2018 INFINITI Q70-HYBRID brake

Hybrid System Overview
INFINITI Direct Response
Hybrid®System ......................................... Hybrid System-2
Lithium-ion (Li-ion) battery ................... Hybrid System-2
High voltage cautions.............................. Hybrid System-2
Road accident cautions........................... Hybrid System-3
Emergency shut-off system................... Hybrid System-4
Operation of the hybrid system............ Hybrid System-4 Starting and slow speed driving...... Hybrid System-5
Medium or high speed driving ......... Hybrid System-5
Rapid acceleration............................... Hybrid System-5
Deceleration and braking .................. Hybrid System-5
Stopping................................................. Hybrid System-5 Energy monitors ....................................... Hybrid System-5
Assist charge gauge.......................... Hybrid System-6
Energy Flow........................................ Hybrid System-6
Fuel economy history....................... Hybrid System-7
Regenerative brake.................................. Hybrid System-8
Efficient use of your vehicle.................. Hybrid System-8
Approaching Vehicle Sound for
Pedestrians (VSP) system...................... Hybrid System-8
Hybrid vehicle precautions .................... Hybrid System-9 High voltage components............... Hybrid System-9
Hybrid vehicle characteristics ..... Hybrid System-10

or death.WARNING
In case of a collision:
.If your vehicle is drivable, pull your
vehicle off the road, put the trans-
mission in the P (Park) position, apply
the parking brake and turn the
INFINITI Direct Response Hybrid
®
System off.
. Check to see if there are exposed high
voltage parts and cables. Never touch
the parts and cables. For their loca-
tions, see “High voltage components”
(P.Hybrid System-9). To avoid per-
sonal injury, never touch high-vol-
tage wiring, connectors, and other
high-voltage parts, such as electric
motor inverter and Lithium ion (Li-
ion) battery. An electric shock may
occur if exposed electric wires are
visible when viewed from inside or
outside of your vehicle. Therefore,
never touch exposed electric wires.
. If the vehicle receives a strong impact
to the floor while driving, stop the
vehicle in a safe location and check
the floor.
. Inspect the ground under the vehicle.
If liquid has leaked onto the ground,
the fuel system may have been da- maged. Leave the vehicle as soon as
possible.
. Leaks or damage to the Li-ion bat-
tery may result in a fire. If you
discover them, contact emergency
services immediately. Since the fluid
leak may be lithium organic electro-
lyte from the Li-ion battery, never
touch the fluid leak inside or outside
the vehicle. If the fluid contacts your
skin or eyes, wash it off immediately
with a large amount of water and
receive immediate medical attention
to help avoid serious injury.
. If a fire occurs in the hybrid vehicle,
leave the vehicle as soon as possible.
Only use a type ABC, BC or C fire
extinguisher that is meant for use on
electrical fires. Using water or the
incorrect fire extinguisher can result
in serious injury or death from elec-
trical shock.
. If you are not able to safely assess
the vehicle due to vehicle damage, do
not touch the vehicle. Leave the
vehicle and contact emergency ser-
vices. Advise 1st responders that this
is a hybrid vehicle.
. In the event of an accident that
requires body repair and painting, it
is recommended that the vehicle be
Hybrid System OverviewHybrid System-3
ROAD ACCIDENT CAUTIONS

Hybrid System-4Hybrid System Overview
delivered to an INFINITI retailer to
have the Li-ion battery pack and high
voltage parts such as the inverter,
including the wiring harness, re-
moved prior to painting. Li-ion bat-
tery packs exposed to heat in the
paint booth will experience capacity
loss. Damaged Li-ion battery packs
may also pose safety risks to un-
trained mechanics and repair person-
nel.The emergency shut-off system is activated
and the high-voltage system automatically
turns off in the following conditions:
.
Front and side collisions in which the air
bags are deployed.
. Certain rear collisions.
. Certain INFINITI Direct Response Hy-
brid
®System malfunctions
For the above collisions and the certain
hybrid system malfunctions, the READY to
drive indicator light will turn off. See “Warn-
ing lights, indicator lights and audible re-
minders” (P.2-10).
The emergency shut-off activates for the
above collisions to minimize risk of an event
that could cause injury or an accident. If the
emergency shut-off system activates, the
hybrid system may not switched to READY
to drive position, it is recommended that you
contact an INFINITI retailer. Even if the
ignition switch is switched to READY to
drive position, the system may shut-off
suddenly. Therefore, drive cautiously to the
nearest INFINITI retailer or contact an
INFINITI retailer as soon as possible. To start the INFINITI Direct Response
Hybrid
®System:
1. Depress the brake pedal and place the ignition switch in the ON position when
the transmission is in the P (Park) or N
(Neutral) position (P is recommended).
(For more details, see “Push-button
ignition switch” (P.5-9).)
2. The READY to drive indicator light
flashes, then turns illuminated. (The
hybrid system switched to the READY
to drive mode when the indicator light
illuminates.)
When the READY to drive indicator light
illuminates, the vehicle can be driven, even if
the gasoline engine is not running.
NOTE:
The gasoline engine starts and stops auto-
matically. It may stop during low speed
driving, deceleration or when the vehicle is
stopped.
The gasoline engine may automatically run
in the following conditions:
. The level of remaining charge in the
Lithium ion (Li-ion) battery is low. The
engine runs to charge the Li-ion battery
and to provide power to the drive the
vehicle.
. The temperature of the engine coolant is
low.
EMERGENCY SHUT-OFF SYSTEMOPERATION OF THE HYBRID SYSTEM

.Based on driving conditions.
. The shift lever is shifted to the P (Park)
position, the driver’s seat belt is re-
leased and the driver’s side door is then
opened.
The hybrid system operates as follows based
on driving conditions and the Li-ion battery
charge.
STARTING AND SLOW SPEED
DRIVING
The vehicle is driven by the electric motor
depending on the available Li-ion battery
charge.
MEDIUM OR HIGH SPEED DRIV-
ING
The system automatically controls the gaso-
line engine and electric motor in order to
obtain the optimum fuel mileage and per-
formance, depending 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 vehicle is driving.
RAPID ACCELERATION
The vehicle is accelerated using both the
gasoline 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
motor that changes the energy of the
rotating wheels into electric power. See
“Regenerative brake” (P.Hybrid System-8).
STOPPING
The gasoline engine may stop running to
save fuel depending on the available Li-ion
battery charge. The INFINITI Direct Response Hybrid
®Sys-
tem monitors the status of power being sent
to the electric motor and the Lithium ion (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 vehicle information
display. System status can also be shown
when the screen is in the energy flow mode
or energy/fuel history mode.
Hybrid System OverviewHybrid System-5
ENERGY MONITORS

Hybrid System-6Hybrid System Overview
JVO0001X
ASSIST CHARGE GAUGE
This meter displays the actual electric motor
power consumption and the charging power
to the Li-ion battery.
For additional information, See “Assist
charge gauge” (P.2-8).
ENERGY FLOW
When you use this system, make sure the
hybrid system is in the READY to drive mode.
See “Operation of the hybrid system” (P.
Hybrid System-4).If you use the system with the hybrid
system off (ignition switch placed in the
ACC position) for a long time, it will
discharge the 12-volt battery power, and
the hybrid system will not start.
Energy Flow for various operating modes
can be displayed on the center display.
1. Push INFO button on the control panel.
2. Touch [Energy Flow].
JVO0219X
This is an example of the Energy Flow
display. The Energy Flow display changes,
depending on the following operating con-
ditions. The graphic indicates the amount of
power in the Li-ion battery.
The following are displayed on the Energy
Flow screen.
.
When the vehicle is powered only by the
electric motor or gasoline engine.
. When the vehicle is powered by both the
electric motor and the gasoline engine.
. When the vehicle is charging the Li-ion
battery with the regenerative brake and
gasoline engine.
. When the vehicle is powered by the
gasoline engine and is charging the Li-

Hybrid System-8Hybrid System Overview
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 Lithium ion (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 follow-
ing circumstances:
.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
Hybrid
®System
The regenerative brake may not work prop-
erly if the vehicle has tires and road wheels
other than the ones specified in this manual.
Drive your vehicle with smooth acceleration
and deceleration.
. While driving, energy is recovered
through the regenerative brake as the
vehicle decelerates. However, for most
efficient use, do not accelerate or de-
celerate your vehicle more than neces-
sary.
. Avoid abrupt acceleration and decelera-
tion.
. The power of the Lithium ion (Li-ion)
battery can be checked on the Energy
Flow in the center display or Li-ion
battery status meter in the vehicle
information display. See “Energy Flow”
(P.Hybrid System-6) or “Trip computer”
(P.2-28). Gradual or non-abrupt accel-
eration and deceleration will make more
effective use of the electric motor
power, using less gasoline engine 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.The Approaching Vehicle Sound for Pedes-
trians (VSP) system is a function that uses
sound to help alert pedestrians of the
presence of the vehicle when it is being
driven at a low speed in the electric drive
mode under the following conditions:
. The sound starts when the vehicle starts
accelerating.
. The sound stops when the vehicle speed
is more than 19 MPH (30 km/h) while
accelerating.
. The sound starts when the vehicle speed
is less than 16 MPH (25 km/h) while
decelerating.
. The sound stops when the vehicle stops.
. The sound does not stop with the vehicle
in the R (Reverse) position even if the
vehicle stops.
The VSP system is automatically turned on
when the vehicle is in the READY to drive
mode.
If there is a malfunction in the VSP system,
the VSP OFF indicator light in the meter
illuminates. See “Approaching Vehicle Sound
for Pedestrians (VSP) OFF indicator light”
(P.2-18).
REGENERATIVE BRAKEEFFICIENT USE OF YOUR VEHICLEAPPROACHING VEHICLE SOUND
FOR PEDESTRIANS (VSP) SYSTEM

WARNING
.If the sound from the VSP system is
not heard while driving, stop the
vehicle in a safe and quiet location.
Open a window, and then place the
vehicle in the R (Reverse) position
with the brake pedal firmly de-
pressed. Check that the operating
sound can be heard from the front
side of the vehicle.
. If the sound cannot be heard, it is
recommended that you immediately
contact an INFINITI retailer for in-
spection.
HIGH VOLTAGE COMPONENTS
WARNING
.The INFINITI Direct Response Hy-
brid®System uses high voltage up to
approximately 408 volts. The system
can be hot while and after starting.
Be careful of both the high voltage
and the high temperature. Obey the
warning labels attached to the vehi-
cle.
. Never touch, disassemble, remove or
replace the high voltage parts, har-
nesses and their connectors. High
voltage harnesses are orange. Touch-
ing, disassembling, removing or re-
placing those parts and harnesses can
cause severe burns or electric shock
that may result in serious injury or
death.
Hybrid System OverviewHybrid System-9
HYBRID VEHICLE PRECAUTIONS

vehicle for approximately 30 minutes at
least once every two to three months.
Otherwise, the Lithium ion (Li-ion) bat-
tery may be damaged. If the Li-ion
battery is completely discharged and
the hybrid system cannot be activated,
it is recommended that you contact an
INFINITI retailer.
High voltage parts and harnesses on the
hybrid vehicles emit approximately the same
amount of electromagnetic waves as the
conventional gasoline-powered vehicles or
home electronic appliances despite of their
electromagnetic shieldings. Unwanted noise
may occur in the reception of a mobile two-
way radio.
Charging the Li-ion battery while driving is
important. The vehicle cannot run if the Li-
ion battery is discharged. When in the N
(Neutral), D (Drive) or R (Reverse) position,
and while the accelerator pedal or the brake
pedal is not depressed, the Li-ion battery
does not recharge. Leaving the transmission
in the N (Neutral), D (Drive) or R (Reverse)
position, and while the accelerator pedal or
the brake pedal is not depressed for an
extended period of time (for example, when
the shift lever is in the D (Drive) position and
the vehicle is stopped only by the parking
brake), may discharge the Li-ion battery and
the hybrid system may automatically be turned off.
JVO0019X
An air ventis located on the rear parcel
shelf to cool the Li-ion battery. If the vent is
covered, the battery will overheat resulting
in reduced output performance of the hybrid
system. See “Lithium-ion (Li-ion) battery air
vent” (P.7-5).
Hybrid System OverviewHybrid System-11