Ford 2008 Mariner Hybrid Owner's Manual page 11

Question
Why does my engine never shut
down above 40 mph (64 km/h)?
Why does my engine stay ON
when it's extremely cold outside?
Why does my engine rev up so
high sometimes when I accelerate?
What does it mean when my
power assist gauge moves to the
right? To the left?
2008 Mariner Hybrid (mhv)
Owners Guide (post-2002-fmt)
USA (fus)
Introduction
Answer
The engine is required to turn on
above this speed to protect the
transaxle hardware.
In order to ensure that the climate
control system can begin heating
the cabin and/or defrosting the
windshield as soon as a driver
requests it, the engine coolant
temperature has to be kept
sufficiently hot. Keeping the
engine on is required to maintain
the correct minimum temperature.
Your vehicle's engine and
transmission are designed to
deliver the power you need at the
most efficient engine speed. This
may be higher than expected
during heavy accelerations, and
may fluctuate during steady state
driving. These are characteristics
of the Atkinson engine cycle and
the eCVT transaxle technology
that help maximize your hybrid's
fuel economy.
Electricity is coming out of the
battery when the gauge moves to
the right. Electricity is going into
the battery when the gauge moves
to the left.
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