cooling INFINITI Q50 2020 User Guide

until it reaches normal operating tempera-
ture. Add coolant up to the MAX level.
Tighten the cap securely after adding engine
coolant.
If the cooling system requires coolant fre-
quently, have it checked. It is recommended
you visit an INFINITI retailer for this
service.
CHANGING ENGINE COOLANT
It is recommended that major cooling system
repairs be performed by an INFINITI retailer.
The service procedures can be found in the
appropriate INFINITI Service Manual.
Improper servicing can result in reduced
heater performance and engine overheat-
ing.
WARNING
. To avoid the danger of being scalded,
never change the coolant when the
engine is hot.
. Never remove the radiator cap when
the engine is hot. Serious burns could
be caused by high pressure fluid
escaping from the radiator.
. Avoid direct skin contact with used
coolant. If skin contact is made, wash
thoroughly with soap or hand cleaner as soon as possible.
. Keep coolant out of reach of children
and pets.
Engine coolant must be disposed of prop-
erly. Check your local regulations. The intercooler cooling system is filled at the
factory with a pre-diluted mixture of 50%
Genuine NISSAN Long Life Antifreeze/
Coolant (blue) and 50% water to provide
year-round anti-freeze and coolant protec-
tion. The antifreeze solution contains rust
and corrosion inhibitors. Additional inter-
cooler cooling system additives are not
necessary.
WARNING
.
Never remove the coolant reservoir
cap when the engine is hot. Wait until
the engine cools down. Serious burns
could be caused by high pressure fluid
escaping from the coolant reservoir.
. The intercooler reservoir is equipped
with a pressure type cap. To prevent
engine and intercooler damage, use
only a genuine NISSAN intercooler
reservoir cap.
CAUTION
.Never use any additives in the cool-
ant such as radiator sealer in the
cooling system. This may cause da-
mage to the intercooler.
Do-it-yourself8-5
INTERCOOLER COOLING SYSTEM

8-6Do-it-yourself
.When adding or replacing coolant, be
sure to use only Genuine NISSAN
Long Life Antifreeze/Coolant (blue)
or equivalent. Genuine NISSAN Long
Life Antifreeze/Coolant (blue) is pre-
diluted to provide antifreeze protec-
tion to −34°F(−37°C). If additional
freeze protection is needed due to
weather where you operate your
vehicle, add Genuine NISSAN Long
Life Antifreeze/Coolant (blue) con-
centrate following the directions on
the container. If an equivalent cool-
ant other than Genuine NISSAN Long
Life Antifreeze/Coolant (blue) is
used, follow the coolant manufac-
ture’s instructions to maintain mini-
mum antifreeze protection to −34°F
(−37°C). The use of other types of
coolant solutions other than Genuine
NISSAN Long Life Antifreeze/Cool-
ant (blue) or equivalent may damage
the Intercooler cooling system.
JVM0653X
CHECKING INTERCOOLER
COOLANT LEVEL
Check the coolant level in the reservoir when
the engine is cold. If the coolant level is
below the MIN level
, add coolant to the
MAX level.
If the intercooler cooling system frequently
requires coolant, have it checked. It is
recommended you visit an INFINITI retailer
for this service.
CHANGING INTERCOOLER
COOLANT
Intercooler coolant is maintenance-free.
If replacement is required, it is recommended
you visit an INFINITI retailer for this service.
Improper servicing can result in intercooler
overheating.
WARNING
. To avoid the danger of being scalded,
never change the coolant when the
engine is hot.
. Never remove the cap when the
engine is hot. Serious burns could be
caused by high pressure fluid escap-
ing from the intercooler cooling re-
servoir.
. Avoid direct skin contact with used
coolant. If skin contact is made, wash
thoroughly with soap or hand cleaner
as soon as possible.
. Keep coolant out of the reach of
children and pets.
Intercooler coolant must be disposed of
properly. Check your local regulations.

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
Drive belts*:
Check engine drive belts for wear, fraying or
cracking and for proper tension. Replace any
damaged drive belts.
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.8-3) 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.
Intercooler coolant:
Intercooler coolant is maintenance-free.
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.
CHASSIS AND BODY MAINTE-
NANCE
Brake lines and cables:
Visually inspect for proper installation.
Check for chafing, cracks, deterioration,
and signs of leaking. Replace any deterio-
rated or damaged parts immediately.
Maintenance and schedules9-5
EXPLANATION OF SCHEDULED
MAINTENANCE ITEMS

11-2
ChimesAudible reminders .......................................... 2-17
Seat belt warning light and chime ............ 2-14
Circuit breaker
Fusible link ....................................................... 8-18
Cleaning exterior and interior .................... 7-2, 7-5
Climate control
Automatic air conditioner ........................... 4-37
Clock ...................................................................... 2-28
Coat hooks ............................................................ 2-48
Cockpit ...................................................................... 2-3
Cold weather driving ........................................ 5-135
Console box ........................................................... 2-47
Coolant Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine coolant ............................... 8-5
Checking engine coolant level ...................... 8-4
Corrosion protection ............................................. 7-7
Courtesy light ....................................................... 2-56
Cruise control ....................................................... 5-69 Fixed speed cruise control (on
ICC system) .................................................... 5-88
Intelligent Cruise Control (ICC) ................. 5-71
Cruise indicator .................................................... 2-22
Cup holders ........................................................... 2-45
Current fuel consumption ................................. 2-26
D
Daytime running light system .......................... 2-38 Defroster switch
Rear window and outside mirror
defroster switch ............................................. 2-34
Dimensions ......................................................... 10-10
Direct Adaptive Steering ................................. 5-124
Distance Control Assist (DCA) ........................ 5-92
Distance to empty ............................................... 2-26
Drive belts .............................................................. 8-13
Drive positioner .................................................... 3-32
Driver assist system indicator .......................... 2-23
Driving Cold weather driving .................................. 5-135
Driving with automatic transmission ....... 5-16
Precautions when starting and driving ..... 5-4
E
ECO drive indicator light ................................... 2-15
ECO mode ............................................................. 5-22
ECO pedal system ............................................... 5-22
Economy
Fuel ................................................................. 5-120
Elapsed time ......................................................... 2-26
Elapsed time and trip odometer ..................... 2-26
Emission control information label ............... 10-12
Emission control system warranty .............. 10-20
Engine Before starting the engine .......................... 5-14
Break-in schedule ........................................ 5-119
Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine coolant ............................... 8-5 Changing engine oil and filter ...................... 8-7
Checking engine coolant level ...................... 8-4
Checking engine oil level ............................... 8-7
Coolant temperature gauge ......................... 2-8
Emergency engine shut off ......................... 5-13
Engine block heater ................................... 5-136
Engine compartment check locations ........ 8-3
Engine cooling system ................................... 8-3
Engine oil ........................................................... 8-7
Engine oil and filter
replacement indicator ................................... 2-24
Engine oil and oil
filter recommendation .................................. 10-6
Engine oil viscosity ........................................ 10-7
Engine serial number ................................. 10-12
Engine specifications ................................... 10-8
Engine start operation indicator ............... 2-20
If your vehicle overheats ................................ 6-7
Remote engine start ..................................... 3-19
Remote engine start
operation indicator ........................................ 2-20
Starting the engine ....................................... 5-15
Engine coolant temperature gauge .................. 2-8
Entry/exit function Automatic drive positioner ......................... 3-32
Event Data Recorders (EDR) ........................ 10-23
Exhaust gas (carbon monoxide) ........................ 5-4
Explanation of scheduled
maintenance items ................................................. 9-5

11-4
INFINITI Vehicle Immobilizer System ............ 2-30Engine start .................................................... 2-30
Inside mirror .......................................................... 3-29
Inspection/maintenance (I/M) test ............. 10-22
Instrument brightness control ......................... 2-40
Instrument panel ..................................................... 2-5
Intelligent All-Wheel Drive (AWD) ............... 5-121
Intelligent Cruise Control (ICC) ........................ 5-71
Intelligent Cruise Control (ICC) system
ON indicator ......................................................... 2-22
Intelligent Key .......................................................... 3-2
Intelligent Key system ........................................... 3-6 Battery replacement ..................................... 8-19
Key operating range ....................................... 3-8
Key operation ................................................... 3-9
Warning signals .............................................. 3-13
Intercooler cooling system .................................. 8-5
Interior light control switch .............................. 2-55
Interior light replacement .................................. 8-24
Interior lights ......................................................... 2-54
Interior trunk lid release .................................... 3-24
ISOFIX child restraint ......................................... 1-23
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
Labels Air bag warning labels ................................. 1-58
Air conditioner specification label ......... 10-13
Emission control information label ........ 10-12
Engine serial number ................................. 10-12
F.M.V.S.S./C.M.V.S.S.
certification label ........................................ 10-12
Tire and Loading
information label ............................. 8-28, 10-13
Vehicle identification number (VIN) ....... 10-11
Lane Departure Warning (LDW)/Lane
Departure Prevention (LDP) ............................ 5-33
LATCH system ..................................................... 1-23
License plate
Installing front license plate .................... 10-14
Light
Air bag warning light .................................... 1-58
Bulb replacement ........................................... 8-22
Fog light switch ............................................. 2-41
Headlight switch ............................................ 2-34
Indicator lights ................................................ 2-15
Interior light control switch ........................ 2-55
Interior lights ................................................... 2-54
Map lights ........................................................ 2-54
Personal lights ................................................ 2-54
Replacement ................................................... 8-22
Trunk light ....................................................... 2-56 Vanity mirror lights ....................................... 2-56
Warning/indicator lights and
audible reminders .......................................... 2-10
Lights
Exterior and interior light replacement ... 8-24
Loading information (See vehicle
loading information) ......................................... 10-16
Lock
Automatic door locks ..................................... 3-5
Door locks .......................................................... 3-4
Power door lock ............................................... 3-4
Trunk lid ........................................................... 3-22
Locking with mechanical key ............................. 3-4
Log-in function .................................................... 3-15
Loose Fuel Cap warning ........................ 2-21, 3-27
Low fuel warning light ....................................... 2-12
Low outside temperature warning ................. 2-22
Low tire pressure warning light ...................... 2-12
Low tire pressure warning system
(See Tire Pressure Monitoring
System (TPMS)) ................................ 5-5, 6-3, 8-26
M
Maintenance
Battery .............................................................. 8-11
General maintenance ...................................... 9-2
Indicators for maintenance (vehicle
information display) ...................................... 2-23
Inside the vehicle ............................................. 9-3
Maintenance log ............................................ 9-11
Maintenance precautions .............................. 8-2