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My 2106 Crosstrek has the "updated" compressor, but still makes horrible noises on start up like you talk about. Currently at the dealer having them look into it. When they turned on the car at the service area they first thing they said was.. you guessed it... "that's normal."
Yea, that's not normal, by any means. If they tell you that again, ask them to start any other crosstrek on the lot. I will bet they don't do that. My 2015 MT does not do that.

That noise sounds like a bad clutch
 
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.
 
@KJoFan I believe those VIN numbers are only applicable to 2016 models. Check the serial number on the compressor itself.
Makes sense. Serial # on the compressor is 5060093237 and part # is 73111FJ040

That tells me it's of the "troubled" variety.
 
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
 
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.
 
I have a question..

When we turn on the A/C in the car and read the cold air coming out of the vents, is it supposed to be colder than the set temperature or is it going to be in line with the set temperature?

eg: if it set to 68F, is the cold air thru the vents supposed to like 60F or closer to 67, 68F?
 
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.
 
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.
 
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.
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.
 
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.
 
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.
 
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.
 
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.
Definitely. But I didn't want others to try to the same thing you did but hit a warm spot on the vent and then think something was wrong with their A/C!
 
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.
Don't mean to go on a tangent, but early on, my AC cycled on/off more frequently than seemed reasonable, and performance was not as expected. Sure enough, the car had been delivered from the plant with a low charge. There were no leaks. This is also something to check for those particular symptoms.

My car is also likely in the suspect population, but so far....now so good!
 
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.
 
I did notice today when I started my car (A/C was on when started) it made an ugly...honking noise like something was having a rough start. Is this the compressor? It doesn't happen upon every cold start, but I have noticed it a few times now that I'm thinking about it.

It operates normally and quietly once it's started, at least at this point.
 
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