2003 Subaru Outback Owner's Manual - Page 134

J Temperature gauge CAUTION If the pointer exceeds the normal operating range, safely stop the vehicle as soon as possible. See "In case of emergency" in chapter 9. HB2012BB The temperature gauge shows engine coolant temperature when the ignition switch is in the "ON" position. The coolant temperature will vary in accordance with the outside temperature and driving conditions. We recommend that you drive moderately until the pointer of the temperature gauge reaches near the middle of the range. Engine operation is optimum with the engine coolant at this temperature range and high revving operation when the engine is not warmed up enough should be avoided. Warning and indicator lights Several of the warning and indicator lights come on momentarily and then go out when the ignition switch is initially turned to the "ON" position. This permits checking the operation of the bulbs. Apply the parking brake and turn the ignition switch to the "ON" position. The following lights come on: 3-10