Why Is My Tire Pressure Light On? Understanding Your TPMS and Common Causes

We’ve all been there—you start your car, and that little horseshoe-shaped light with an exclamation point pops up on your dashboard. Yep, it’s your tire pressure warning light, and while it might seem like a small issue, it plays a big role in keeping you safe on the road.

The Tire Pressure Monitoring System (TPMS) in your vehicle is designed to alert you when the pressure in one or more of your tires drops below the manufacturer’s recommended level. This isn’t just about convenience—it’s a major safety feature. Driving on under-inflated tires can lead to decreased fuel efficiency, uneven tire wear, poor handling, and even dangerous blowouts.

Common Reasons Your Tire Pressure Light Is On

1. Low Tire Pressure

This is the most straightforward reason. If your TPMS light is on, the first thing to do is check your tire pressure with a manual gauge or stop by a Burt Brothers location, where we’ll do it for free.

• Seasonal temperature changes: Tire pressure fluctuates with the weather. As temperatures drop in the fall and winter, so does the air pressure in your tires. For every 10-degree drop in temperature, tire pressure can decrease by 1-2 PSI. This is a common reason the light comes on first thing in the morning during cooler months.
• Slow leaks or punctures: Nails, sharp debris, or even a slightly loose valve stem can cause a gradual loss of pressure. These issues can be hard to detect on your own, but our technicians at Burt Brothers are trained to spot and fix them for free, fast.

2. Tire Pressure Light On But Tires Are Fine

Sometimes you check your tires, and they seem perfectly inflated—but that light is still glowing. Here’s why:

• Possible TPMS sensor malfunction: Sensors can fail over time, especially in older vehicles. A malfunctioning sensor might falsely trigger the warning light.
• Delayed sensor reset: Even after adjusting the tire pressure, the TPMS might need a few miles of driving to reset. If it doesn’t, a manual reset or professional recalibration may be needed.

3. Tire Pressure Light Always Comes On

If your TPMS light seems to have taken up permanent residence on your dashboard, it could point to:

• Faulty sensors or battery issues: TPMS sensors are powered by small internal batteries that can die after several years. Once the battery goes, the sensor needs to be replaced.
• TPMS system needing recalibration: After tire rotations, alignments, or suspension work, the system may need recalibration. Our ASE-certified technicians can handle that in no time.

4. Tire Pressure Light On After New Tires

Just got a fresh set of tires and now your TPMS light is on? Here’s what might be happening:

• Improper TPMS sensor installation: If the sensors weren’t reinstalled or reprogrammed correctly during the tire change, they might not communicate properly with your car’s system.
• Resetting the TPMS after tire replacement: Many vehicles require a TPMS reset after new tires are installed. If your installer skipped this step, Burt Brothers can help you get everything back in sync.

5. Tire Pressure Monitor Fault Warning

Sometimes the dashboard doesn’t just show the TPMS symbol—it’ll also say “Tire Pressure Monitor Fault” or something similar. This means the system itself isn’t working correctly.

• What does the TPMS light mean? It indicates that at least one sensor isn’t sending data to your vehicle’s computer.
• Diagnosing a TPMS system fault: Using advanced diagnostic tools, Burt Brothers can identify which sensor or part of the system is malfunctioning and provide a clear solution.

How to Check Your Tire Pressure Monitoring System

While your car’s TPMS is helpful, don’t rely on it 100% of the time. Here’s what you can do:

• Use a manual tire pressure gauge: Check your tire pressure at least once a month. Compare your readings with the recommended PSI listed on the driver’s side door sticker.
• Steps to reset your TPMS after inflating tires: Some vehicles reset automatically, while others require you to press a reset button (often found under the steering column or in the glovebox). Check your owner’s manual—or better yet, swing by Burt Brothers and we’ll help reset it for you.
• When to visit a mechanic for a TPMS diagnostic check: If the light stays on after resetting, or if you’re getting frequent warnings, it’s time to come have a pro take a look.

When to Seek Professional Help

While some TPMS issues can be DIY, others need expert attention. Here’s when to come see us at Burt Brothers:

• Signs of a failing TPMS: Frequent warnings, inconsistent readings, or dashboard messages that don’t go away.
• Trusted auto service providers for TPMS troubleshooting: With decades of experience and locations across Utah, Burt Brothers is your go-to shop for all things TPMS. Our technicians are not only trained but also genuinely care about keeping you safe on the road.

Preventative Tips to Keep Your Tire Pressure Light Off

Want to avoid seeing that light altogether? Try these maintenance tips:

• Regularly check and maintain proper tire pressure: Make it a habit to check your tires monthly and before long road trips. You can also stop by Burt Brothers for a free tire check.
• Ensure TPMS sensors are functioning correctly: Have them inspected during regular tire rotations or oil changes.
• How routine tire rotations and alignments impact TPMS performance: Improper rotations can confuse TPMS systems. At Burt Brothers, we make sure everything is recalibrated and road-ready after every service.

Stay Safe by Paying Attention to Your Tire Pressure Light

Your TPMS is more than just a dashboard annoyance—it’s a vital safety system that protects your tires, your fuel economy, and your life. Whether it’s due to cold weather, a nail in your tire, or a sensor that’s past its prime, ignoring that warning light is never a good idea.

At Burt Brothers, we’re here to help you take the guesswork out of car care. If your tire pressure light is on, schedule a check-up today. We’ll diagnose the problem, explain your options, and get you safely back on the road in no time.

Burt Brothers—Auto Care Done Better