2005 Subaru Legacy Owner's Manual - Page 549

Maintenance and service following table shows the required tire pressures that correspond to various outside temperatures when the temperature in the garage is 60°F (15.6°C). Standard tire pressures: Front: 32 psi (220 kPa, 2.2 kgf/cm2) Rear: 30 psi (210 kPa, 2.1 kgf/cm2) Garage temperature: 60°F (15.6°C) Outside temperature Adjusted pressure [psi (kPa, kgf/cm2)] front 30°F (-1°C) 10°F (-12°C) -10°F (-23°C) 35 (240, 2.4) 37 (255, 2.55) 39 (270, 2.7) rear 33 (230, 2.3) 35 (245, 2.45) 37 (260, 2.6) this event, go to a SUBARU dealer to have the system inspected as soon as possible. While the vehicle is driven, friction between tires and the road surface causes the tires to warm up. After illumination of the low tire pressure warning light, any increase in the tire pressures caused by an increase in the outside air temperature or by an increase in the temperature in the tires can cause the low tire pressure warning light to go off. System resetting is necessary when the wheels are changed (for example, a switch to snow tires) and new TPMS valves are installed on the newly fitted wheels. Have this work performed by a SUBARU dealer following wheel replacement. It may not be possible to install TPMS valves on certain wheels that are on the market. Therefore, if you change the wheels (for example, a switch to snow tires), use wheels that have the same part number as the standard-equipment wheels. Without four operational TPMS valve/sensors on the wheels, the TPMS will not fully function and the warning light in the instrument panel will flash. When a tire is replaced, adjustments are necessary to ensure continued normal operation of the tire pressure monitoring system. As with wheel replacement, there- If the low tire pressure warning light comes on when you drive the vehicle in cold outside air after adjusting the tire pressures in a warm garage, re-adjust the tire pressures using the method described above. Then, increase the vehicle speed to at least 20 mph (32 km/ h) and check to see that the low tire pressure warning light goes off a few minutes later. If the low tire pressure warning light does not go off, the tire pressure monitoring system may not be functioning normally. In 11-50