2007 Mercury Grand Marquis Owner Guide 2nd Printing - Page 11

Instrument Cluster Check engine: The Check engine indicator light illuminates when the ignition is first turned to the ON position to check the bulb and to indicate whether the vehicle is ready for Inspection/Maintenance (I/M) testing. Normally, the ЉCheck engineЉ light will stay on until the engine is cranked, then turn itself off if no malfunctions are present. However, if after 15 seconds the ЉCheck engineЉ light blinks eight times, it means that the vehicle is not ready for I/M testing. See the Readiness for Inspection/Maintenance (I/M) testing in the Maintenance and Specifications chapter. Solid illumination after the engine is started indicates the On Board Diagnostics System (OBD-II) has detected a malfunction. Refer to On board diagnostics (OBD-II) in the Maintenance and Specifications chapter. If the light is blinking, engine misfire is occurring which could damage your catalytic converter. Drive in a moderate fashion (avoid heavy acceleration and deceleration) and have your vehicle serviced immediately by your authorized dealer. 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. Powertrain malfunction indicator (if equipped): Illuminates when a powertrain fault has been detected. Contact your authorized dealer as soon as possible. Check fuel cap (if equipped): Illuminates when the fuel cap may not be properly installed. Continued driving with this light on may cause the Check engine warning light to come on. Refer to Fuel filler cap in the Maintenance and Specifications chapter. 11 2007 Grand Marquis (grn) Owners Guide (post-2002-fmt) USA (fus)