
The INFINITI Direct Response Hybrid® System
combines the power of a gasoline engine and an
electric motor to help minimize fuel consumption
and emissions.
Depending on driving conditions, the vehicle runs
on a combination of the gasoline engine and the
electric motor, whichever is best for those condi-
tions.
Because the gasoline engine charges the
Lithium-ion (Li-ion) battery as needed, the battery
does not have to be charged from an outside
source like an all-electric vehicle.WARNING
Your vehicle contains a sealed Lithium ion
(Li-ion) high-voltage battery. If the Li-ion
battery is disposed of improperly, there is
a risk of severe burns and electrical shock
that may result in serious injury or death
and there is also a risk of environmental
damage.
CAUTION
Do not misuse of Li-ion battery (to use the
Li-ion battery for completely another
purpose) .
The Li-ion battery is used to drive the electric
motors in the INFINITI Direct Response Hybrid®
System.
The Li-ion battery has a limited service life. Con-
tact your INFINITI retailer for information about
recycling or disposal of the battery.
WARNING
● The INFINITI Direct Response Hybrid®
System uses high voltage up to approxi-
mately 144volts. The system can be hot
while and after starting. Be careful of
both the high voltage and the high tem-
perature. Obey the warning labels at-
tached to the vehicle.
● Never disassemble, remove or replace
high-voltage parts and harnesses as
well as their connectors can cause se-
vere burns or electric shock that may
result in serious injury or death. High-
voltage harnesses are colored orange.
The vehicle high-voltage system has no
user serviceable parts. Take your ve-
hicle to an INFINITI retailer for any nec-
essary maintenance.
● Never try to remove the service plug
located in the trunk. The service plug is
used only when the vehicle is serviced
by trained technicians wearing personal
protection equipment and is part of the
high-voltage system. Touching the ser-
vice plug can cause severe burns or
electric shock that may result in serious
injury or death.
INFINITI DIRECT RESPONSE
HYBRID® SYSTEM LITHIUM-ION (Li-ion) BATTERY HIGH-VOLTAGE CAUTIONS
HEV-2HEV Overview

MEDIUM OR HIGH SPEED DRIVING
The system automatically controls the gasoline
engine and electric motor in order to obtain the
optimum fuel mileage and performance, depend-
ing on the driving situation and available Li-ion
battery charge.
When the remaining battery level is low, the Li-ion
battery is charged by the electric motor that is
driven to generate electric power while the ve-
hicle is driving.
RAPID ACCELERATION
The vehicle is accelerated using both the gaso-
line engine and the electric motor depending on
the available Li-ion battery charge.
DECELERATION AND BRAKING
The Li-ion battery is charged by the electric mo-
tor that changes the energy of the rotating
wheels into electric power. See “Regenerative
brake” later in this section.
STOPPING
The gasoline engine may stop running to save
fuel depending on the available Li-ion battery
charge.The INFINITI Direct Response Hybrid® System
monitors the status of power being sent to the
electric motor and the Li-ion battery state of
charge. The status is shown on the assist charge
gauge in the meter and the energy
flow/remaining Li-ion battery charge in the dot
matrix display. System status can also be shown
on the navigation system display (if so equipped)
when the screen is in the energy flow mode or
energy/fuel history mode.
POWER METER
This meter displays the actual electric motor
power consumption and the charging power to
the Li-ion battery.
For additional information, See “Power meter” in
the “Instruments and controls” section.
ENERGY FLOW (models with
navigation system)
When you use this system, make sure the hybrid
system is in the READY to drive mode. See
“Operation of the hybrid system” in this section.
LIC2544
ENERGY MONITORS
HEV OverviewHEV-5

FUEL ECONOMY (models with
navigation system)
Press the INFO button then select the FUEL
ECONOMY key on the display screen.
This screen displays the rate of fuel consumption
and distance to empty.
FUEL ECONOMY (models without
navigation system)
Press the INFO button then select the FUEL
ECONOMY key on the display screen.
This screen displays the rate of fuel consumption
and distance to empty.
FUEL ECONOMY HISTORY (models
with navigation system)
The Fuel Economy History screen appears in the
display with the navigation system when the
screen is in the Fuel Economy History mode.1. Push the INFO button on the control panel and highlight the “Energy Flow” key on the
display using the INFINITI controller. Then
push the ENTER button.
2. Highlight the “History” key, and push the ENTER button.
NJE0013NJE0012NJE0008
HEV OverviewHEV-7

The Fuel Economy History can be displayed on
the navigation system monitor. This displays the
vehicle’s average fuel consumption and regen-
erative electric power at 2 minute intervals.
The displayed values on the screen indicate gen-
eral driving conditions. Accuracy varies with driv-
ing habits and road conditions.1. Regenerated energy in the past 12 minutes: The regenerated energy in the past 12 min-
utes is indicated with symbols. One symbol
indicates 30 watt-hour. The energy of
30 watt-hour illuminates a 30 watt bulb for
an hour.
2. Fuel consumption in the past 12 minutes: Fuel consumption in the past 12 minutes is
displayed.
3. Current fuel consumption (Latest column): The current fuel consumption is calculated
and displayed based on distance and fuel
consumption.
NOTE:
Information shown in the yellow column
means current (within 2 minutes) and infor-
mation shown in the blue columns means
past (more than 2 minutes) .
FUEL ECONOMY HISTORY (models
without navigation system)
The Fuel Economy History screen appears in the
display with the navigation system when the
screen is in the Fuel Economy History mode. 1. Push the ECON button on the control panel. This will display fuel economy information. 2. The Fuel Eco History can be displayed by
pressing the VIEW key on the display
screen. This displays the vehicle’s average
fuel consumption and regenerative electric
power at 2 minute intervals.
The displayed values on the screen indicate gen-
eral driving conditions. Accuracy varies with driv-
ing habits and road conditions. ● Regenerated energy in the past 12 minutes:
The regenerated energy in the past 12 min-
utes is indicated with symbols. One symbol
indicates 30 watt-hour. The energy of
30 watt-hour illuminates a 30 watt bulb for
an hour.
NJE0012NJE0010
HEV-8HEV Overview

●Fuel consumption in the past 12 minutes:
Fuel consumption in the past 12 minutes is
displayed.
● Current fuel consumption (Latest column):
The current fuel consumption is calculated
and displayed based on distance and fuel
consumption.
NOTE:
Information shown in the yellow column
means current (within 2 minutes) and infor-
mation shown in the blue columns means
past (more than 2 minutes) .This vehicle is equipped with two braking systems.
● Hydraulic brake system
● Regenerative brake system
When the vehicle decelerates while the vehicle is
driven with the shift lever in the D (drive) position
or in the manual shift mode, the Li-ion battery can
be charged by the electric motor. The electric
motor converts the energy of the rotating wheels
into electric power under the following circum-
stances: ● When the accelerator pedal is released
● When the brake pedal is depressed
● When there is no malfunction in the brake
system or the INFINITI Direct Response Hy-
brid® System
The regenerative brake may not work properly if
the vehicle is installed with tires and road wheels
other than the ones specified in this manual.
While the regenerative cooperative brake system
is operating, you might feel slight vibration or hear
the system working when braking. This is normal.
The regenerative cooperative brake system con-
trols both hydraulic and regenerative brakes. If
you feel unusual deceleration when braking, have
an INFINITI retailer check both the brake and
hybrid systems. Drive your vehicle with smooth accelera-
tion and deceleration.
● While driving, energy is recovered through
the regenerative brake as the vehicle decel-
erates. However, for most efficient use, do
not accelerate or decelerate your vehicle
more than necessary.
● Avoid abrupt acceleration and deceleration.
● The power of the Li-ion battery can be
checked on the Energy Flow in the center
display (models with navigation system) or
Li-ion battery status meter in the dot matrix
display. See “Energy Flow (models with
navigation system)” or “Trip computer” in the
“Instruments and controls” section. Gradual
or non-abrupt acceleration and deceleration
will make more effective use of the electric
power.
● When parking, be sure to place the shift
lever in the P (Park) position. While driving,
place the shift lever in the D (Drive) position.
REGENERATIVE BRAKE EFFICIENT USE OF YOUR VEHICLE
HEV OverviewHEV-9