Does Tire Pressure Monitoring System Indicate Which Tire is Low?
Understanding how tire pressure monitoring systems (TPMS) alert you about low tire pressure.
How Tire Pressure Monitoring Systems Work
Most modern vehicles are equipped with a Tire Pressure Monitoring System (TPMS) that alerts drivers when tire pressure is low. However, the functionality of these systems can vary by vehicle make and model.
Generally, TPMS provides a warning light on the dashboard when it detects that one or more tires are below the recommended pressure. This alert typically does not specify which tire is low, leaving drivers to check each tire individually.
Types of TPMS
There are two main types of TPMS: direct and indirect. Direct TPMS uses sensors in each tire to measure the actual pressure and can sometimes indicate which tire is low. Indirect TPMS, on the other hand, estimates tire pressure based on wheel speed and does not provide specific tire information.
If your vehicle has direct TPMS, it may display which tire is low on the dashboard, but this is not guaranteed. Always refer to your owner's manual for specifics about your vehicle's system.
What to Do When You Get an Alert
When you receive a low tire pressure alert, it's important to check the pressure of all tires, including the spare if applicable. Use a reliable tire pressure gauge to ensure each tire is inflated to the manufacturer's recommended pressure, which can usually be found on a sticker inside the driver's door or in the owner's manual.
If you find a tire is low, inflate it to the correct pressure. If the alert persists after inflating, or if you notice a significant drop in pressure again, it may indicate a leak or other issue that requires professional inspection.
Answered from our EPA fuel data and general, well-established fuel facts in response to real driver questions. Anything car-specific — especially whether premium is required vs recommended — is in your owner's manual, so we point you there instead of guessing.
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EPA/DOE FuelEconomy.gov data retrieved 2026-07-24.