2018 INFINITI Q50-HYBRID engine

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).

0 Illustrated table of contents
Seats, seat belts and Supplemental Restraint
System (SRS) ...................................................................... 0-2
Exterior front ...................................................................... 0-3
Exterior rear ........................................................................\
0-4
Passenger compartment ................................................. 0-5
Cockpit ........................................................................\
......... 0-6Instrument panel ............................................................... 0-7
Meters and gauges .......................................................... 0-8
Engine compartment ....................................................... 0-9
VQ35HR engine ......................................................... 0-9
Warning and indicator lights ...................................... 0-10

JVC1103X
1. Hood (P.3-21)
2. Windshield wiper and washer— Operation (P.2-34)
— Maintenance (P.8-17)
3. Headlight
— Operation (P.2-36) — Maintenance (P.8-25)
— Adaptive Front lighting System
(AFS) (if so equipped) (P.2-41)
4. Moonroof (P.2-54)
5. Power windows (P.2-52)
6. Outside mirrors (P.3-29) — Side turn signal lights (P.2-42)
— Side view camera*
7. Sonar system*
8. Front view camera*
9. Turn signal (P.2-42, P.8-25)
10. Fog light (P.2-43, P.8-25)
11. Tires — Wheels and tires (P.8-28, P.10-9)
— Flat tire (P.6-3)
— Tire Pressure Monitoring System
(TPMS) (P.2-12, P.5-5)
12. Doors — Keys (P.3-2)
— Door locks (P.3-4)
— Intelligent Key system (P.3-6)
— Remote keyless entry system
(P.3-15)
— Courtesy light (P.2-59)
— Remote engine start (P.3-19)
*: Refer to the Infiniti InTouch Owner’s Manual.
Illustrated table of contents0-3
EXTERIOR FRONT

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

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

ler. (See “Brake fluid” (P.8-12).)
2. If the brake fluid level is correct, have the warning system checked. It is recom-
mended you have this service performed
by an INFINITI retailer.
Brake system malfunction warning:
If the brake warning light (red) and the
following warning light illuminate at the
same time when the parking brake is re-
leased and the brake fluid level is sufficient,
there may be a malfunction in the brake
system.
. Brake system warning light (yellow)
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.
A chime sounds if a malfunction occurs in the brake system power supply.
.
Anti-lock Braking System (ABS) warning
light
— Avoid driving at high speed and sud-
den braking, and see an INFINITI
retailer as soon as possible for an
inspection.
WARNING
.Your brake system may not be work-
ing properly if the brake warning
light (red) is on. Driving could be
dangerous. If you judge it to be safe,
drive carefully to the nearest service
station for repairs. Otherwise, have
your vehicle towed because driving it
could be dangerous.
. Pressing the brake pedal with the
hybrid system stopped and/or low
brake fluid level may increase your
stopping distance and braking will
require greater pedal effort as well as
pedal travel.
. If the brake fluid level is below the
minimum or MIN mark on the brake
fluid reservoir, do not drive until the
brake system has been checked. It is
recommended you visit an INFINITI
retailer for this service.
Direct Response Hybrid®Sys-
tem warning light
When the ignition switch is in the ON
position, the Direct Response Hybrid®Sys-
tem (hybrid system) warning light illumi-
nates. After starting the hybrid system, the
hybrid system warning light turns off.
If the hybrid system warning light illuminates
while driving, it may indicate that there is a
malfunction in the electric motor and/or
other hybrid system components.
Stop your vehicle immediately and it is
recommended that you contact your
INFINITI retailer.
If the hybrid system warning light blinks
while driving, it may indicate that the Li-ion
battery charge is low and you cannot
continue to drive.
Do not allow the vehicle to coast when the
Li-ion battery is low or when the hybrid
system warning light blinks while driving.
The engine will not automatically start to
charge the Li-ion battery while the vehicle is
coasting.
Forward Emergency Braking
(FEB) system warning light
This light comes on when the ignition switch
is placed in the ON position. It turns off after
Instruments and controls2-11

2-16Instruments and controls
Exterior light indicator
This indicator illuminates when the headlight
switch is turned to the AUTO,orposition and the front parking lights, instru-
ment panel lights, rear combination lights,
license plate lights or headlights are on. The
indicator turns off when these lights are
turned off.
Front fog light indicator light
The front fog light indicator light illuminates
when the front fog lights are on. (See “Fog
light switch” (P.2-43).)
Front passenger air bag status
light
The front passenger air bag status light
() located on the instrument panel will be
lit and the passenger front air bag will be
OFF depending on how the front passenger
seat is being used.
For front passenger air bag status light
operation, see “INFINITI Advanced Air Bag
System (front seats)” (P.1-43).
High beam assist indicator
light (if so equipped)
The indicator light illuminates when the headlights come on while the headlight
switch is in the AUTO position with the high
beam selected. This indicates that the high
beam assist system is operational. (See
“High beam assist” (P.2-38).)
High beam indicator light
This light comes on when the headlight high
beam is on and goes out when the low beam
is selected.
Malfunction Indicator Light
(MIL)
If the Malfunction Indicator Light (MIL)
comes on steady or blinks while the engine
is running, it may indicate a potential emis-
sion control malfunction.
The malfunction indicator light may also
come on steady if the fuel-filler cap is loose
or missing, or if the vehicle runs out of fuel.
Check to make sure the fuel-filler cap is
installed and closed tightly, and that the
vehicle has at least 3 US gallons (11.4 liters)
of fuel in the fuel tank.
After a few driving trips, the
light should
turn off if no other potential emission
control system malfunction exists.
If this indicator light remains on for 20
seconds and then blinks for 10 seconds
when the engine is not running, it indicates that the vehicle is not ready for an emission
control system inspection/maintenance test.
(See “Readiness for Inspection/Mainte-
nance (I/M) test (US only)” (P.10-21).)
Operation:
The malfunction indicator light will come on
in one of two ways:
.
Malfunction indicator light on steady —
An emission control system malfunction
has been detected. Check the fuel-filler
cap if the Loose Fuel Cap warning
appears in the vehicle information dis-
play. If the fuel-filler cap is loose or
missing, tighten or install the cap and
continue to drive the vehicle. The
light should turn off after a few driving
trips. If thelight does not turn off
after a few driving trips, have the vehicle
inspected. It is recommended you visit an
INFINITI retailer for this service. You do
not need to have your vehicle towed to
the retailer.
. Malfunction indicator light blinking — An
engine misfire has been detected which
may damage the emission control sys-
tem.
To reduce or avoid emission control
system damage:
1) Do not drive at speeds above 45 MPH (72 km/h).