Introduction:

A TPMS light, which stands for Tire Pressure Monitoring System light, indicates that one or more of your vehicle's tires are significantly underinflated, meaning the air pressure is below the recommended level, and could potentially lead to tire damage or safety issues if not addressed; a solid TPMS light usually means low tire pressure, while a flashing light often signifies a malfunction with the TPMS system itself.

Both overinflation and underinflation can cause premature treadwear and possible tire failure. Overinflation can result in decreased traction, premature wear, and the inability to absorb road impact. Overinflated tires will show premature wear in the center of the tread. On the other hand, underinflation will cause sluggish tire response, decreased fuel economy, excessive heat buildup, and tire overload. An underinflated tire will show premature wear on both sides of the tread edges or “shoulders”.

If you’re learning about tire pressure sensors for the first time, finding the TPMS indicator on your dashboard is simple. It’s a horseshoe-shaped light with an exclamation point in the center.

Key points about TPMS light:

• What it means:

The purpose of the TPMS (Tire Pressure Monitoring System) is to alert you when tire pressure is too low and could create unsafe driving conditions. If the light is illuminated, it means your tires could be underinflated, which can lead to undue tire wear and possible tire failure. It's important to understand the importance of proper tire inflation, and how TPMS can help you avoid a dangerous situation.

• Flashing vs. solid light:
  • Solid light: Indicates low tire pressure in one or more tires. 
  • Flashing light: Usually signifies a problem with the TPMS sensor itself, like a faulty sensor, low battery, or a system malfunction, and requires professional attention.

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• What to do when the TPMS light is on:
  • Check tire pressure: Use a tire pressure gauge to check the air pressure in all tires, including the spare. 
  • Add air as needed: If any tire is underinflated, add air at a gas station until it reaches the recommended pressure. 
  • Consult a mechanic: If the TPMS light remains on after adjusting tire pressure, or if it is flashing, consult a mechanic to diagnose the issue, as it might be a faulty sensor.