my 2015 had the same exact AC issues. It would come and go cold air wise. I'd be on the highway and it would be blowing warm air. Another day it would be fine, etc. There ended up being a TSB out about the problem and Subaru replaced my AC compressor (back in 2015 or 2016) for free.
Reviews of OEM Subaru AC compressor
48 votes
With the air conditioning shutting off after driving probably gonna need to replace the compressor. Issue with almost all subarus from 2015-2017. And the hesitation when going into reverse is normal, cvts tend to be delayed.
The only problem I've had with my recently acquired 2014 XV is that it still has the old version of the ac compressor, which isn't a cheap fix. AC still works intermittently, though, I just have to toggle it on and off every few minutes.
My 2016 wrx has an AC compressor fit for a small drawer or shitty wine fridge. In the summer I can have the AC in full blast for the whole ride and the car never cools off. :(
My local Subaru dealership replaced both the AC clutch and compressor with the new, updated one FOR FREE even though I was out of warranty by over 12k miles. What a great dealership. Will report again when I see how it works now...
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