Driving and Operating 9-25
very limited engine operation. EMM
will force the engine to run, even if
there is a charge to power the
vehicle. When EMM is needed, the
EMM Request screen appears on
the center stack display at vehicle
start.
If Yes is selected, EMM will begin.
The engine will run for a set amount
of time without turning off. During
EMM, a DIC message displays to
show the EMM percentage
complete.
If No is selected, the EMM Request
screen will appear when the vehicle
is next started. The EMM request
can be delayed for only one day.
If the EMM request was delayed for
one day, EMM will automatically
start the engine at the next vehicle
start. An EMM Notification screen
will appear in the center stack
display.
If the vehicle shuts off during EMM,
it will restart the next time the
vehicle is driven. A message
displays to indicate that EMM is
active.
If EMM is required and the fuel level
is low, EMM may eventually empty
the fuel tank if fuel is not added.
This will result in reduced, or no
power. An adequate fuel level must
be maintained in the vehicle to keep
it operational. See Propulsion Power
Messages on page 5‑50.
Fuel Maintenance Mode (FMM)
Fuel Maintenance Mode (FMM)
tracks average fuel age. Old fuel
can cause engine problems. If low
engine usage causes average fuel
age to exceed approximately
one year, FMM will run the engine
to use up the old fuel. The engine
will run until enough fresh fuel is
added to bring the average fuel
age into an acceptable range.
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