Jeep 2012 Grand Cherokee - Owner Manual - Manual (Page 314)

(MDS) (if equipped) allows the engine to operate on four
cylinders, or if you are driving in a fuel efficient manner.
This feature allows you to monitor when you are driving
in a fuel efficient manner, and it can be used to modify
driving habits in order to increase fuel economy.
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 a weighted average of the instantaneous
and average fuel economy, according to the current fuel
tank level. DTE cannot be reset through the SELECT
button.
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 (48 km)
estimated driving distance, the DTE display will change
to a “LOW FUEL” message. This display will continue
until the vehicle runs out of fuel. Adding a significant
amount of fuel to the vehicle will turn off the “LOW
FUEL” message and a new DTE value will display.
Fuel Saver Mode — On
312 UNDERSTANDING YOUR INSTRUMENT PANEL