What is TPMS and how does it work

The TPMS is the pressure sensor of the tire : this figure, on cars that are equipped with, it is constantly monitored to ensure maximum safety.

Let’s find out how it works (and if it’s mandatory).

What is TPMS?

Small but efficient, the TPMS ( Tire Pressure Monitoring System ) is an integrated monitoring system that detects and monitors tire pressure in vehicles, automatically reporting any leaks on the display.

The presence of this system makes driving safety higher thanks to the reduction of unpleasant problems deriving from under-inflated tires, such as prolonging the braking distance, maintaining curves and overheating of the tires.

In addition, the presence of TPMS also allows you to save money, as
the wrong tire pressure means
higher fuel consumption and greater wear. (Read also: How to check tire pressure )

Its operation is apparently simple, as any possible problem is immediately reported to the driver, so that
manual and periodic pressure checks become superfluous. But let’s find out how it really works.

Direct and indirect TPMS system

There are two types of TPMS tire pressure monitoring, direct and indirect .

The first monitors the pressure and temperature of the tires with sensors integrated on each one, then sends the data via radio to the central receiver which processes them and signals them to you on the display.

The indirect TPMS system relies on the ESP and ABS sensors and thus detects the
tire pressure based on the number of revolutions, and then transmits the data to the control unit.

Direct TPMS captures data extremely precisely and provides useful
additional information such as tire position, stationary leakage measurement and spare wheel monitoring.

Having a car equipped with a TPMS system is very common today, but it also requires a higher cost for maintenance and tire replacement, due to the fees of the technicians who install and program the sensors.

Is the TPMS system mandatory?

From 1 November 2012 the TPMS system is present on all new
homologated models of cars and campers sold in the EU and 2 years later (from 1
November 2014) it is mandatory for EU registration.

Remember that the TPMS system is added during the car manufacturing and
no subsequent installations are planned.

However, sensor technology is complex, so forget about DIY : in the event of the warning light coming on (tire or sensor defective) you have to go to a garage, as well as for periodic replacement.


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