Tire Pressure Monitoring Systems


Tire pressure is one of those things that we can’t ignore. Not only is it illegal in most countries to drive with tires that are under pressure.

But it’s also incredibly dangerous. If our tire pressure continues to fall unchecked, then we’re putting ourselves at risk needlessly.

Our traction may not be as predictable as it once. Which can lead to a loss of control when driving. Also, our tires then become more vulnerable to punctures and potential blowouts.

Before Tire Pressure Monitoring Systems technology. It was the driver’s responsibility to manually assess their tire pressure. And to take the necessary steps to make sure it was set correctly. This usually involved tools and knowledge that not everybody had or understood. So having these systems built into our modern cars is a real benefit. It’s also something that should never be taken for granted.

What Is A Tire Pressure Monitoring System?

Tire Pressure Monitoring System is a system that’s built into most modern cars (and other vehicles) that automatically monitors the tire pressure and airflow.

The technology is always working in the background. And will alert the driver if and when action is requiring. For example, should there be an error, should one tire be out of sync with the rest, or if a tire reaches dangerous levels of low pressure?

Every Car Have Diffrerent TPMS

Every car is different. But they generally do this by certain icons highlighting on the driver’s dashboard. These can be accompanied by beeps and pings, alerting the driver to a potential fault when they start the car. Many Tire Pressure Monitoring Systems systems use an early warning feature, alerting the driver to this issue before it reaches dangerous levels

This allows the driver enough time to resolve the issue and complete any journeys. When they need to before the concern becomes too pressing. The dashboard icons vary, but there are some universal low tire pressure signals that usually appear in most car designs. The first most popular sign is an exclamation mark surrounding by a circular shape to indicate a tire or a wheel.

The second common icon is the basic outline of a car. From a top-down view, with one (or more) of the tires highlighted. For example, if the pressure is low on the car’s right-front tire then this will be reflected by the icon.

How does Tire Pressure Monitoring Systems work?

Different car manufacturers have different designs and visions about how Tire Pressure Monitoring Systems should work. But there are two main types of TPMS that are generally installing in most vehicles.

The First form of Tire Pressure Monitoring Systems

The first is Direct Tire Pressure Monitoring Systems. Which employs a sensor that is attaching to each wheel that continuously measures air pressure in the tire it’s connecting to. The sensor feeds the data back to a more centralized computer system. Which is typically attached to the car’s overall system, working in conjunction with it. Although recent designs have the software already in-built, making the car’s hardware and the TPMS part of the same overall design. Some car manufacturers outsource their TPMS design while others incorporate it as part of their own engineering methods. If the direct TPMS sensor detects that the tire pressure has dropped to below a 25% below the legal limit, then it will alert the driver with a notification. This is usually enough time for the drive to conclude their journey and resolve the issue at their leisure.

The second form of Tire Pressure Monitoring Systems

The second form of Tire Pressure Monitoring Systems is known as Indirect TPMS. This works a little differently. Rather than a sensor being attaching to each wheel, indirect TPMS uses built-in software that monitors wheel speed. It does this by interpreting data from the vehicle’s ABS (Antilock Braking System) sensors instead of its own. If the software detects an anomaly in the wheel speed, especially if one is spinning at a different speed to the others, then the notifications will be triggered. This alerts the driver and allows them to investigate the cause of the notification and verify if this indeed reduces tire pressure or another problem.

Both forms of Tire Pressure Monitoring Systems are considering effective and helpful ways to detect if a tire’s pressure has fallen lower than it should be.

Direct TPMS is considering superior by some motoring experts. Simply because that uses a dedicated system to detect individual tire pressure problems. Indirect Tire Pressure Monitoring Systems, while effective is only able to highlight a drop in tire speed instead of fully diagnosing reduced tire pressure.

Frequently Asked Questions

Can TPMS sensors report their battery status?

 it depends solely on the model of TPMS in use. There are certain models capable of sending signals in order to indicate battery status. But it only sends the signal after the battery depletes to a certain level.

Can the TPMS sensors fit on all wheels?

Most tires are able to fit a tire pressure monitoring system sensor. Some tires are not compatible with the TPMS sensor. The way they are placed in the tire’s valves stems holes would cause the motion detection component to malfunction.

Is it possible to turn off TPMS?

No, it is not possible to turn off the TPMS of a vehicle, as it is mandated by a law passed by Congress called the ‘tread’ law.

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