What causes a Tire Pressure Sensor to fail?

Why Tire Pressure Sensors Fail – And When to Replace Them

Tire pressure sensors, also known as TPMS sensors, help keep you safe by alerting you when tire pressure is too low. But over time, these sensors can stop working—causing that annoying dashboard light to stay on even after you’ve aired up your tires.

At Joe’s Slinger Service, we regularly help drivers with TPMS problems. If your tire light is on and won’t turn off, here are a few reasons your sensor might be failing:

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1. Dead Battery Inside the Sensor
Most TPMS sensors use a sealed battery that lasts 5–10 years. Once the battery dies, the sensor won’t send signals to your car’s computer. This is the most common reason we replace sensors in our Slinger WI auto repair shop.

2. Damage from the Road or Installation
Wisconsin roads can be tough on your tires. Hitting potholes, curbs, or even a careless tire install can damage a sensor.

3. Salt Corrosion
Our winter road salt can corrode metal valve stems, especially on older sensors. Corrosion can cause the sensor to fail—or create a slow air leak.

4. Improper Programming
If your tires were rotated or replaced and your TPMS light came on right after, it could be that one or more sensors weren’t reset correctly.

5. Sensor Age
Like many parts, sensors wear out over time. If your vehicle is 7+ years old and you’ve never replaced the sensors, it may be time.

If your TPMS light is flashing or staying on, stop in and let our team take a look. We offer TPMS testing and sensor replacement for all makes and models—with fast service and honest advice.