NX low tire pressure ABS issues

That's odd, especially with those other symptoms popping up. Are you sure the tire pressure is actually within spec on all four tires, even after the car's been sitting for a while? Have you tried resetting the TPMS?

Yeah, I've double-checked the pressure, even let it sit overnight. Resetting the TPMS didn't do anything. Still getting the low pressure light, plus the shaking and ABS. Could a faulty tire valve cause all this chaos, even if the pressure seems fine?

A defective valve could definitely be the culprit. I had a similar issue on my previous car – slow pressure loss that the TPMS picked up, and it threw all sorts of errors because of the pressure difference between the wheels. Get it checked at a workshop ASAP.

You nailed it. Turns out a valve was faulty, causing slow pressure loss. Replaced it, cost me 280€, and everything's back to normal. Appreciate the help!