2005 Subaru Impreza Owner's Manual - Page 152

Instruments and controls REV indicator light and buzzer (WRXSTi) speed enters the tachometer's red zone. Setting the alarm-level engine speed UG3522BA UG3036AA The REV alarm system issues a warning using the REV indicator light (and a buzzer if additionally selected) when the engine speed reaches a level previously set using the REV setting knob. If you press the trip knob when the ignition switch is in the "LOCK" position, the outside temperature indicator will show the engine speed that has already been set. NOTE Even if the REV alarm system is not set, the REV indicator light will come on whenever the engine 1. Turn the REV setting knob clockwise or counterclockwise, then release it and let it return to its initial position. The buzzer will sound. The REV alarm system is now ready to be set. 2. Turn the REV setting knob to select the desired alarm-level engine speed. At this time, the outside temperature indicator will show the engine-speed setting. Counterclockwise (-) for less than 0.5 second: Speed setting changes downward by 100 rpm. - CONTINUED - 3-13