Tire Pressure Monitoring System (TPMS)

The Tire Pressure Monitoring System (TPMS) is a safety feature that warns drivers when one or more tires are significantly under-inflated, which can cause unsafe driving conditions. There are two types of TPMS: indirect and direct. Indirect TPMS relies on wheel speed sensors to estimate tire pressure from rotational speed variations, while direct TPMS employs pressure sensors in each tire. The illumination of the low tire pressure indicator represents the final step in the process of either an indirect TPMS or a direct TPMS. Indirect TPMS is relatively inexpensive compared to direct TPMS and requires less programming/maintenance over the years. Direct TPMS, on the other hand, provides more accurate readings and is more reliable than indirect TPMS. The mechanical TPMS sensors use a diaphragm and a spring to sense the pressure changes, while the electronic sensors use a battery-powered device that transmits a signal to the vehicle’s ECU. ECU warns the driver either through a warning indicator or a dedicated comprehensive report page on the display of the AVN module.

SUMER supplies TPMS sensors to car factories. The products fulfill car factory standards and related national regulations. SUMER also includes the TPMS report page on all its AVN products.