In our 8 month old Bayon, we recently had to have a new tyre. A couple of days later and the Warning message came on to state, 'Low tyre pressure..'. Using the info in the door sticker, all of the tyres were slightly over the recommended pressure and too high, but have all been adjusted to correct pressure and, as directed, reset button pushed.
Does anyone know, does the sensor tell the difference between too high and too low (In which case, it's apparently faulty as all pressures were high) or does it just know that the pressures are not what they're supposed to be and says 'Low' as that's normally the case. Ultimately, it determines whether I contact the selling garage, or my tyre garage.

 

I have same issue. Did you solve it?