If the light stays on, it’s important not to ignore it. It should come on momentarily when you start the car, but turn off once the computer senses the tire pressures are okay. In a Subaru, the TPMS light looks like a semi-circle with an exclamation point. If you fill up to the indicated pressure while warm, you will find that your tires are underinflated the next day after they cool off. That’s why filling your tires to the indicated pressure while cold is important. As your wheels rotate, the air inside warms up and expands, raising the tire pressure. When the weather is cold, the air takes up less space in the tire. That number indicates the tire pressure in pounds per square inch (PSI). Your tires should be set to the pressure indicated on the driver’s side door jamb or in the owner’s manual. In any car, the TPMS tracks the air pressure of each tire. Here’s what it means when you see the Tire Pressure Monitoring System (or TPMS) light in a Subaru. You’ve likely seen everything from the red gas pump icon indicating low fuel to the check engine light, which could mean any number of things. Do I need to check the TPMS if I change wheels and tires?Īll kinds of warning lights can pop up on your Subaru dashboard.How do I reset the tire pressure light in my Subaru?.What makes the TPMS light in a Subaru come on?.What does a Tire Pressure Monitoring System do?.
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