2008 Subaru Impreza Owner's Manual - Page 270
2008 Subaru Impreza Manual
Page 270 highlights
7-48 Starting and operating Cruise control Cruise control enables you to maintain a constant vehicle speed without holding your foot on the accelerator pedal and it is operative when the vehicle speed is 25 mph (40 km/h) or more. Make sure the main switch is turned "OFF" when the cruise control is not in use to avoid unintentionally setting the cruise control. & To set cruise control NOTE If you press the main switch button while turning the ignition switch "ON", the cruise control function is deactivated and the "CRUISE" indicator light flashes. To reactivate the cruise control function, turn the ignition switch back to the "Acc" or "LOCK" position, and then turn it again to the "ON" position. Turbo models except WRX STI 1. Push the "CRUISE" main switch button. WARNING Do not use the cruise control under any of the following conditions. This may cause loss of vehicle control: . driving up or down a steep grade . driving on slippery or winding roads . driving in heavy traffic Non-turbo models WRX STI The " " indicator light on the combination meter will illuminate. 2. Depress the accelerator pedal until the vehicle reaches the desired speed.