2009 Subaru Impreza Owner's Manual - Page 135

3-20 NOTE Instruments and controls This light also illuminates when the fuel filler cap is not tightened until it clicks. If you have recently refueled your vehicle, the cause of the CHECK ENGINE warning light/malfunction indicator lamp illuminating could be a loose or missing fuel filler cap. Remove the cap and retighten it until it clicks. Make sure nothing is interfering with the sealing of the cap. Tightening the cap will not make the CHECK ENGINE warning light turn off immediately. It may take several driving trips. If the light does not turn off, take your vehicle to your authorized SUBARU dealer immediately. ! If the light is blinking If the light is blinking while driving, an engine misfire condition has been detected which may damage the emission control system. To prevent serious damage to the emission control system, you should do the following. . Reduce vehicle speed. . Avoid hard acceleration. . Avoid steep uphill grades. . Reduce the amount of cargo, if possible. The CHECK ENGINE warning light may stop blinking and illuminate steadily after several driving trips. You should have your vehicle checked by an authorized SUBARU dealer immediately. "Engine overheating" F9-13. This coolant temperature low indicator light/coolant temperature high warning light has the following two functions: . Illumination in BLUE indicates insufficient warming up of the engine . Illumination in RED indicates overheating condition of the engine For the system check, this indicator light/ warning light illuminates in red for approximately 2 seconds when the ignition switch is turned to the "ON" position. After that, if the coolant temperature is low, this indicator light/warning light changes to blue and maintains illumination in blue. This blue illuminated light turns off when the engine is sufficiently warmed up. If the engine is overheated, this indicator light/warning light illuminates in red immediately. At this time, safely stop the vehicle as soon as possible, and refer to the emergency steps for the case of engine overheating. Refer to "Engine overheating" F9-13. After that, have the system checked by your nearest SUBARU dealer. & Coolant temperature low indicator light (nonturbo models)/Coolant temperature high warning light (non-turbo models) CAUTION . After turning the ignition switch to the "ON" position, if this indicator light/warning light remains illuminated in RED for approximately more than 2 seconds, the electrical system may be malfunctioning. Immediately contact your SUBARU dealer for an inspection. . If this indicator light/warning light illuminates in RED while driving, safely stop the vehicle as soon as possible, and refer to the emergency steps for the case of engine overheating. After that, have the system checked by your nearest SUBARU dealer. Refer to