AC Issues Diagnosing

[KamA4]

Any tips on how to diagnose issues with AC? I think my compressor may still be working because I think it does still blow slightly colder air than outside which leads me to think I have a refrigerant leak, but I have no clue how to figure it out. Am I better off just taking to a shop? If it’s nothing crazy I don’t mind working on it myself.

[1killera4]

What year is your car?

[Millzy32]

Any tips on how to diagnose issues with AC? I think my compressor may still be working because I think it does still blow slightly colder air than outside which leads me to think I have a refrigerant leak, but I have no clue how to figure it out. Am I better off just taking to a shop? If it’s nothing crazy I don’t mind working on it myself.

Good luck. I've had a loaner for two days now waiting on the dealership who put dye in the AC to find the leak and they are still testing it. Mine's a 2018. First time they just filled refrigerant and that lasted only a few weeks. I'll post here once they figure out the problem.

[KamA4]

It’s a 2017

[a4audi4fun]

https://static.nhtsa.gov/odi/tsbs/20...87510-0001.pdf

This a US TSB related to A/C issues and providing a warranty extension for 2017 A4 and a few other models. Might be worth checking with your dealer if there is any equivalent for Canada. Please reply back in this thread with whatever happens for you, as I have a 2017 A4 that doesn't have any A/C issues but would like to be aware if anyhting chnages.