Among the many car safety innovations, one of the most helpful is the tire pressure monitoring system (TPMS) warning light. This dashboard feature is shaped like a horseshoe with an exclamation point inside of it, and since 2008 has been a common feature in vehicles. As its name suggests, it’s designed to alert drivers when one or more of their tires become under-inflated or over-inflated. Like the “check engine” light, if the TPMS light turns on, don’t ignore it. Here’s why you should always acknowledge and check it.

Why You Shouldn’t Drive with the TPMS Light On

Why it’s Dangerous

As mentioned, the TPMS warning light turns on once the pressure shifts from its intended range. The exact percentage differs depending on the make and model. Some trigger when the pressure varies by 25% of the manufacturer’s recommendations, but others react to as little as 10%. Either way, driving with under-inflated or over-inflated tires is never recommended. Aside from a dangerous blowout, both cause poor handling, premature wear, and reduced fuel economy. If you want to avoid the expense of early replacements or constant gas refills, always maintain the pressure.

What to Do 

If your TPMS light illuminates, don’t panic. The first task is to check the pressure in your tires. You can do so when you get home, or, if it’s too far and you don’t have a tire gauge, at the nearest gas station. Check all four wheels. Even if you have a newer vehicle with an updated TPMS that reveals which wheel is causing the issue, check on all of them. If any deviate beyond the manufacturer recommendations, adjust the pressure. If it’s under-inflated, fill it up with more air; if it’s overinflated, release some of it. Then, once you finish, recheck the pressure to confirm it’s within the proper range. Assuming everything is correct, the TPMS warning light will turn off. If it doesn’t, or it flickers and then stays on, the system itself is malfunctioning. If that’s the case, it will require an automotive technician’s expertise.

If your TPMS warning light turns on and changing the pressure didn’t help, make an appointment with Flat on the Spot Mobile Tire Service. Whether you need repairs or replacements, this Anchorage, AK, family business will do it all. They can service more than just tires! If you need an oil change, engine repairs, or full diagnostics, their highly trained technicians will handle the job. You can learn more about their auto repair services online and if you’d like to book an appointment, call them today at (907) 242-0086.