cooling INFINITI Q50 HYBRID 2018 User Guide

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

11-2
Precautions on child restraints .................. 1-18
Child safety ............................................................ 1-16
Child safety rear door lock .................................. 3-6
Chimes Audible reminders .......................................... 2-17
Seat belt warning light and chime ............ 2-14
Circuit breaker
Fusible link ...................................................... 8-20
Cleaning exterior and interior .................... 7-2, 7-5
Clock ........................................................................\
2-30
Coat hooks ............................................................ 2-51
Cockpit ...................................................................... 2-3
Cold weather driving ........................................ 5-135
Console box ........................................................... 2-50
Coolant Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine coolant ............................... 8-7
Checking engine coolant level ...................... 8-6
Corrosion protection ............................................. 7-8
Courtesy light ....................................................... 2-59
Cruise control ....................................................... 5-70 Fixed speed cruise control (on
ICC system) ..................................................... 5-89
Intelligent Cruise Control (ICC) ................. 5-72
Cruise indicator .................................................... 2-23
Cup holders ........................................................... 2-47
Current fuel consumption ................................. 2-28D
Daytime running light system .......................... 2-40
Defroster switch Rear window and outside mirror
defroster switch ............................................. 2-36
Dimensions ............................................................ 10-9
Direct Adaptive Steering ................................. 5-126
Direct Response Hybrid
®System warning
light (hybrid system warning light) .................. 2-11
Distance Control Assist (DCA) ........................ 5-93
Distance to empty ............................................... 2-29
Drive positioner .................................................... 3-30
Driver assist system indicator .......................... 2-24
Driving Cold weather driving .................................. 5-135
Driving with automatic transmission ....... 5-15
Precautions when starting and driving ..... 5-4
Driving aids ............................................................ 2-29
E
ECO drive indicator light ................................... 2-15
ECO mode ............................................................. 5-21
ECO pedal system ............................................... 5-22
Economy Fuel .................................................................. 5-122
Efficient use of your vehicle ...... Hybrid System-8
Elapsed time ......................................................... 2-29
Elapsed time and trip odometer ..................... 2-29
Emergency shut-off system ...... Hybrid System-4
Emission control information label ............... 10-11 Emission control system maintenance ............ 9-8
Emission control system warranty ............... 10-19
Energy flow .................................... Hybrid System-6
Energy monitor .................................................... 2-27
Energy monitors ........................... Hybrid System-5
engine
Break-in schedule ........................................ 5-121
Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine coolant ............................... 8-7
Changing engine oil and oil filter ............. 8-10
Checking engine coolant level ...................... 8-6
Checking engine oil level ............................... 8-9
Emergency hybrid system shut off .......... 5-13
Engine block heater ................................... 5-136
Engine compartment check locations ........ 8-3
Engine cooling system ................................... 8-5
Engine oil ........................................................... 8-9
Engine oil and filter
replacement indicator ................................... 2-25
Engine oil and oil
filter recommendation .................................. 10-6
Engine oil viscosity ........................................ 10-7
Engine serial number .................................. 10-11
Engine specifications ................................... 10-8
If your vehicle overheats ............................... 6-8
Remote engine start indicator ................... 2-21
Engine coolant temperature gauge ................ 2-29
Entry/exit function Automatic drive positioner ........................ 3-30

11-4
I
If the vehicle does not start ................................ 6-5
Ignition switch(Push-button) ................................................. 5-11
Automatic transmission models ................ 5-15
Immobilizer system .............................................. 2-32
Indicator Vehicle information display ........................ 2-18
Indicator lights ...................................................... 2-15
INFINITI Direct Response
Hybrid
®System ............................. Hybrid System-2
Before starting the INFINITI Direct
Response Hybrid
®System .......................... 5-14
Starting the INFINITI Direct Response
Hybrid
®System .............................................. 5-14
INFINITI Drive Mode Selector ......................... 5-21
Infiniti InTouch Owner’s Manual ...................... 4-2
INFINITI Vehicle Immobilizer System ............ 2-32 Engine start ..................................................... 2-32
Inside mirror .......................................................... 3-28
Inspection/maintenance (I/M) test .............. 10-21
Instrument brightness control ......................... 2-42
Instrument panel .................................................... 2-4
Intelligent All-Wheel Drive (AWD) ............... 5-123
Intelligent Cruise Control (ICC) ....................... 5-72
Intelligent Cruise Control (ICC) system
ON indicator ......................................................... 2-24
Intelligent Key .......................................................... 3-2
Intelligent Key system ........................................... 3-6 Battery replacement ..................................... 8-21 Key operating range ....................................... 3-8
Key operation ................................................... 3-9
Warning signals .............................................. 3-13
Interior light control switch .............................. 2-57
Interior light replacement .................................. 8-25
Interior lights ......................................................... 2-56
Interior trunk lid release .................................... 3-24
Inverter cooling system ......................................... 8-7
ISOFIX child restraint ......................................... 1-20
J
Jump starting ........................................................... 6-5
K
Keyless entry (See remote keyless
entry system) ........................................................ 3-15
Keys ........................................................................\
.... 3-2
For Intelligent Key system ............................ 3-6
L
LabelsAir bag warning labels ................................. 1-54
Air conditioner specification label ......... 10-12
Emission control information label ......... 10-11
Engine serial number .................................. 10-11
F.M.V.S.S./C.M.V.S.S.
certification label ......................................... 10-11
Tire and Loading
information label ............................. 8-30, 10-12 Vehicle identification number (VIN) ...... 10-10
Lane Departure Warning (LDW)/Lane
Departure Prevention (LDP) ............................ 5-32
LATCH system ..................................................... 1-20
License plate Installing front license plate .................... 10-13
Light
Air bag warning light .................................... 1-54
Bulb replacement .......................................... 8-24
Fog light switch ............................................. 2-43
Headlight switch ............................................ 2-36
Indicator lights ................................................ 2-15
Interior light control switch ........................ 2-57
Interior lights ................................................... 2-56
Map lights ........................................................ 2-56
Personal lights ................................................ 2-57
Replacement .................................................. 8-24
Trunk light ....................................................... 2-58
Vanity mirror lights ....................................... 2-58
Warning/indicator lights and
audible reminders ............................................ 2-9
Lights
Exterior and interior light replacement .... 8-25
Lithium-ion (Li-ion) battery ....... Hybrid System-2
Loading information (See vehicle
loading information) ......................................... 10-15
Lock
Automatic door locks ..................................... 3-5
Door locks .......................................................... 3-4
Power door lock ............................................... 3-4
Trunk lid ........................................................... 3-22