2
2.
General Information
2.1
TPMS system review
A tire pressure monitoring system (
TPMS
) is an electronic system
designed to monitor the air pressure inside the pneumatic tires on
various types of vehicles. TPMS report real-time tire-pressure
information to the driver of the vehicle, either via a gauge, a
pictogram display, or a simple low-pressure warning light. TPMS
can be divided into two different types — direct (dTPMS) and
indirect (iTPMS). TPMS are provided both at an OEM (factory)
level as well as an aftermarket solution.
2.2
TPMS Legislation
In the United States, the United States Department of Transportation
(NHTSA) released the FMVSS No. 138, which requires an
installation of a Tire Pressure Monitoring System to all new
passenger cars, multipurpose passenger vehicles, trucks, and buses
that have a gross vehicle weight rating (GVWR) of 4,536 kg
(10,000 lbs.) or less, except those vehicles with dual wheels on an
axle, as of 2007. In the European Union, starting November 1, 2012,
all new models of passenger cars must be equipped with a TPMS,
with even tighter specifications that will be defined by the UNECE
Vehicle Regulations (Regulation No. 64). From November 1, 2014,
all new passenger cars sold in the European Union must be equipped
with TPMS. On July 13, 2010, the South Korean Ministry of Land,
Transport and Maritime Affairs announced a pending partial-revision
to the Korea Motor Vehicle Safety Standards (KMVSS), specifying
that "TPMS shall be installed to passenger vehicles and vehicles of
GVW 3.5 tons or less, ... [effective] on January 1, 2013 for new
models and on June 30, 2014 for existing models". Japan is expected
to adopt European Union legislation approximately one year after
European Union implementation. Further countries to make TPMS
mandatory include Russia, Indonesia, the Philippines, Israel,
Malaysia and Turkey.
2.3
TPMS tell-tale light
