You can tell which system you have, If you have a more modern system with pressure sensor inside the valve (sometimes you can gently rock the valve stem a bit and you can hear the sensor hitting the alloys inside the wheel) .
I you have a display with indicated Tyre pressures for each wheel you have the new system.
My system is the old type were it measures the 'Drag' between two sets of wheels eg. two front ones.
A dragging brake will also give a warning on this system because there would be more drag on one side compared to the other.