Checking the tyre pressures is free and easy. See the link below. #16.
https://www.volvoforums.org.uk/showthread.php?t=335004
Indeed it may prove to be far more complicated than tyre pressure/s, but it's not the first instance I have seen (on the forum) of the TPMS apparently causing multiple issues.
Nothing to be lost (or cost) by checking?
