If the tire pressure warning light on your Ford stays on even after you've checked and corrected your tire pressure, the sensor itself is the likely culprit. TPMS sensors are battery-powered devices mounted inside each wheel, and like any battery-powered part, they eventually wear out or fail.
1. Light Stays On After Correcting Tire Pressure
This is the clearest sign. If you've properly inflated all four tires and the warning persists, one or more sensors are likely malfunctioning or reporting inaccurate readings.
2. Warning Appears After Tire Service
TPMS sensors can be damaged during tire changes, rotations, or repairs if not handled carefully. If the light appeared right after a shop visit, a sensor may have been knocked loose or cracked during the job.
3. Intermittent Warnings
A sensor nearing the end of its battery life often triggers inconsistent warnings before failing completely — these sensors aren't designed to be serviced, only replaced as a full unit.
4. Important: TPMS Sensors Can't Be Reused
Unlike many parts, once a TPMS sensor is removed from the wheel, it typically can't be reinstalled and expected to seal and function properly again. If a sensor has been removed for any tire service, plan on replacing it.
5. Know Your Frequency
This particular sensor operates on 315MHz for most applications, though Mustang Mach-E models (non-Shelby) may use either 315MHz or 902MHz depending on configuration — always confirm your vehicle's specific requirement before ordering.
Why Genuine Motorcraft Matters
Genuine Motorcraft TPMS sensors are built to communicate reliably with your Ford's factory-programmed module without the compatibility or signal issues that can come with generic aftermarket sensors.
👉 Shop the Genuine Motorcraft TPMS-35 Tire Pressure Sensor — fast worldwide shipping, and a free step-by-step install video included with every order.