TPMS is an automated system that monitors the air pressure in a vehicle’s tyres. When air pressure in one or more tyres drops more than 25 percent below the correct pressure, a warning indicator alerts the driver. TPMS typically delivers these alerts to the driver through one of two types of warning lights on the dashboard.
- The first uses the official TPMS symbol, which is a cross-section of a tyre with an exclamation mark in the center.
- The second is a top-view graphic image of a car that indicates which tyres are low.
Metal or Rubber?
There are two different types of rebuild kits available, one with rubber valve stems and one with metal valve stems. If your existing valve system rebuild kit is rubber, you’ll need the rubber rebuild kit. If it’s metal, you’ll need the metal one.
Maintenance and Replacement
Over time, TPMS components can degrade, affecting sensor operation. In order for the system to operate at peak performance, parts may need to be replaced at regular intervals.
Batteries and TPMS
The battery in the tyre pressure sensors are non-replaceable and have a car service life of approximately 7-10 years or 150,000 miles.
The use of a tyre sealant may clog the tyre pressure sensor. If it is rendered inoperative, the sensor may need to be replaced.
Additional Sensors Available
We have additional sensors that can be put on alternate tyres if needed. Avoid installation and labour issues by having an extra set of sensors for use.
If a vehicle does not have an original-equipment system, one can be installed. This stand-alone TPMS kit includes a dash-mounted display and wheel-mounted transmitters that fit most wheel applications.
Air Pressure Maintenance
While TPMS systems offer increased safety to drivers through low pressure warnings, they are not meant to be a substitute for proper tyre pressure maintenance.
Be sure to read our article on the importance of correct air pressure as well for even more in-depth information.
How TPMS Works
Tyre pressure is monitored through one of two methods: direct or indirect. Direct TPMS monitors the actual air pressure inside each tyre via a sensor mounted within the tyre. Indirect TPMS measures tyre pressure by monitoring the speed and rotation of each individual wheel. When a significant variation in speed and rotation is detected in one or more wheels when compared with the others, it is often an indication of under inflation. This information is then transmitted to the vehicle’s on-board computer, and the driver is alerted.