Back to all

Always on Guard (TMPS)

September 15, 2024

One of the most important things you can do to keep your vehicle running safely is to make sure your tires are properly inflated.  If one or more is vastly over- or underinflated, that has the potential to cause major handling problems and may result in a dangerous accident.

All vehicles in recent years are equipped with Tire Pressure Monitoring Systems, or TPMS.  One system uses small sensors in the tires that continually check the pressure in each tire.  That sensor sends a signal to computers in your vehicle which turns on an instrument panel light warning of low pressure when at least one is very low. Or it may update a numeric reading on your instrument panel which gives you an approximation of how many PSI (pounds per square inch) of air is in each tire. 

Another system works with your antilock brake system to measure the size of your vehicle’s tires.  When one wheel is going faster than another, it will spin faster. A computer sees that and alerts you that tire’s diameter is smaller than the others and therefore must be underinflated.

No matter what system you have, it’s also helpful for you to know how much pressure each tire is supposed to be inflated to.  You can find that on a label on the driver’s side door sill. In addition, the TPMS system should not be used as a substitute for checking your tires with a tire gauge since the TPMS accuracy usually isn’t quite as precise.  Keep in mind that tire sensors can fail, so each system acts as a backup for the other. 

Since many vehicles these days don’t have spare tires, it’s good to know that your TPMS can warn you if you have a leak in one of your tires.  If you get a low-pressure warning, many systems will tell you which tire is low, so you can do your own visual check.  Often you can see if you’ve picked up a nail or a screw if it’s sticking out of the tread or near the sidewall.

Being able to receive an early warning from your vehicle of abnormal tire pressure may give you a chance to safely drive to a service center before your tire slowly goes completely flat (which can ruin the tire and badly damage the rim). It also may ultimately prevent you from being stranded somewhere with a flat tire or, most importantly, having a sudden blowout on the road. 

Top Tech Auto Repair Clawson
664 S Rochester Rd
Clawson, Michigan 48017
248-589-0980
http://www.toptechautorepairclawson.com

Need Service?

More articles from Top Tech Auto Repair Clawson

Command Performance (Engine Air Filter)

January 26, 2025

The internal combustion engine in your vehicle counts on two things that mix together to be burned in the engine for power: fuel and air. Both are important, of course. If you run out of fuel, your engine wont run at all. Since theres plenty of air around, you wont run out of air, but you coul... More

A Head Start on Starting (Battery Testing)

January 19, 2025

If your vehicle isn't starting or doesn't sound like it used to when you crank it, the culprit may be the battery. You may have left a light on, or something plugged into one of charging ports. Maybe you accidentally left your vehicle in the "on" or "accessory" position when you last got out. M... More

Visibility Disaster! (Windshield Washer Pump Replacement)

January 12, 2025

Let's say you live in a cold climate where the snowy, icy weather challenges you to clear the salt and debris tossed up on your windshield. You push your windshield washer switch expecting a good stream of fluid so the blades can wipe the glass clean. Yet nothing comes out. Nada, zip. What's g... More