V70 AC compressor issue

I had something similar happen in my V70. The air conditioning just quit. Have you checked the belt tensioner? A loose belt can cause the A/C compressor to not engage properly. Also, what about the pressure switch? If the system detects low refrigerant, it will shut down the compressor to prevent damage. I would start by checking those two components.

Thanks for the quick reply. Can you tell me more about the symptoms you saw when your belt tensioner failed? And is there an easy way to test the pressure switch without special tools?

When the belt tensioner went bad, the belt was visibly loose and making a squealing noise, especially when the A/C was turned on. As for the pressure switch, you'll probably need a gauge to check the refrigerant pressure, which usually means a shop visit. I'd recommend taking it to a shop to get it diagnosed properly before replacing parts.

Thanks for the help. I took it to a garage, and it turned out to be undervoltage. The total repair cost was 240€.