However, they might require more frequent checks to ensure accuracy. Cost-Effective: Indirect sensors are less expensive than direct sensors.Low Maintenance: These sensors don’t have batteries, which means less maintenance.Less Accurate: Since indirect TPMS sensors estimate the pressure based on speed sensor data, they can sometimes give inaccurate readings.Instead, they use your vehicle’s anti-lock braking system’s speed sensors to calculate tire pressure. Indirect TPMS sensors don’t measure tire pressure. Indirect TPMS Uses The ABS Wheel Speed Sensor Indirect TPMS Sensors However, their accuracy often outweighs the cost difference for many drivers. Cost: These sensors are a bit more expensive than their indirect counterparts.When the battery dies, you’ll need to replace the whole sensor. Battery Powered: Direct TPMS sensors are powered by batteries that usually last 5-10 years.Accurate Readings: Because these sensors measure the pressure directly, their readings are very accurate.Each sensor measures the actual air pressure and reports it to your vehicle’s computer. Direct TPMS Sensor Example Direct TPMS Sensorsĭirect TPMS sensors are located inside your tires. Now that you know what TPMS sensors are and why they’re essential, let’s talk about the two main types you might encounter: direct and indirect TPMS sensors. Fuel Efficiency: Under-inflated tires make your vehicle work harder, which means it uses more gas.Longevity: Correct tire pressure helps your tires last longer, saving you from buying new ones ahead of schedule.Safety: Properly inflated tires grip the road better, which means better control and fewer accidents. You might be wondering, why all this fuss over tire pressure? Well, here are a few key reasons: This warning gives you time to inflate your tires before things get dangerous or costly. When the pressure in one or more tires drops 25% below the recommended level, your vehicle’s dashboard flashes a warning symbol. They keep an eye on your tire pressure and send that information to your vehicle’s computer. TPMS sensors are clever little devices installed inside your car or truck’s tires. Let’s dive deeper into what they are, why they’re so important, and the types we commonly encounter. TPMS, short for Tire Pressure Monitoring System, is like your vehicle’s early warning system for its tires.
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