SM3 AC compressor issue

I had a similar problem with my SM3. If the A/C system doesn't switch on and there's an error stored, it could be a few things. The A/C compressor itself might be faulty, or maybe it's just the pressure switch acting up. The pressure switch is a safety device that prevents the A/C compressor from running if the refrigerant pressure is too low or too high. Have you checked the pressure switch or the pressure sensor?

Thanks for the quick response. Where is the pressure switch located, and how can I check it? Any specific tools needed?

Honestly, I didn't check it myself. Messing with the A/C system can be tricky because of the refrigerant. I took mine to a workshop, and they sorted it out pretty quickly. Saved me a lot of hassle and potential problems. They have the right tools to diagnose it correctly. Probably a good idea for you, too.

OK, thanks for the advice. I took it to a workshop, and it turned out to be an undervoltage issue, like I suspected. They fixed it for 240€. Appreciate the help!