2003 Ford Ranger Owner Guide 3rd Printing - Page 10

Instrument Cluster Instrument Cluster WARNING LIGHTS AND CHIMES Warning lights and gauges can alert you to a vehicle condition that may become serious enough to cause expensive repairs. A warning light may illuminate when a problem exists with one of your vehicle's functions. Many lights will illuminate when you start your vehicle to make sure the bulb works. If any light remains on after starting the vehicle, have the respective system inspected immediately. Check engine: The Check Engine indicator light illuminates when the CHECK ignition is first turned to the ON ENGINE position to check the bulb. 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. 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 CHECK the fuel cap may not be properly FUEL installed. Continued driving with CAP this light on may cause the Check Engine warning light to come on, refer to Fuel filler cap in the Maintenance and Specifications chapter. 10