As the name suggests, your tire pressure monitoring system (TPMS) light coming on typically means your tire pressure is low. However, sometimes it turns on due to a drastic drop or rise in temperature. So, when do you know to act urgently? If your light turns on merely because of a temperature change, your light will turn off within one day. If your light stays on, it could be due to a tire puncture causing a slow leak of air.
Your TPMS helps you to avoid potentially unsafe situations by monitoring the air pressure in your tires and alerting you when one of them drops by 25 percent or more below its recommended pressure. Your dashboard will display either the official TPMS symbol or a graphic indicating which tire is in need of air. It can be tough to tell if the air in a tire is too low or too high just by looking at it. When you see this light, bring your vehicle into Pep Boys for a tire pressure check.