I replaced the compressor today, added 20cc of PAG46 to the compressor, vacuumed the system and charged it back up. AC is working perfectly fine on the highway again.



I drove the exact same route as last night and was getting cold air out of the vents throughout the test drive.

Side note / observation: With the live data stream going, I was able to see that the AC system tries to maintain the evaporator at a cold temperature (6 degree C) since the compressor is clutchless and always engaged. Even when you are calling for heat, the evaporator remains cold. When the temperature knob is adjusted for cold air, instant cold air out the vents since the evaporator was maintaining temperature. The only time I noticed the evaporator raise temperature is when the AC Off/Rest button is pressed (and also when my old compressor wasn't working).

Thanks for all your help and feedback guys!