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Originally Posted by marcx5
if there is a pressure sensing unit, it there anyway to get a readout of the actual pressure on the navigation screen? like many cars do? or if not, are there any aftermarket devices that can pick up the signal and show us the pressure from these sensors?? thanks.
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Anything is possible, but one would need to know exactly what is being transmitted - my understanding is that this system is measuring RPM differential in the wheels. But that is what I understand by what has been written on line, so it has a 50% chance of being correct.
I do know that is how the E46 M3 worked, but I also know the M3 did not have the complicated sensors this X5 is using to measure it. The M3 used the ABS sensors to measure wheel RPM to do the rotational math and ultimately determine if one tire was getting low.
Next week I'll call a Master Tech that I know and find out if he knows how this really functions, by RPM or actual Pressure.
Cheers,
KEF