Impreza GT F4-2.5L Turbo (2009)
Low Tire Pressure Indicator: Service and Repair
Tire Pressure Indicator Reset
The tire pressure monitoring system is NOT a substitute for manually checking tire pressure. The tire pressure should be checked periodically (at least
once monthly) using a tire gauge. After any change to tire pressure(s), the tire pressure monitoring system will not re-check tire inflation pressures
until the vehicle is first driven more than 20 MPH (32 km/h). After adjusting tire pressures, increase the vehicle speed to at least 20 mph (32 km/h) to
start the TPMS re-checking of the tire inflation pressures. If the tire pressures are now above the severe low pressure threshold, the low tire pressure
warning light should turn off a few minutes later. therefore, be sure to install the specified size for the front and rear tires.