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How a tire pressure monitoring system works and its benefits for vehicle safety

Tire pressure is an important part of the safety and fuel economy of a vehicle. Maintaining ideal tire pressure can significantly improve fuel efficiency and prolong the life of your tires.

tire pressure monitoring system use sensors to detect air pressure changes and alert drivers when they are dangerously low. A warning light will illuminate on the dashboard when this happens.

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TPMS technology aims to help drivers to maintain their vehicles’ tires at the correct pressure. It monitors air pressure and alerts the driver if any of their tires falls below a certain level.

Currently, there are two main types of tire pressure monitoring system  direct and indirect TPMS. While both provide the same function, they differ in how they measure and transmit information.

With direct TPMS, there is a sensor mounted on each wheel that measures the air pressure of each tire and then sends this data to a central computer system. When the pressure falls below 25 percent of the recommended level, it triggers a low-pressure warning light on your car’s dashboard.

Indirect TPMS, on the other hand, uses software to measure pressure and temperature using existing sensor signals. It then uses this data to detect under-inflation.

The indirect system is also cheaper and easier to maintain than the direct tire pressure monitoring system . However, it has a few drawbacks. It needs to be reset every time the tires are inflated or rotated, and it is less accurate than the direct TPMS.

Regardless of the type of TPMS used in your vehicle, it can help to reduce the risk of accidents and improve driving safety. It also improves fuel efficiency and helps to reduce your vehicle’s carbon footprint.


A tire pressure monitoring system alerts drivers when one or more tires lose air and allows them to add it before it causes damage. It’s the ideal tool for preventing tire-related accidents, but also saves fleets fuel by reducing rolling resistance and improving fuel economy.

Direct TPMS is a simple, reliable system that attaches a pressure sensor/transmitter to each tire and uses it to relay the data to an in-vehicle receiver, where it’s analyzed and translated before a warning light appears on the dashboard. It’s more precise than indirect TPMS and can be easier to set up and maintain.

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Indirect TPMS, on the other hand, relies on wheel speed sensors to compare the rotational speeds of tires. If a tire loses air, it will rotate slightly faster than the others on the same vehicle speed. This information can be gleaned from electronic monitors in the vehicle, and then interpreted using advanced programming and processing.

This technology is less sensitive than direct TPMS, but it does require more attention from drivers. In order to keep the TPMS in compliance with vehicle manufacturers, it must be reset every time a driver fills up or replaces a tire.

Direct TPMS

How a tire pressure monitoring system works is simple: Battery-powered sensors on the rim measure pressure in each wheel, and this data is sent to a receiver inside the vehicle. Dedicated software within the control device then processes the data and warns drivers of any changes that could impact their safety and gas mileage.

tire pressure monitoring system that use direct sensor technology on all tires, like those on the Nissan Quest and Infiniti Q45, are typically more accurate and reliable. They’re also easier to service.

However, these systems can have their drawbacks. For one, they require calibration each time a tire is rotated or reinflated. They may also give false warnings in wet or icy conditions because the rotational speed of a spinning tire will differ when it breaks traction with the road.

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Another issue is that TPMSs must be manually programmed to new OE or aftermarket sensors when they are replaced. That means a trip to the dealer or shop that has the right scan tools and reprogramming software.

This can lead to a lot of confusion and frustration for technicians. Most have a love/hate relationship with these devices.

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