Subaru A/C Compressor Failure (2014-2019 Impreza, Forester, Crosstrek): Clutch Problems and Replacement Guide

Symptoms of a Failing A/C Compressor

A failing A/C compressor on your Subaru Impreza, Forester, or Crosstrek will usually provide several warning signs. The most common point of failure on these models is the electromagnetic clutch, which can produce its own unique symptoms.

• No Cold Air: The most obvious symptom is a lack of cold air from the vents. If the compressor isn't engaging or has failed internally, it cannot pressurize the refrigerant.
• Loud Noises: Grinding, squealing, or rattling sounds from the engine bay when the A/C is turned on often point to a failing compressor. A worn or seized bearing will produce a high-pitched grinding or squeal, while internal failure can cause rattling.
• Compressor Clutch Not Engaging: You should hear a distinct 'click' when you turn on the A/C, which is the sound of the clutch engaging. If you don't hear this click and the center plate of the pulley isn't spinning with the outer pulley, the clutch has likely failed. This was a common enough issue for Subaru to issue a technical service bulletin.
• A/C Works Intermittently: A common issue on these models is that the A/C works when the engine is cold but stops blowing cold air when the engine gets hot, especially at idle or in traffic. This is often caused by the air gap in the clutch becoming too large. When the clutch coil heats up, its magnetic field weakens and can no longer pull the clutch plate across the excessive gap.
• Visible Damage or Leaks: Oily residue on the body of the compressor can indicate a refrigerant leak from the compressor's seals or housing.

Known Issues, TSBs, and Recalls

There are no open safety recalls for this A/C compressor, but Subaru has issued several Technical Service Bulletins (TSBs) related to A/C performance on these vehicles. TSBs are instructions for dealers on how to diagnose and repair known common issues.

TSB 10-84-16R: A/C Compressor Clutch Failure

This is the most significant TSB for these vehicles. It addresses a condition where the A/C system becomes inoperative due to a failure in the electrical windings inside the compressor clutch assembly. The solution is to replace the entire A/C compressor and clutch assembly with an updated part. This TSB applies to certain 2014-2016 Impreza, Forester, and XV Crosstrek models. While this was covered under the original factory warranty, it is not a recall, and repairs after the warranty period are typically the owner's responsibility. 🎬 Watch: Details on Subaru's A/C compressor TSB and coverage. However, some owners have reported receiving goodwill assistance from Subaru even after the warranty expired.

Buying a Used A/C Compressor: What to Check

A quality used OEM compressor can be a reliable and cost-effective alternative to an expensive new unit, especially when compared to cheap aftermarket options which may have fitment or durability issues. Here’s what to inspect before you buy.

1. Verify the Part Number and Model: This is the most critical step. These Subarus use a Valeo TSE14F compressor for the 2.0L engine. Ensure the part numbers (e.g., 73111FJ000, 73111FJ040, 73111FJ041, 73111FJ042) match. Do not confuse it with the SCSA08H model used on other Subarus, as they are not interchangeable.
2. Inspect the Clutch and Pulley: The pulley should spin freely and smoothly by hand with no grinding or wobble. The clutch plate (the very front piece) should be clean and free of heat damage or cracks.
3. Check for Leaks: Look for any oily, grimy residue around the hose connections or on the body of the compressor. This indicates a refrigerant leak, and the part should be rejected.
4. Examine the Electrical Connector: The connector pins should be straight and free of corrosion. A damaged connector can prevent the clutch from engaging.
5. Confirm It Came From a Running Vehicle: If possible, choose a part from a vehicle that was in a collision but had a running engine. This increases the likelihood that the A/C system was functional before the accident. Avoid compressors from flood-damaged or fire-damaged vehicles.

Replacement Overview & Difficulty

Replacing the A/C compressor is a moderately difficult job that requires specialized equipment for handling refrigerant.

• Difficulty Rating: 3 out of 5
• Estimated Time: 1.5 - 2.5 hours
• DIY Feasible: Yes, but with a major caveat.

General Replacement Steps:

1. Refrigerant Recovery: Have a professional shop evacuate the A/C system.
2. Remove Serpentine Belt: Use a wrench to release tension on the belt tensioner and slip the belt off the A/C compressor pulley.
3. Disconnect Hoses and Connector: Unbolt the two refrigerant lines from the top of the compressor. Be sure to have new O-rings for reinstallation. Unplug the electrical connector for the clutch.
4. Unbolt the Compressor: Remove the mounting bolts that secure the compressor to the engine block.
5. Install New Compressor: Bolt the new compressor in place. Add the specified amount of PAG 46 oil if the new compressor is empty. Install new, lubricated O-rings on the refrigerant lines and bolt them down.
6. Reinstall Belt: Route the serpentine belt back over the pulleys.
7. Vacuum and Recharge: Take the vehicle back to a shop to have the system vacuum-tested for leaks and then recharged with the correct weight of R-134a refrigerant.

Cost Comparison

The cost to replace an A/C compressor can vary significantly based on the parts used and labor rates.

Frequently Asked Questions (FAQ)