why does my Tesla Outback 5th Generation (2015-2019) make a strange noise when the AC is on

Subaru Outback 5th Generation (2015-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

573 words

Problem Statement

Learn how to diagnose and fix strange AC noise in Tesla Outback 5th Generation (2015-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

HVAC

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Ensure refrigerant is properly recovered and handled following safety regulations.

Symptoms

•Unusual rattling or grinding noise when AC is activated
•Noise changes with engine RPM
•Reduced airflow from AC vents
•AC system cycling on and off frequently
•Odor coming from AC vents

Diagnostic Steps

1
Inspect the AC compressor for any visible damage or signs of wear.
2
Use an OBD-II scanner to check for any fault codes related to the AC system.
3
Check the AC belt for fraying or improper tension.
4
Inspect the cabin air filter for clogs or debris that may restrict airflow.
5
Examine the AC condenser for any external obstructions or damage.
6
Listen closely to identify the noise source while the AC is running.

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
•Socket set
•AC manifold gauge set
•Refrigerant recovery machine
•Screwdrivers

Parts Required

•AC compressor (if needed)
•Cabin air filter
•Refrigerant

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the AC compressor for any visible damage or signs of wear.
2
Use an OBD-II scanner to check for any fault codes related to the AC system.
3
Check the AC belt for fraying or improper tension.
4
Inspect the cabin air filter for clogs or debris that may restrict airflow.
5
Examine the AC condenser for any external obstructions or damage.
6
Listen closely to identify the noise source while the AC is running.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the engine is off.
Disconnect the battery to avoid any electrical shorts during repair.

2. Inspect and Replace AC Compressor

Sub-steps:
- Locate the AC compressor (usually mounted on the front of the engine).
- Remove any belts connected to the compressor.
- Disconnect the electrical connector and refrigerant lines (ensure refrigerant is properly recovered).
- Remove the compressor mounting bolts and take out the compressor.
- Install the new compressor in reverse order of removal, ensuring all seals are replaced.
- Reconnect refrigerant lines and electrical connectors.
- Reattach the belt and ensure proper tension.

3. Replace Cabin Air Filter

Sub-steps:
- Open the glove compartment and locate the cabin air filter access panel.
- Remove the access panel and take out the old filter.
- Clean any debris from the filter housing.
- Install the new cabin air filter, ensuring it is oriented correctly.
- Reattach the access panel and close the glove compartment.

4. Recharge AC System

Sub-steps:
- Connect a refrigerant recovery machine to remove any remaining refrigerant.
- Hook up the AC manifold gauge set to the low and high-pressure service ports.
- Recharge the system with the correct type and amount of refrigerant as specified in the owner's manual.
- Start the engine and run the AC at full blast, monitoring pressure readings for proper function.