Subaru Crosstrek and XV Forums banner

Known Problem with A/C Compressors in Model Year 2014-2016 Subarus

101K views 55 replies 28 participants last post by  cuckoos  
#1 · (Edited)
(Moderator: Please transfer this to the appropriate forum if necessary.)

The A/C compressor on my 2015 CVT (10,000 miles) failed on me this past week. It appears that there is a known problem with one A/C compressor part number used on some Subarus in model years 2014 - 2016.

For a couple weeks I had been hearing a “moaning” whenever the compressor’s clutch engaged (rather than just the usual “Click--Whirr”. Sometimes the moaning was mild, but other times it was louder. I noticed that the engine drag from the compressor engagement was more than it was last summer. Drag seemed worse if the moaning was louder. Towards the “end”, if the A/C clutch engaged when I was descending a slight grade, the drag was about the same as when I would do a one paddle downshift on that same stretch of road.

Tuesday (the 5th of July), whilst out running errands, the noise and drag seemed more pronounced and I made a mental note to call the dealer for an appointment. Within ½ mile of that decision, while stopped at a light, there was a “POP” from under the hood and a light grayish cloud of something came out. A quick divert to a parking lot was followed by a 4 mile trip to the dealer. No appointment slots were available, so I had to wait until Friday morning.

From the repair invoice: “Found compressor relief valve is opened. Checked and found compressor failure due to A/C clutch failed. Advised customer clutch failure was source of smoke and liquid was excessive condensation on the lines from the clutch failure [* See my note below]. Removed and replaced A/C compressor with updated part."

Of interest is the “updated part”. Though I didn’t take a note of the old A/C compressor part number, it probably was 73111FJ040. The new compressor is 73111FJ041, as verified online and by checking the part number of the unit installed on my car.

Owners of some XVs and Imprezas might want to check the part number and date portion of the serial number on their A/C compressors and be attentive to noises if they don’t have the updated model. Here is a link to a site that discusses the problem and the VINs where the upgraded A/C compressors were intalled.

New A/C Compressor / Clutch Assembly – 2014-2016 Subaru (Make sure your Ad Blocker is OFF.)


View of my new compressor "in situ".


The compressor label. The first five digits of the serial number are supposed to be:
6 = 2016
04 = April
00 = Day (My calendar doesn't have the 00th of April...)

I know there have been comments in these forums regarding apparent engine lurch as XV’s A/C compressors turned on and off – some of them going a few years back. I also get the sense that some of you got the “They always do that” from the service departments. Check the link to see (a) if your VX is in the date range (b) is prior to the VIN that switched to the new A/C compressor, and (c) check the label on the A/C compressor for Subaru part number and the date of manufacture.


[*Note: Can I call BS on this? If it was smoke I would have smelled it when I popped the hood less than two minutes (and less than 200 feet) after the event. If there was “excessive condensation on the lines” (from the rapid discharge of coolant when the compressor relief valve opened?), I would have likely would have seen condensate still on the hoses at that time.]
 
#2 ·
I ordered my Crosstrek in late February 2016. Mine came with the J041 compressor dated 60200. Thanks for the heads-up.
 
#4 · (Edited)
So it sounds like your AC clutch failed to disengage and your system experienced excessive pressure, which opened the relief valve. Rapid decompression and loss of refrigirant could conceivably result in condensation, as pressurized refrigirant cools as it expands from a liquid to a gaseous state. That is in fact exactly how the AC functions normally. If you've ever cooked with a gas grill, you may have noticed frost on the unit that attaches to the propane cylinder. Same exact concept.

But thanks for the heads up. I have a 2015 with the old compressor. So far all I hear is the click and slight buzz (which increases somewhat with increased RPMs). I don't know if this is normal but I don't believe that heard this buzz previously. I can even hear it in the cabin when stuck in traffic if I specifically listen for it. All I know is that my prior Tacoma didn't do this even with 140k miles on the clock. In fact, I don't recall ever hearing this type of buzz on any other car. So I am not sure if the buzz is just the compressor working or if this is normal for this particular clutch. Just by looking at it, it does not seem that the clutch is slipping. Also, my RPMs drop by about 200-300 if I accelerate the engine while stopped and wait for the engagement/disengagement of the clutch. That seems normal to me.
 
#7 ·
So it sounds like your AC clutch failed to disengage and your system experienced excessive pressure, which opened the relief valve. Rapid decompression and loss of refrigerant could conceivably result in condensation, as pressurized refrigerant cools as it expands from a liquid to a gaseous state. That is in fact exactly how the AC functions normally. If you've ever cooked with a gas grill, you may have noticed frost on the unit that attaches to the propane cylinder. Same exact concept.

But thanks for the heads up. I have a 2015 with the old compressor. So far all I hear is the click and slight buzz (which increases somewhat with increased RPMs). I don't know if this is normal but I don't believe that heard this buzz previously. I can even hear it in the cabin when stuck in traffic if I specifically listen for it. All I know is that my prior Tacoma didn't do this even with 140k miles on the clock. In fact, I don't recall ever hearing this type of buzz on any other car. So I am not sure if the buzz is just the compressor working or if this is normal for this particular clutch. Just by looking at it, it does not seem that the clutch is slipping. Also, my RPMs drop by about 200-300 if I accelerate the engine while stopped and wait for the engagement/disengagement of the clutch. That seems normal to me.
I think the "condensate" was actually residue from the coolant. And I doubt that it was smoke I was seeing come out from under the hood. I was parked in a lot in less than 2 minutes and under 200 feet driving distance. If it had been smoke I would have known it. Also, rubber parts of the hoses were glossy after a 4 mile drive in traffic, and sitting at the dealer for 15+ minutes.

With regard to your noises. Unless I'm driving with the windows down and the radio off, I usually don't hear the clutch engagement click. You do hear the click and the slight whirring when you turn the A/C on and off with the hood open -- clutch engaging and more going on with the compressor. Driving around with the new compressor is much quieter now, and I'm not feeling the drag.

The moaning noise kinda crept up on me. Once it started, I could toggle the moaning on and off by switching the A/C on and off. The loudness varied and the louder the moaning, the more drag on the engine (I think -- perception is not always reality).

If you're hearing the buzz inside the cabin while stopped in traffic, you might have cause for concern. The language I see regarding this issue speaks to a clutch problem, but I'm not sure how that blows a pressure relief valve after all that noise. Maybe part of the problem is the pressure switch. I think this is a scroll type compressor and I've read that they are more sensitive to debris in the system.
 
#8 ·
Well to clarify, I don't hear the noise while stopped in traffic, only when accelerating or crawling in first gear. At higher speeds there is too much ambient noise to pick up the faint compressor buzz. And I don't hear the clutch engaging click, rather I feel it, again when accelerating or crawling in first gear. In Chicago traffic is the norm rather than the exception, so I'm in first gear a lot. At normal idle speed there is no buzz even with the hood up, just at higher RPMs. But still it is so faint that anybody else would never notice it, it's something that I felt and heard once and now my ears are tuned to it.

As far as the glossy hoses that you described, that is likely the lubricant that circulates with your refrigirant. That may have been the residue as well, since it would not evaporate as the refrigirant did. And the smoke was likely not smoke but just the refrigirant being blown off.
 
#9 ·
As far as the glossy hoses that you described, that is likely the lubricant that circulates with your refrigerant. That may have been the residue as well, since it would not evaporate as the refrigerant did. And the smoke was likely not smoke but just the refrigerant being blown off.
That was my conclusion. With temps in the mid-90s, air intake temp 125F+, and the engine coolant balanced at 206F - 208F, it takes something more than water to make the rubber shiny 25-30 minutes after the event. I even gave the service writer a chance to get it right, but she insisted. :blink:
 
#12 ·
So far the only moaning I hear is the quick moan it makes when you first turn on the AC, and then it goes away and I don't recall hearing it anymore after that. I'm pretty sure I have the older compressor too since I bought my XV towards the end on January of 2015. I have around 35-40,000 miles on it. Maybe I just got lucky. I didn't really use my AC alot last year but I have been using it slot lately down here in SC due to the heat and humidity. I'll keep and ear out and be more attentive to driving it. So far I haven't felt any weird-ness with it kicking on and off while driving.
 
#13 ·
So by looks of this service Bulletin this is only a SOA supported repair/replacement, Not a N/American issue ??

Just wondering out loud for us owners north of the 49th..:blink:

Thanks for posting

Troutbum
 
#14 ·
With Regards to the A/C Clutch Engaging at Idle...

One of the discussion themes I've been reading regards RPM drop when the A/C engages at idle. Late yesterday afternoon (temperature in the mid-80s) I had a couple of errands to run, so I made some parking lot observations with the new compressor.

My car's idle speed stabilized at 800 RPM. When I turned on the A/C there was a very short, very slight movement of the tachometer needle, but the RPM didn't really drop. When I turned off the A/C the engine would momentarily surge up to 900 RPMs, then quickly drop back to 800 RPM.

Is the compressor communication directly with the Black Box(s) or does the car catch the load increase that quickly?

We're expecting temps in the mid-90s later this week, so I want to try that again. (My ScanGauge is off getting re-programed so I can't check code-plug readings, though I might have something on my tablet that could show more.)
 
#15 ·
Today I noticed my A/C was barely cool, let alone the nice strong frosty cold blast it usually can put out. Later I noticed a strange cycling noise when the A/C was on when I was inside the car. I could hear it at highway speeds too so long as there were no other cars around. I popped the hood, and sure enough there is quite a screeching noise coming from the A/C compressor when the A/C is on.

This is from a '14 XV so I probably don't even need to check if I have the older model number. I'm still under warranty, so I'll have it checked out soon. So a big thanks for posting this!
 
#17 ·
I don't get how do you read this VIN... Mine VIN reads like this: JF#GPACC#F#######
  • Ignore all the characters that precede the "G". (If you do not have a "G" in your VIN, you just got voted off the Island.)
  • Ignore the characters between the "G" and the 6-digit string at the end.

So if your full VIN looks like: J F 2 G P A F C 8 F H 1 2 3 4 5 6

The partial VIN as per the linked web page will be: G*123456
 
#23 · (Edited)
Interesting. According to the info, it would seem my 2015 Impreza has a VIN in sequence after the indicated VIN stating it should be "ok". Yet, when looking at the compressor itself, it's the "FJ040" version, manufactured in June of 2015. So, would indicate it's the "old" version. I haven't noticed any major issues with the A/C or compressor. Though, "drag" on the engine is kind of hard to notice without a point of reference. I'm sitting at about 10,500 miles. Just something to keep in mind I guess.
 
#26 ·
Drag on the engine from the compressor is normal, and it will sap about 20% of your engine's power to run it. To give you an idea, if I hold the engine at 3000 RPMs and turn on the compressor, the RPMs will drop by about 300 to 400, with a constant application of the gas pedal. This does not happen at idle, although there is a brief drop with return back to baseline. I would say just listen for abnormal noise and abnormal performance
 
#27 · (Edited)
So this is weird. I just checked the actual compressor in my 2016 Limited and it is the old "J040" one even though my Crosstrek's VIN # falls AFTER the supposed start of the updated compressors. What's the deal with that?!

According to what djriful posted, the new AC assemblies started with VIN# G*212351. My VIN # is G*217*** yet it seems as though I still have the old compressor.
 
#32 ·
The VIN information is pretty useless. You need to check the serial number since the part number should be the same between all Crosstrek (unless they redesign the compressor in future).
"Number beginning with 51001***** or HIGHER (October 1, 2015) are equipped with the new clutch. Decode the Serial Number using the photos and illustration shown below."

My serial number is 50701 which means it was made in 2015 July 1st and therefore within the potentially defective pool. If the serial number starts with 6 then you are fine. I suspect some of the earlier 2016 Crosstrek will have compressor from this pool since my 2015 is one of the last off the factory and it has a July batch.
 
#30 ·
Setting the thermostat means you want the cabin at that temperature. The air coming from the A/C vents will be much colder in order to accomplish the cooling needed to lower the cabin temp. Hope this helps.
 
#31 ·
What I've found for models with automatic climate controls is that the bigger the difference between the set temperature and the actual cabin temperature, the cooler the air is when the A/C is on. So, if you are testing for how cold can your A/C get, set the desired temperature to it's lowest point before taking the measurement.
 
#33 ·
Here is the result from my IR thermometer. I am at idle...tried to catch the cars OAT (outside air temp) but it's too hard to see. The survey says, air coming out of the center vent with A/C on full and fan on 2...25.5Ëš...OAT 75.
 
#34 ·
Here is the result from my IR thermometer. I am at idle...tried to catch the cars OAT (outside air temp) but it's too hard to see. The survey says, air coming out of the center vent with A/C on full and fan on 2...25.5Ëš...OAT 75. View attachment 194537
An infra-red thermometer gun isn't the best thing to measure air temperatures... they are great at measuring surface temperature however. So, you are really measuring the temperature of the plastic vent (either the directional fins or the ducting inside depending on where the probe is actually measuring (sometimes the red dot is off from where the probe is actually measuring).

If you have a digital meat thermometer, you can stick the probe in the vent and just let it hang out and get cooled by the air.
 
#35 ·
Good point, I didn't realize that. But I think I can say that the A/C is able to cool the cabin. It could be that other Crosstrek cars are not properly charged...or there is some other problem with the A/C.
 
#39 ·
A/C temp reading take 2. 42.5Ëš F.

View attachment 194769
This is perfect. And for others who have issues with the AC compressor cycling, first thing to do before freaking out is doing this. If your temps are in this general area, the cycling is appropriate and nothing to worry about. Ultimately, this is the test to do to evaluate your AC.