Reconnect the vehicle battery.
Start the engine and turn on the AC system to maximum cooling.
Use a multimeter to check the voltage at the AC compressor connector.
If no voltage is detected, trace the wiring back to the relay and fuse, replacing any faulty components as necessary.

5. Inspect and Repair Leaks

Use a UV dye or soap solution to check for refrigerant leaks in the system.
If a leak is found, replace the damaged components (e.g., hoses, seals) and recharge the system.
Ensure all repairs are properly sealed to prevent future leaks.