2012 Subaru Forester Owner's Manual - Page 452

11-30 Maintenance and service the temperature in the garage and the temperature outside. By way of example, the following table shows the required tire pressures that correspond to various outside temperatures when the temperature in the garage is 608F (15.68C). Example: Tire size: P215/65R16 96H Standard tire pressures: Front: 30 psi (210 kPa, 2.1 kgf/cm2) Rear: 29 psi (200 kPa, 2.0 kgf/cm2) Garage temperature: 608F (15.68C) Outside temperature Adjusted pressure [psi (kPa, kgf/cm2)] Front 308F (−18C) 108F (−128C) −108F (−238C) 33 (230, 2.3) 35 (240, 2.4) 37 (255, 2.55) Rear 32 (220, 2.2) 34 (235, 2.35) 36 (250, 2.5) Outside temperature Adjusted pressure [psi (kPa, kgf/cm2)] Front Rear 33 (230, 2.3) 35 (240, 2.4) 37 (255, 2.55) 35 (240, 2.4) 37 (255, 2.55) 39 (270, 2.7) tires can cause the low tire pressure warning light to turn 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 illuminate steadily after blinking for approximately one minute. When a tire is replaced, adjustments are necessary to ensure continued normal operation of the tire pressure monitoring system. As with wheel replacement, therefore, you should have the work performed by a SUBARU dealer. 308F (−18C) 108F (−128C) −108F (−238C) Example: Tire size: P225/55R17 95H Standard tire pressures: Front: 32 psi (220 kPa, 2.2 kgf/cm2) Rear: 30 psi (210 kPa, 2.1 kgf/cm2) Garage temperature: 608F (15.68C) If the low tire pressure warning light illuminates 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 turns off a few minutes later. If the low tire pressure warning light does not turn off, the tire pressure monitoring system may not be functioning normally. In 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