Your motorcycle features Buell's second-generation Dynamic Digital Fuel Injection (DDFI II). This system allows for precise fuel and engine management under different operating conditions.

Fuel injected vehicles have no fuel valve or enrichener system. These functions are controlled by an electronic control module.

See Controls and Indicators → Instruments: Lightning Models → Dash Panel: Lightning Models (XB9SX shown). The red check engine lamp (4) is located in the indicator panel to the right of the tachometer. Its purpose is to indicate whether or not the engine management system is operating normally.

The check engine lamp normally illuminates when the motorcycle's ignition is first turned on. The lamp remains on for approximately four seconds at this time. During these four seconds, the engine management system runs a series of self diagnostics.

If the lamp remains continuously lit after the initial four seconds or if it begins blinking, see a Buell dealer. This indicates an event has occurred relating to the proper operation of the engine management system. If the engine lamp comes on at any other time, see a Buell dealer.

See Operation → Operating Recommendations: 2007 Lightning Models for more information on the check engine lamp function.

See Controls and Indicators → Instruments: Lightning Models → Dash Panel: Lightning Models (XB9SX shown). An amber lamp in the indicator panel to the right of the tachometer serves as a low fuel warning lamp (6). This lamp illuminates automatically when there is approximately 0.83 gallons/3.1 liters (XB12Ss/XB12STT) or 0.75 gallons/2.8 liters (all other models) of gasoline left in the tank. When the low fuel warning lamp illuminates, the reserve fuel odometer (F-trip) is activated and counts mileage traveled after low fuel indicator illumination.