fuel type INFINITI Q50 HYBRID 2018 Owner's Manual

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-10). 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

JVI1484X
TRIP COMPUTER
Switches for the trip computer are located
on the right side of the steering wheel. To
operate the trip computer, push the
switches.
Each time the
orswitch is pushed,
the display will change.
The display items for trip computer are
changed on the lower display. For details,
see the Infiniti InTouch Owner’s Manual.
JVO0108X
1. Energy monitor
The energy monitor related to the hybrid
system is shown by the graphic.
: Engine
: Li-ion battery
shows the charge level of the Li-ion
battery.
The charge level display will continuously
change as the Li-ion battery charge level
increase or decreases during normal vehicle
operation. Movement of the display from
the far right to the far left of the bar is
normal.
The energy flow is also displayed in the
lower display. (See “Energy Flow” (P.Hybrid System-6).)
2. EV mode odometer and twin trip
odometer (mile or km)
EV mode odometer:
This indicates the total distance traveled
using the electric motor only.
EV mode twin trip odometer:
This indicates the distance traveled in an
individual trip using the electric motor only.
Two types of individual trip can be recorded,
TRIP A and TRIP B.
Pushing the TRIP RESET switch will toggle
between TRIP A and TRIP B.
To reset the display to 0, hold down the
TRIP RESET switch for more than approxi-
mately 1 second.
3. Acceleration guide
This display provides the driver a visual
display of how efficiently the vehicle is being
driven based on accelerator pedal position.
When the drive mode is set to ECO using the
lower display, the acceleration guide oper-
ates with the ECO drive indicator (see “ECO
drive indicator light” (P.2-15)) and ECO
pedal (if so equipped) to help you improve
fuel economy. (See “INFINITI Drive Mode
Selector” (P.5-21) and “ECO pedal system”
(P.5-22).)
Instruments and controls2-27

.Push the power door lock switch to the
UNLOCK position.
To lock, close the fuel-filler door securely
and lock all doors by operating the door
handle request switch, the LOCK button on
the Intelligent Key, the mechanical key or the
power door lock switch.
FUEL-FILLER CAP
WARNING
. Gasoline is extremely flammable and
highly explosive under certain condi-
tions. You could be burned or ser-
iously injured if it is misused or
mishandled. Always stop the
INFINITI Direct Response Hybrid
®
System and do not smoke or allow
open flames or sparks near the ve-
hicle when refueling.
. Do not attempt to top off the fuel
tank after the fuel pump nozzle shuts
off automatically. Continued refuel-
ing may cause fuel overflow, resulting
in fuel spray and possibly a fire.
. Use only an original equipment type
fuel-filler cap as a replacement. It has
a built-in safety valve needed for
proper operation of the fuel system
and emission control system. An in- correct cap can result in a serious
malfunction and possible injury. It
could also cause the Malfunction
Indicator Light (MIL) to come on.
. Never pour fuel into the throttle body
to attempt to start your vehicle.
. Do not fill a portable fuel container in
the vehicle or trailer. Static electricity
can cause an explosion of flammable
liquid, vapor or gas in any vehicle or
trailer. To reduce the risk of serious
injury or death when filling portable
fuel containers:
— Always place the container on the ground when filling.
— Do not use electronic devices when filling.
— Keep the pump nozzle in contact with the container while you are
filling it.
— Use only approved portable fuel containers for flammable liquid.
CAUTION
. If fuel is spilled on the vehicle body,
flush it away with water to avoid
paint damage. .
Failure to tighten the fuel-filler cap
properly may cause the
Malfunc-
tion Indicator Light (MIL) to illumi-
nate. If the
light illuminates
because 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.
. The Loose Fuel Cap warning will
appear if the fuel-filler cap is not
properly tightened. It may take a few
driving trips for the warning to be
displayed. Failure to tighten the fuel-
filler cap properly after the Loose
Fuel Cap warning appears may cause
the
Malfunction Indicator Light
(MIL) to illuminate.
. For additional information, see “Mal-
function Indicator Light (MIL)” (P.2-
16).
Pre-driving checks and adjustments3-25

System maintenance .............................................. 5-120
Break-in schedule .......................................................... 5-121
Fuel Efficient Driving Tips .......................................... 5-121
Increasing fuel economy .............................................. 5-122
Intelligent All-Wheel Drive (AWD) (if
so equipped) .................................................................... 5-123
Parking/parking on hills .............................................. 5-125
Power steering ............................................................... 5-126 Direct Adaptive Steering type .............................. 5-126
Brake system ................................................................. 5-128 Braking precautions ............................................... 5-128
Parking brake break-in ........................................... 5-129
Brake assist ..................................................................... 5-129 Brake assist ............................................................... 5-129
Anti-lock Braking System (ABS) .......................... 5-129
Vehicle Dynamic Control (VDC) system ................ 5-130 Rise-up and build-up .............................................. 5-131
Brake force distribution ......................................... 5-131 Active trace control ...................................................... 5-132
Hill Start Assist system .............................................. 5-134
Chassis control ............................................................. 5-134
Cold weather driving ................................................... 5-135
Freeing a frozen door lock .................................. 5-135
Antifreeze ................................................................. 5-135
12-volt Battery ....................................................... 5-135
Draining of coolant water ................................... 5-135
Tire equipment ........................................................ 5-135
Special winter equipment .................................... 5-135
Driving on snow or ice .......................................... 5-135
Engine block heater (if so equipped) ............... 5-136
Active noise cancellation/Active
sound enhancement ..................................................... 5-137
Active noise cancellation ..................................... 5-137
Active sound enhancement ................................. 5-137

The following descriptions are provided to
give you a better understanding of the
scheduled maintenance items that should
be regularly checked or replaced. The main-
tenance schedule indicates at which mile-
age/time intervals each item requires
service.
In addition to scheduled maintenance, your
vehicle requires that some items be checked
during normal day-to-day operation. Refer
to “General maintenance” (P.9-2).
Items marked with “*” are recommended by
INFINITI for reliable vehicle operation. You
are not required to perform maintenance on
these items in order to maintain the warran-
ties which come with your vehicle. Other
maintenance items and intervals are re-
quired.
When applicable, additional information can
be found in the “8. Do-it-yourself” section of
this manual.
NOTE:
INFINITI does not advocate the use of non-
OEM approved aftermarket flushing sys-
tems and strongly advises against perform-
ing these services on an INFINITI product.
Many of the aftermarket flushing systems
use non-OEM approved chemicals or sol-
vents, the use of which has not been
validated by INFINITI.For recommended fuel, lubricants, fluids,
grease, and refrigerant, refer to “Capacities
and recommended fluids/lubricants” (P.10-
2) of this manual.
EMISSION CONTROL SYSTEM
MAINTENANCE
Engine air filter:
Replace at specified intervals. When driving
for prolonged periods in dusty conditions,
check/replace the filter more frequently.
Engine coolant*:
Replace coolant at the specified interval.
When adding or replacing coolant, be sure to
use only Genuine NISSAN Long Life Anti-
freeze/Coolant (blue) or equivalent with the
proper mixture. (Refer to “Engine cooling
system” (P.8-5) to determine the proper
mixture for your area.)
NOTE:
Mixing any other type of coolant or the use
of non-distilled water may reduce the
recommended service interval of the cool-
ant.
Hybrid Electronic Vehicle (HEV) inverter
coolant:
Replace inverter coolant at the specified
interval. When adding or replacing coolant,
be sure to use only Genuine NISSAN Long
Life Antifreeze/Coolant (blue) or equivalentwith the proper mixture. (Refer to “Inverter
cooling system” (P.8-7) to determine the
proper mixture for your area.)
NOTE:
Mixing any other type of coolant or the use
of non-distilled water may reduce the
recommended service interval of the cool-
ant.
Engine oil and oil filter:
Replace engine oil and oil filter at the
specified intervals. For recommended oil
grade and viscosity refer to “Capacities and
recommended fluids/lubricants” (P.10-2).
Engine valve clearance*:
Inspect only if valve noise increases. Adjust
valve clearance if necessary.
Evaporative emissions control vapor lines*:
Check vapor lines for leaks or looseness.
Tighten connections or replace parts as
necessary.
Fuel lines*:
Check the fuel hoses, piping and connections
for leaks, looseness, or deterioration. Tight-
en connections or replace parts as necessary.
Spark plugs:
Replace at specified intervals. Install new
plugs of the type as originally equipped.
Maintenance and schedules9-5
EXPLANATION OF SCHEDULED
MAINTENANCE ITEMS

MAINTENANCE OP-
ERATION
Perform at number of
miles, kilometers or
months, whichever
comes first.Miles × 1,000
(km × 1,000) Months MAINTENANCE INTERVAL
65
(104) 78 70
(112) 84 75
(120) 90 80
(128) 96 85
(136) 102 90
(144) 108 95
(152) 114 100
(160) 120 105
(168) 126 110
(176) 132 115
(184) 138 120
(192) 144
Air cleaner filter See NOTE (1) RR
EVAP vapor lines I*I* I*
Fuel lines I*I* I*
Fuel filter See NOTE (2)
Engine coolant* See NOTE (3) (4)
HEV inverter coolant See NOTE (4) (5)
Engine oil R R R R R R R R R R R R
Engine oil filter R R R R R R R R R R R R
Spark plugs See NOTE (6) Replace every 105,000 miles (168,000 km)
Intake and exhaust valve
clearance* See NOTE (7)
NOTE:
(1) If operating mainly in dusty conditions,
more frequent maintenance may be re-
quired.
(2) Periodic maintenance is not required.
(3) First replacement interval is 105,000
miles (168,000 km) or 84 months. After
first replacement, replace every 75,000
miles (120,000 km) or 60 months.
(4) Use only Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent
with proper mixture ratio of 50% anti-
freeze and 50% demineralized or distilled
water. Mixing any other type of coolant or
the use of non-distilled water may reduce
the life expectancy of the factory fill cool-
ant.
(5) First replacement interval is 12,5000
miles (200,000 km) or 180 months. After
first replacement, replace every 75,000
miles (120,000 km) or 60 months.
(6) Replace spark plug when the plug gap
exceeds 0.055 in (1.4 mm) even if within
specified replacement mileage.
(7) Periodic maintenance is not required.
However, if valve noise increases, inspect
valve clearance.
*: Maintenance items and intervals with “*”
are recommended by INFINITI for reliable
vehicle operation. The owner need not to
perform such maintenance in order to
maintain the emission warranty or manu-
Maintenance and schedules9-9

10-2Technical and consumer information
The following are approximate capacities. The actual refill capacities may be a little different. When refilling, follow the procedure
instructed in the “8. Do-it-yourself” section to determine the proper refill capacity.
Fluid typeCapacity (approximate)
Recommended Fluids/Lubricants
Metric
Measure US
Measure Imperial
Measure
Fuel 67.4 L 17-7/8 gal 14-7/8 galÂSee “Fuel information” (P.10-4).
Engine oil
*1Drain and refill*1: For additional information, see “Changing engine oil and oil filter”
(P.8-10). With oil filter change 4.9 L 5-1/8 qt 4-3/8 qt
ÂGenuine “Nissan Motor Oil Ester 5W-30 SN” is
recommended.
 If the above motor oil is not available, use an
equivalent motor oil that matches the above grade
and viscosity. For additional information, see “En-
gine oil and oil filter recommendation” (P.10-6).
Without oil filter
change
4.6 L 4-7/8 qt 4 qt
Engine coolant With reservoir Pressurized radiator reservoir tank 10.8 L 11-3/8 qt 9-1/2 qtÂPre-diluted Genuine NISSAN Long Life Antifreeze/
Coolant (blue) or equivalent
Non-pressurized ra-
diator reservoir tank 2WD model
9.8 L 10-3/8 qt 8-5/8 qt
AWD model 10.3 L 10-7/8 qt 9-1/8 qt
Reservoir Pressurized radiator reservoir tank 0.9 L1 qt 3/4 qt
Non-pressurized radiator reservoir tank 0.8 L 7/8 qt 3/4 qt
Inverter coolant With reservoir 2.4 L 2-1/2 qt 2-1/8 qt
Reservoir 0.4 L 3/8 qt 3/8 qt
Automatic transmission fluid
———Â
Genuine NISSAN Matic S ATF
 INFINITI recommends using Genuine NISSAN Ma-
tic S ATF ONLY in INFINITI automatic transmis-
sions. Do not mix with other fluids. Using fluids that
are not equivalent to Genuine NISSAN Matic S ATF
may damage the automatic transmission. Damage
caused by the use of fluids other than as recom-
mended is not covered under the INFINITI’s new
vehicle limited warranty.
Differential gear oil Front
———Â
Genuine NISSAN Differential Oil Hypoid Super GL-
5 80W-90 or equivalent conventional (non-syn-
thetic) oil.
Rear ———Â
Genuine NISSAN Differential Oil Hypoid Super-S
GL-5 synthetic 75W-90 or equivalent
Transfer fluid ———ÂGenuine NISSAN Matic J ATF
 INFINITI recommends using Genuine NISSAN Ma-
tic J ATF ONLY in INFINITI transfers. Do not mix
with other fluids. Using fluids that are not equiva-
lent to Genuine NISSAN Matic J ATF may damage
the transfer. Damage caused by the use of fluids
other than as recommended is not covered under
the INFINITI’s new vehicle limited warranty.
CAPACITIES AND RECOMMENDED
FLUIDS/LUBRICANTS

10-6Technical and consumer information
damage to the engine. If any of the above
symptoms are encountered, have your ve-
hicle checked. It is recommended you visit an
INFINITI retailer for servicing.
However, now and then you may notice
light spark knock for a short time while
accelerating or driving up hills. This is no
cause for concern, because you get the
greatest fuel benefit when there is light
spark knock for a short time under heavy
engine load.
JVT0159X
API certification mark
API service symbol
ENGINE OIL AND OIL FILTER
RECOMMENDATION
Selecting the correct oil
It is essential to choose the correct grade,
quality, and viscosity engine oil to ensure
satisfactory engine life and performance,
see “Capacities and recommended fluids/
lubricants” (P.10-2). INFINITI recommends
the use of an energy conserving oil in order
to improve fuel economy.
Select only engine oils that meet the Amer-
ican Petroleum Institute (API) certificationor International Lubricant Standardization
and Approval Committee (ILSAC) certifica-
tion and SAE viscosity standard. These oils
have the API certification mark on the front
of the container. Oils which do not have the
specified quality label should not be used as
they could cause engine damage.Oil additives
INFINITI does not recommend the use of oil
additives. The use of an oil additive is not
necessary when the proper oil type is used
and maintenance intervals are followed.
Oil which may contain foreign matter or has
been previously used should not be used.