TPM System or TPMS stands for "Tire Pressure Monitoring System". This system is responsible for altering the driver of a vehicle that one or more tires are improperly inflated. The TPM system was installed in tires to keep drivers from driving on under or over inflated tires because this can cause other problems with a vehicle. The TPM system is attached to the valve stem and need professional installation and replacement.
There are two different types of TPM systems that come standard; direct and indirect. Both systems will trigger a dashlight when tires are over or under inflated. This TPM system is located in the antilock brake system and speed sensors.