I absolutely agree, this is simply an interface problem. If there system can detect a change from one state to another, a simple confirmation or NON-confirmation window can be shown on the Sensus screen.
Originally Posted by mdmd
Coincidentally, I had performed the Calibration process the day before this post appeared...after having one of their techs refill my tires at America's Tire in the morning, I drove about 18 miles on the highway and the TPMS screen was on with the "in process" circle going the entire trip, never to complete, even after driving the required 22mph. The manual even states "The system will not provide any other confirmation that calibration has been completed." which is ridiculous! So there can be a false status of accurate tire pressure after the vehicle is powered off. I have a decent tire gauge and therefore know the tires are at the correct pressure.
Below is the last step in the calibration process from the Owner's Manual:
8. Run the car until calibration is complete.
Calibration is done when the vehicle is driving
at a speed above 35 km/h (22 mph).
> When enough data has been collected for
the system to detect low tire pressure, the
color of the tire symbols in the center display
will change from gray to green. The
system will not provide any other confirmation
that calibration has been completed.
If the car's ignition is switched off before
calibration is complete, the tires in the
center display change color from gray to
green upon next start-up, even if calibration
is not complete. Perform the calibration
again and allow it to complete within
the same operating cycle to ensure that
the calibration is carried out correctly.
If start-up of calibration fails, the following
message appears: Calibration
unsuccessful. Try again..