Lexus LC TPMS Fault

Interesting. I have an LC as well, though I can't remember what year mine is, and had similar issues. Kept getting low tire pressure alerts even after inflating the tires. Was it happening on just one tire, or all of them?

It's happening on all four tires simultaneously. I've checked with a pressure gauge and the pressure is fine. Could be a faulty receiver?

Hmm, all four at once sounds like more than just coincidence. I had the same thing, and it turned out to be the TPMS sensors themselves. Given the mileage on yours, the batteries are probably dying. I'd suggest taking it to a shop; they can diagnose it properly.

Thanks for the insight. Took it to the shop as you suggested. Turns out the sensor batteries were indeed dead. Cost me 280€ to replace them. Issue resolved.