2007 Dodge Ram 1500 Pickup Owner's Manual - Page 182

182 UNDERSTANDING THE FEATURES OF YOUR VEHICLE Average Fuel Economy (AVG ECO) Shows the average fuel economy since the last reset. Average fuel economy is a running average of the amount of fuel used and the distance the vehicle has traveled. When the fuel economy is reset, the display will momentarily blank. Then, the history information will be erased, and the averaging will continue from where it was before the reset. The reset value is based on a minimal amount of fuel used and the distance traveled from the previous drive cycle. The display may take several miles for this value to change dependent upon driving habits. Distance To Empty (DTE) Shows the estimated distance that can be traveled with the fuel remaining in the tank. This estimated distance is determined by weighted average of the instantaneous and average fuel economy, according to the current fuel tank level. This is not resettable NOTE: Significant changes in driving style or vehicle loading will greatly affect the actual drivable distance of the vehicle, regardless of the DTE displayed value. When the DTE value is less than 30 miles estimated driving distance, the DTE display will change to an alternating test display of "LO" and "FUEL". This display will continue until the vehicle runs out of fuel. Adding a significant amount of fuel to the vehicle will turn off the "LO FUEL" text and a new DTE value will be displayed, based on the current values in the DTE calculation and the current fuel tank level. NOTE: It is possible for DTE to display "LO FUEL" before the low fuel warning light turns on in the instrument cluster. This could occur because low fuel warning is set to a specified fuel tank volume and DTE is an estimated distance calculation based on fuel economy and remaining fuel tank volume.