The valves also corrode and the bits attached to the inside of the rims need replacing/servicing too. It's a bit pointless really and won't ever replace checking them yourself as you should do regularly.
It is not something that I want and would be much happier if it is just the ABS system. I had the electronic system on a previous Audi and the vibration on rough road surfaces would cause an alarm to come up with the nearside front tyre pressure sensor. There was one concrete section of the M25 that would always set it off. Not what you want when cruising along in the fast lane
I agree nothing beats a manual check and the ABS system is a helpful back up.
