2018 INFINITI Q50-HYBRID battery

HYBRID VEHICLE CHARACTER-
ISTICS
WARNING
.When you leave your vehicle, be sure
to place the ignition switch in the
OFF position.
. Be sure to put the transmission in the
P (Park) position because the vehicle
can move when the READY to drive
indicator light is on even if the gaso-
line engine is not running. When the
READY to drive indicator light is on,
do not leave your vehicle in a shift
position other than the P (Park)
position. The vehicle will creep and
start abruptly if the accelerator pedal
is depressed by mistake. This may
cause serious injury or death.
CAUTION
If the vehicle is parked for a long period
of time, the battery discharges gradu-
ally. To avoid this occurrence, drive the
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.
JVO0114X
An air ventis located on the right and left
sides between the rear seat and rear door to
cool the Li-ion battery and DC/DC conver-
ter. If the vent is covered, the Li-ion battery
or DC/DC converter will overheat resulting
in reduced output performance of the hybrid
system. See “Lithium-ion (Li-ion) battery
and DC/DC converter air vent” (P.7-5).
Hybrid System OverviewHybrid System-11

Hybrid System-12Hybrid System Overview
JVO0101X
CAUTION
.Do not allow any liquid to get on or in
the air vent. It may cause a short
circuit and damage the Li-ion battery
or DC/DC converter.
. Do not place objects over or into the
air vent. The Li-ion battery or DC/
DC converter may overheat and be
damaged.
JVO0006X
CAUTION
Do not load large amounts of water in
open containers (aquariums or buckets)
into the vehicle. If the water spills onto
the Li-ion battery, it may cause a short
circuit and damage the battery.
Noise and vibration
After the hybrid system is activated, the
following noises and vibrations that are
unique to the hybrid system may occur. This
does not indicate a malfunction. .
Electric motor noise from the engine
compartment
. Noise from the rear of the vehicle when
the hybrid system activates or deacti-
vates
. Noise and vibration when the gasoline
engine starts running or stops
. Operating noise or electric motor noise
when releasing the accelerator pedal or
depressing the brake pedal
. Engine noise due to rapid acceleration
. Fan noise from the air inlet located
between the rear seat and rear door
. Noise from the climate control system
. Noise from the vehicle in order to alert
pedestrians to the presence of an ap-
proaching vehicle. See “Approaching Ve-
hicle Sound for Pedestrians (VSP)
system” (P.Hybrid System-9).

JVM0294X
VQ35HR ENGINE
1. Engine oil filler cap (P.8-9)
2. Brake fluid reservoir (P.8-12)
3. Fuse/fusible link holder (P.8-19)
4. Air cleaner (P.8-16)
5. Inverter coolant reservoir (P.8-7)
6. Radiator filler cap (P.8-5)
7. Engine coolant reservoir (P.8-5)
8. Engine oil dipstick (P.8-9)
9. Window washer fluid reservoir (P.8-13)The 12-volt battery is located inside the
trunk.
Illustrated table of contents0-9
ENGINE COMPARTMENT

0-10Illustrated table of contents
Warninglight Name
Page
12-volt battery charge
warning light 2-9
Anti-lock Braking System
(ABS) warning light2-10
Brake system warning light
(yellow)
2-10
Brake warning light (red) 2-10
Direct Response Hybrid®
System warning light 2-11
Forward Emergency Braking
(FEB) system warning light2-11
Low fuel warning light 2-12
Low tire pressure warning
light
2-12
Master warning light 2-13
Power steering warning light 2-14
Seat belt warning light 2-14
Supplemental air bag warn-
ing light2-14
Vehicle Dynamic Control
(VDC) warning light 2-15Indicator
light Name
Page
Approaching Vehicle Sound
for Pedestrians (VSP) OFF
indicator light 2-15
ECO drive indicator light 2-15
EV indicator light
2-15
Exterior light indicator 2-16
Front fog light indicator light 2-16
Front passenger air bag sta-
tus light2-16
High beam assist indicator
light (if so equipped)
2-16
High beam indicator light 2-16
Malfunction Indicator Light
(MIL)2-16
READY to drive indicator
light 2-17
Security indicator light 2-17
Turn signal/hazard indicator
lights2-17
Vehicle Dynamic Control
(VDC) off indicator light
2-17
WARNING AND INDICATOR LIGHTS

FRONT SEATS
Front power seat adjustment
Operating tips:
.The power seat motor has an auto-reset
overload protection circuit. If the motor
stops during operation, wait 30 seconds,
then reactivate the switch.
. Do not operate the power seat switch for
a long period of time when the INFINITI
Direct Response Hybrid
®System is not
running. This will discharge the 12-volt
battery.
See “Automatic drive positioner” (P.3-30)
for the seat position memory function.
SSS1051
Forward and backward:
Moving the switch
forward or backward
will slide the seat forward or backward to
the desired position.
Reclining:
Move the recline switch
backward until
the desired angle is obtained. To bring the
seatback forward again, move the switch
forward.
The reclining feature allows adjustment of
the seatback for occupants of different sizes
for added comfort and to help obtain proper
seat belt fit. (See “Precautions on seat belt
usage” (P.1-9).) Also, the seatback can be
reclined to allow occupants to rest when the vehicle is parked.
Safety — Seats, seat belts and supplemental restraint system1-3

JVI0733X
TACHOMETER
The tachometer indicates engine speed in
revolutions per minute (RPM).Do not rev
the engine into the red zone
.
The scale length and the red zone vary with
the engine model.
CAUTION
When engine speed approaches the red
zone, shift to a higher gear or reduce
engine speed. Operating the engine in
the red zone may cause serious engine
damage.
JVI0683X
ASSIST CHARGE GAUGE
The gauge indicates the condition of the
electric motor.
When the needle is between the center and
“charge”
side, this indicates that the
electric motor is generating power to re-
charge the Li-ion battery.
When the needle is between the center and
the PWR
side, this indicates that the
electric motor is powering the drive wheels
and the Li-ion battery is discharging.
JVI0640X
FUEL GAUGE
The gauge indicates the approximatefuel
level in the tank.
The gauge may move slightly during braking,
turning, acceleration, or going up or down
hills.
The gauge needle returns to “0” (Empty)
after the ignition switch is pushed to the
OFF position.
Refill the fuel tank before the gauge
registers “0” (Empty).
The low fuel warning light
illuminates on
the meter when the fuel level is getting low.
Refuel as soon as it is convenient, preferably
before the gauge reaches “0”. There will be a
Instruments and controls2-7

12-volt battery charge warning lightMaster warning lightFront fog light indicator light
Anti-lock Braking System (ABS) warning
lightPower steering warning lightFront passenger air bag status light
Seat belt warning light and chimeHigh beam assist indicator light (if so
equipped)
Brake system warning light (yellow)Supplemental air bag warning lightHigh beam indicator light
Brake warning light (red)Vehicle Dynamic Control (VDC) warning
lightMalfunction Indicator Light (MIL)
Direct Response Hybrid®System warn-
ing lightApproaching Vehicle Sound for Pedes-
trians (VSP) OFF indicator lightREADY to drive indicator light
Forward Emergency Braking (FEB) sys-
tem warning lightECO drive indicator lightSecurity indicator light
Low fuel warning lightEV indicator lightTurn signal/hazard indicator lights
Low tire pressure warning lightExterior light indicatorVehicle Dynamic Control (VDC) off in-
dicator light
CHECKING LIGHTS
With all doors closed, apply the parking
brake, fasten the seat belts and place the
ignition switch in the ON position without
starting the INFINITI Direct Response Hy-
brid
®System. The following lights (if so
equipped) will come on:
,or(red),,,,
The following lights (if so equipped) come on
briefly and then go off:
,or,,,,,(yellow) If any light does not come on or operates in a
way other than described, it may indicate a
burned-out bulb and/or a system malfunc-
tion. It is recommended you have the system
checked by an INFINITI retailer.
Some indicators and warnings are also
displayed in the vehicle information display
between the speedometer and tachometer.
(See “Vehicle information display” (P.2-18).)
WARNING LIGHTS
12-volt battery charge warn-
ing light
When the ignition switch is in the ON
position, the 12-volt battery charge warning
light illuminates. After starting the hybrid
system, the light turns off.
If the light continues to illuminate after
starting the hybrid system, it may indicate
the charging system is not functioning
Instruments and controls2-9
WARNING LIGHTS, INDICATOR
LIGHTS AND AUDIBLE REMINDERS

2-10Instruments and controls
properly. It is recommended you visit an
INFINITI retailer immediately.
CAUTION
The charging system may not be func-
tioning properly if the 12-volt battery
charge warning light comes on while the
hybrid system is running. The hybrid
system will stop operating when the
12-volt battery becomes discharged.
Immediately stop the vehicle in a safe
place and it is recommended you contact
an INFINITI retailer.
orAnti-lock Braking
System (ABS) warning light
When the ignition switch is in the ON
position, the Anti-lock Braking System
(ABS) warning light illuminates and then
turns off. This indicates the ABS is opera-
tional.
If the ABS warning light illuminates while the
hybrid system is running, or while driving, it
may indicate the ABS is not functioning
properly. Have the system checked. It is
recommended you visit an INFINITI retailer
for this service. If an ABS malfunction occurs, the anti-lock
function is turned off. The brake system then
operates normally, but without anti-lock
assistance. (See “Anti-lock Braking System
(ABS)” (P.5-129).)
Brake system warning light
(yellow)
This light will illuminate after the hybrid
system is started and then turns off after a
few seconds.
WARNING
If both the brake system warning light
(yellow) and the brake warning light
(red) illuminate when the parking brake
is released and the hybrid system is on,
do not drive the vehicle. More brake
pedal effort than normal will be required
and there will be a significant reduction
in brake performance, which could result
in an accident. Immediately stop the
vehicle in a safe location and it is
recommended you contact an INFINITI
retailer.
If the brake system warning light (yellow)
illuminates when the ignition switch is in the
ON position, it may indicate a malfunction in the brake system or one of the following
other functions.
.
Regenerative brake system
. Hill start assist system
. Rise-up and build-up function
It is recommended you see an INFINITI
retailer for an inspection as soon as possible.
A chime sounds if a malfunction occurs in the
brake system power supply.
orBrake warning light
(red)
This light functions for both the parking
brake and the foot brake systems.
Parking brake indicator:
When the ignition switch is in the ON
position, the light comes on when the
parking brake is applied.
Low brake fluid warning:
When the ignition switch is in the ON
position, the light warns of a low brake fluid
level. If the light comes on with the parking
brake not applied, stop the vehicle and
perform the following:
1. Check the brake fluid level. If brake fluid is low, add fluid and have the system
checked. It is recommended you have this
service performed by an INFINITI retai-