The year of the Taurus would be a factor.... Early TPMSs used ABS wheel
speed input for tire pressure computations.... this was NOT a good system.
Later years/models used valve stem mounted transponders... much better but
still not "great".
Since TPMS is federally mandated in the US, these systems use a rim mounted
sensor... a very good system if the tire shops realize that demounting a
tire incorrectly can destroy a sensor.
Judging from the number of low tires we can see on our daily commute to
work, TPMS is long overdue.
Ed... Some people will install an alternative wheel/tire combination that
may desire lower than manufacturer tire pressures - or, for some unknown
reason, decide they want to run their tires at lower than recommended
pressures.... On current model Fords, the low limit of the tire pressure
tolerance cannot be adjusted in programming. I understand Fords reluctance
to allow this since the liability could be astounding.
Every time the manufacturers try to improve convenience and safety, someone,
somewhere will complain. These people would have us riding around in cars
powered by magneto sparked, flat head, updraft carbbed "flivvers".... but
that would only give them other stuff to complain about...
For the original poster... disabling the system is, in the US, against the
law.... period. While the system is not yet officially mandated in Canada,
any government vehicle inspections I perform include the disclaimer that "if
there is a factory installed device...." this includes a catalytic converter
(though Alberta has no current anti-tampering laws), any supplemental
restraint systems, lighting, seatbelts... the list goes on.... "... they
must be functional". What this means... even though we have no federal or
provincial mandate currently in place regarding TPMS.... if it is equipped
with this feature, it MUST be functional.