Lexus LC AC Compressor Failure

I had something similar on my LC. The A/C would just randomly cut out, and then sometimes it wouldn't even come on at all when I started the car. No cool air whatsoever. The shop initially thought it was a faulty pressure switch, but that didn't fix it. Did you check the A/C compressor relay? Where did you read about the undervoltage?

Thanks for sharing. Did replacing the pressure switch offer any temporary improvement, or was it entirely ineffective? The undervoltage suggestion came from online research, indicating a potential link between low voltage and A/C compressor malfunction in hybrid vehicles.

Replacing the pressure switch didn't do anything at all, no temporary fix either. That's why I would skip it and check the compressor relay first. I eventually had to take mine to the workshop and they found a bad sensor. Honestly, given what you're saying, I'd take it to a shop with experience on Lexus hybrids. It could be so many things.

I appreciate the detailed insights and the caution regarding specialized expertise. I will prioritize a comprehensive inspection at a reputable workshop experienced with Lexus hybrid systems. It turned out to be a faulty pressure sensor, as you suggested. The repair cost 240€ including diagnostics and replacement. Thanks again!