FORD 2010 Fusion Hybrid v.2 - Manual (Page 10)

Frequently asked questions
Question Answer
What are the series of
clicks from the cargo area
when I first turn the key in
the ignition? The high voltage battery is electrically
isolated from the rest of the vehicle when
the key is off. When the key is turned to
on, high voltage contactors inside the
battery are closed to make the electricity
available to the motor/generator and
enable the vehicle to drive. The clicks are
the sound of these contactors as they
close and open during start up and shut
down.
Why does the engine
sometimes start at key-on? The vehicle’s computer will determine if
an engine start is required at key-on.
Silent Key Start (SKS) will start the
engine if it is necessary for cabin heating,
windshield defrost, or if the outside
temperature is low.
Why does it take a long
time before the engine
shuts down? There are several reasons the engine
stays on for an extended amount of time
when it is first started. One common
reason is to ensure that the emissions
components are warm enough to
minimize tailpipe emissions. As the
climate gets cooler, this “engine-ON” time
is extended.
Why does my engine never
shut down above 47 mph
(75 km/h)? The engine is required to turn on above
this speed to protect the transmission
hardware.
Introduction
10
2010 Fusion Hybrid (hfv)
Owners Guide, 2nd Printing
USA (fus)