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What is a Tire Pressure Sensor?

A tire pressure sensor is one of the more remarkable components in your car. It’s very tiny yet serves an important and pretty cool purpose.

The tire pressure sensors do exactly as the name implies: they monitor the pressure in each of your four tires. And that’s pretty much it. Well, not pretty much it, that is it.

But let’s break it down a tiny bit more. Your car has four tire pressure sensors. One sensor is placed in between each wheel and tire.

Powered by the battery, the tire pressure sensors determine the air pressure level inside the tire. Then, via a low-frequency radio, the sensors send the data back to the car’s computer. As soon as the tire pressure dips below the desired level, the computer is alerted.

Many old cars don’t have tire pressure sensors. However, they became mandatory in 2008, so all new cars have them.

As you can expect, a car part located near the wheel gets a lot of abuse. Over time, the tire pressure sensors will wear and tear, and eventually die.

Symptoms of a failing Tire Pressure Sensor

Tire pressure light comes on when the tires have adequate pressure

When the computer is alerted by the tire pressure sensors that one of the tires has inadequate pressure, it will illuminate a light on your dashboard. But that light will also often illuminate if the computer isn’t getting any information from the sensors. So, if you’ve made sure that your tires are at the right pressure, but the lights are still illuminated, it may be due to one of the sensors being faulty.

Tire pressure light does not come on

Your car will let you know when your tire pressure is low. If it doesn’t, it may be because the sensor has failed. So, if you notice that your tire is hilariously low on pressure, but your warning light hasn’t come on, it’s time for a new tire pressure sensor. And some air in those tires.

How urgent is a Tire Pressure Sensor replacement?

You can continue to drive a car with a faulty tire pressure sensor. You won’t be under any risk, as long as you keep an eye on your tires, so you can spot them when they’re running low on pressure. But if you’d rather not pay attention to your tires at all times, try not to put off this repair for too long.

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