2009 Subaru Impreza Owner's Manual - Page 260

7-40 Starting and operating system controls each brake through the ABS, whenever the ABS stops operating due to a malfunction in that electrical system, the Vehicle Dynamics Control will also become unable to control all four brakes. Thus Vehicle Dynamics Control system operation halts and the warning light illuminates. Although both the Vehicle Dynamics Control system and the ABS will be inoperable in this situation, it will still be possible to stop the vehicle using normal braking. The Vehicle Dynamics Control system and the ABS do not adversely affect operation of the vehicle in any way when they are inoperable; however should such a situation occur, drive with care and have an authorized SUBARU dealer carry out an inspection of those systems at the first available opportunity. ! Vehicle Dynamics Control OFF indicator light (yellow) This light illuminates to indicate that the Vehicle Dynamics Control system is in non-operation mode. This does not constitute failure of the Vehicle Dynamics Control system. minutes have passed to allow the engine to heat up sufficiently. ! Traction Control OFF indicator light (green - WRX STI) This light illuminates to indicate that the Traction Control System is in non-operation mode. This does not constitute failure of the Vehicle Dynamics Control system. NOTE . The indicator light may remain illuminated for a while after the engine has been started, especially in cold weather. This occurs because the engine has not yet warmed up and is completely normal. The light will turn off when the engine has reached a suitable operating temperature. . When an engine problem occurs and the CHECK ENGINE warning light/ malfunction indicator lamp illuminates, the indicator light will also illuminate. The following situations could indicate a malfunction of the Vehicle Dynamics Control system; if either should occur, have an authorized SUBARU dealer carry out an inspection of that system at the first available opportunity. . The indicator light does not illuminate when the ignition switch is turned to the "ON" position. . The indicator light fails to turn off after the engine is started, even when several & Vehicle Dynamics Control mode switch (WRX STI) NOTE When the warning light illuminates and turns off in the following way, it indicates that the Vehicle Dynamics Control system is operating normally. . Although illuminating after the engine has been started, the warning light quickly turns off and remains off. . The warning light illuminates when the vehicle is being driven and then it then turns off and remains off. When the switch is pressed briefly or for more than 2 seconds during engine operation, the mode of the Vehicle Dynamics Control System will be changed.