1999 Ford F250 Owner's Manual - Page 8

Instrumentation WARNING LIGHTS AND CHIMES FUEL FILL LOW FUEL 40 30 20 40 20 60 50 80 60 70 100 120 3 2 4 5 ABS F H E L BRAKE 80 90 1 RPM X1000 SERVICE ENGINE SOON LOW RANGE 4X4 000000 140 160 MPH 0 0 0 0 km/h ! - + H 18 C 8 10 0 100 0 6 P RN D 21 DOOR AJAR Low fuel Illuminates as an early reminder of a low fuel condition indicated on the LOW fuel gauge. The light comes on when FUEL there is approximately 1/16th of a tank indicated on the fuel gauge (refer to Fuel Gauge in this chapter for more information). The ignition must be in the ON position for this lamp to illuminate. The lamp will also illuminate for several seconds after the ignition is turned to the ON position regardless of the fuel level. Service engine soon (Federal only) Your vehicle is equipped with a SERVICE computer that monitors the engine's ENGINE emission control system. This SOON system is commonly known as the On Board Diagnostics System (OBD I). This OBD I system protects the environment by ensuring that your vehicle continues to meet government emission standards. The OBD I system also assists the service technician in properly servicing your vehicle. The Check Engine/Service Engine Soon indicator light illuminates when the ignition is first turned to the ON position to check the bulb. If it comes on after the engine is started, one of the engine's emission control systems may be malfunctioning. The light may illuminate without a driveability concern being noted. The vehicle will usually be drivable and will not require towing. 8