2003 Ford Crown Victoria Owner's Manual - Page 11

Instrument Cluster Light remains on: Temporary malfunctions may cause your light to illuminate. Examples are: 1. The vehicle has run out of fuel. 2. Poor fuel quality or water in the fuel. 3. The fuel cap may not have been properly installed and securely tightened. These temporary malfunctions can be corrected by filling the fuel tank with high quality fuel of the recommended octane and/or properly installing and securely tightening the fuel cap. After three driving cycles without these or any other temporary malfunctions present, the light should turn off. (A driving cycle consists of a cold engine startup followed by mixed city/highway driving.) No additional vehicle service is required. If the light remains on, have your vehicle serviced at the first available opportunity. Light is blinking: Engine misfire is occurring which could damage your catalytic converter. You should drive in a moderate fashion (avoid heavy acceleration and deceleration) and have your vehicle serviced at the first available opportunity. Under engine misfire conditions, excessive exhaust temperatures could damage the catalytic converter, the fuel system, interior floor coverings or other vehicle components, possibly causing a fire. Check fuel cap Illuminates when the fuel cap is not CHECK installed correctly. Check the fuel FUEL cap for proper installation. When CAP the fuel filler cap is properly re-installed, the light(s) will turn off after a period of normal driving. Continuing to operate the vehicle with the check fuel cap light on, or a mis-installed fuel cap can activate the Service Engine Soon/Check Engine warning light. It may take a long period of time for the system to detect an improperly installed fuel filler cap. For more information, refer to Fuel filler cap in the Maintenance and specifications chapter. 11 2003 Crown Victoria (cro) Owners Guide (post-2002-fmt) USA English (fus)