Lincoln 2016 MKZ HYBRID Owner's Manual page 177

EcoSelect allows your vehicle to operate
more efficiently. You will notice:
• Less aggressive heating and cooling.
Frequently Asked Questions
What are the series of clicks from the cargo area when I first turn the
key in the ignition?
Why does the engine sometimes start at key-on?
Why does it take a long time before the engine shuts down?
Why does my engine never shut down above 85 mph (137 km/h)?
MKZ Hybrid (CC9) Hybrid Electric Vehicle (HEV), Canada/United States of America, enUSA, First Printing
Unique Driving Characteristics
• Softer acceleration.
• More regenerative braking.
Question
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The high voltage battery is electrically isolated from the rest of the
vehicle when the key is off. When you turn the key to on, high voltage
contactors inside the battery are closed to make the electricity avail-
able 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.
The vehicle's computer will determine if an engine start is required
at key-on. Silent key start will start the engine if it is necessary for
cabin heating, windshield defrost, or if the outside temperature is low.
There are several reasons the engine stays on for an extended amount
of time when you first start it. 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.
The engine is required to turn on above this speed to protect the
transmission hardware.
174
Changes in engine behavior.
ECO Cruise control activation. See
Cruise Control (page 214).
Answer