Does anybody know if there is a way to actually see a numerical display of the tire settings for the TPMS on a GenIII-P4 with nav. I have set the system as per the manual but it would be nice to verify my resettings by some read-out. Maybe a combo of brake taps and power button pushs or some other such magic? Seriously, I would like to know if there is a display, possibly on the nav screen, that is accessable to the owner without plugging into the OBD tap.
I don't know if the system takes a 'PSI' reading per say, or it simply takes a mark for each tires presure. When the presure falls 25% below that mark it activates the warning. No way I know of for checking what the TPMS has stored for that mark though other than the obvious (tire guage and reset TPMS). Tom