What Is TPMS?

TPMS Stands For Tire Pressure Monitoring System. As Its Name Suggests, A Tire Pressure Monitoring System

Is More Than A Single Part. In Fact, TPMS Involves A Valve And A Sensor, And It's Also Important To Know That

Not All TPMS Systems Are Created Equal. There Are Two Kinds Of TPMS Technology–Indirect And Direct.

Indirect TPMS Approximates Tire Pressure Indirectly By Using Data From The Vehicle's

Antilock Brake System (ABS).

Direct TPMS Is A Warning System That Warns A Vehicle's Operator Of An Unsafe Change In The Air Pressure

In One Or More Of The Tires. Readings Are Provided By Pressure Sensing Transmitters Mounted Inside Each

Tire And Sent To A Central Computer (ECU) For Display On The Dashboard. A Warning Indicator Light On

The Instrument Panel And An Audible Warning Notify The Driver If A 25% Drop In Pressure Occurs.