a faulty tire pressure monitoring sensor with this directfit TPMS sensor designed for compatibility with Saturn Astra 2008 2009. The unit operates at 433MHz and is constructed from plastic, metal, and rubber for reliable installation and long service life. Key benefits Restores tire pressure monitoring function quickly by replacing a worn or damaged sensor. Simple swapin installation minimizes downtime and avoids the need for full sensor reprogramming in many vehicles. Durable mixedmaterial construction resists road wear while keeping weight and size suitable for standard valve locations. Product highlights Function: Tire pressure monitoring sensor (TPMS) Frequency: 433MHz Materials: Plastic, metal, rubber Compatibility: Fit for Saturn Astra 2008 2009 Package: Replacement sensor only; follow pairing steps after installation Installation and pairing procedure 1. Remove the old tire pressure sensor from the wheel following standard wheel removal and valve core procedures. 2. Install the sensor and reassemble the tire and wheel. 3. Park the vehicle and turn off the engine for about 20 minutes. Keep the remote key at least 5 meters away from the vehicle during this time. 4. Start the vehicle and drive at a steady speed above 25 km/h for 5 to 10 minutes to allow the vehicle to detect and match the TPMS sensor. 5. If outdoor temperature is below 0 degrees, matching may take longer. Please wait patiently for the matching to complete. Use cases and applications a nonresponsive TPMS sensor when the tire pressure warning light is on or when a sensor fails during routine service. Fitment during tire replacement or wheel refurbishment to upgrade all sensors at once. Maintain fleet vehicles by swapping defective sensors to restore monitoring capability across multiple vehicles with the same model year compatibility. Notes Follow standard tire and wheel safety practices during installation. Matching time can vary with temperature and vehicle model. If pairing does not complete, consult the vehicle service manual for any modelspecific relearn procedures.