2008 Subaru Impreza Owner's Manual - Page 138

3-22 Instruments and controls illuminates steadily after blinking for approximately one minute, promptly contact a SUBARU dealer to have the system inspected. & ABS warning light The ABS warning light illuminates when the ignition switch is turned to the "ON" position and turns off after approximately 2 seconds. This is an indication that the ABS system is working properly. your SUBARU dealer. With a vehicle equipped with an EBD system, the ABS warning light illuminates together with the brake system warning light if the EBD system becomes faulty. For further details of the EBD system fault warning, refer to "Brake system warning light". CAUTION The tire pressure monitoring system is NOT a substitute for manually checking tire pressure. The tire pressure should be checked periodically (at least monthly) using a tire gauge. After any change to tire pressure(s), the tire pressure monitoring system will not re-check tire inflation pressures until the vehicle is first driven more than 20 mph (32 km/h). After adjusting the tire pressures, increase the vehicle speed to at least 20 mph (32 km/h) to start the TPMS re-checking of the tire inflation pressures. If the tire pressures are now above the severe low pressure threshold, the low tire pressure warning light should go off a few minutes later. Therefore, be sure to install the specified size for the front and rear tires. CAUTION If the warning light behaves as follows, the ABS system may not work properly. When the warning light is on, the ABS function shuts down; however, the conventional brake system continues to operate normally. . The warning light does not illuminate when the ignition switch is turned to the "ON" position. . The warning light illuminates when the ignition switch is turned to the "ON" position, but it does not go out even when the vehicle speed exceeds approximately 8 mph (12 km/h). . The warning light illuminates during driving. If any of these conditions occur, have the ABS system repaired at the first available opportunity by NOTE If the warning light behavior is as described in the following, the ABS system may be considered normal. . The warning light illuminates right after the engine is started but goes out immediately, remaining off. . The warning light remains on after the engine has been started, but it goes out when the vehicle speed reaches approximately 8 mph (12 km/h). . The warning light illuminates during driving, but it goes out immediately and remains off. When driving with an insufficient battery voltage such as when the engine is jump started, the ABS warning light may illuminate. This is due to the low battery voltage and does not indicate a malfunction. When the battery becomes fully charged, the light will go out.