TPMS Wheel Pressure Sensor 🔧

This electronic wheel sensor is an important safety part for modern vehicles. It monitors air pressure inside the tire and helps the driver keep correct inflation. Proper tire pressure improves road grip, braking distance, fuel economy, and tire life. For Mercedes-Benz models using direct TPMS, this sensor gives the control unit accurate real-time data from each wheel.

Why This Part Is Needed ✅

Low or uneven tire pressure can make the car unstable, especially at speed or during cornering. The sensor warns the driver before the tire becomes dangerously soft. It is also needed after wheel replacement, valve damage, battery failure, or when the TPMS warning light stays on.

How It Works ⚙️

The sensor is fitted to the wheel valve inside the rim. While driving, it measures pressure and temperature, then sends a radio signal to the vehicle’s TPMS receiver. The car compares the readings with the programmed safe values and shows a warning if pressure drops below the limit.

Signs of a Faulty Sensor 🚨

If the unit fails, the dashboard tire pressure light may remain on, pressure readings can disappear, or the system may show incorrect wheel data. A broken sensor means the vehicle cannot reliably detect a soft tire, increasing wear, fuel use, and the risk of tire damage or loss of control.