Medical Definition of adhesive. 1: an adhesive substance; especially : a substance (as glue, starch, paste, or mucilage) that bonds two materials together by adhering to the surface of each.
The sensors physically measure the tire pressure in each tire and report it to the vehicle's instrument cluster or a corresponding monitor. Some units also measure and alert temperatures of the tire as well. These systems can identify under-inflation in any combination, be it one tire or all, simultaneously.
Direct TPMS uses a sensor mounted in the wheel to measure air pressure in each tire. When air pressure drops 25% below the manufacturerâs recommended level, the sensor transmits that information to your carâs computer system and triggers your dashboard indicator light. Indirect TPMS works with your carâs Antilock Braking Systemâs (ABS) wheel speed sensors. If a tireâs pressure is low, it will roll at a different wheel speed than the other tires. This information is detected by your carâs computer system, which triggers the dashboard indicator light.