2018 INFINITI Q50-HYBRID coolant temperature

8-6Do-it-yourself
JVM0251X
CHECKING ENGINE COOLANT
LEVEL
Models with non-pressurized ra-
diator reservoir tank
Check the coolant levelin the reservoir
when the engine is cold. If the coolant level
is below MIN
, open the reservoir tank cap
and add coolant up to the MAXlevel. If the
reservoir tank is empty, check the coolant
level in the radiator when the engine is cold.
If there is insufficient coolant in the radiator,
fill the radiator with coolant up to the filler
opening and also add it to the reservoir tank
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.
JVM0343X
Models with pressurized radiator
reservoir tank
Check the coolant level in the reservoir tank
when the engine is running and after it
reaches normal operating temperature. If
the coolant level is below MIN level
, add
coolant up to the MAX level. If the
reservoir tank is empty, check the coolant
level in the radiator when the engine is cold.
If there is insufficient coolant in the radiator,
fill the radiator with coolant up to the filler
cap above the radiator upper hose opening
and also add it to the reservoir tank up to the
MAX level
. Put on the filler cap above the
radiator upper hose and with the reservoir
cap open, start the engine. Run the engine

CHANGING INVERTER COOLANT
An INFINITI ratailer can change the inverter
coolant. The service procedure can be found
in the INFINITI Service Manual.
Improper servicing can result in inverter
overheating.
WARNING
.To avoid the danger of being scalded,
never change the coolant when the
inverter is hot.
. Never remove the cap when the
inverter is hot. Serious burns could
be caused by high pressure fluid
escaping from the inverter coolant
reservoir.
. 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.
Inverter coolant must be disposed of prop-
erly. Check your local regulations.
SDI2045
CHECKING ENGINE OIL LEVEL
1. Park the vehicle on a level surface and apply the parking brake.
2. Run the engine until it reaches operating temperature.
3. Turn off the engine. Wait more than 15
minutes for the oil to drain back into the
oil pan.
4. Remove the dipstick and wipe it clean. Reinsert it all the way.
5. Remove the dipstick again and check the oil level. It should be within the range
.
If the oil level is below, remove the oil
filler cap and pour recommended oil
through the opening. Do not overfill
.6. Recheck oil level with the dipstick.
It is normal to add some oil between oil
maintenance intervals or during the break-
in period, depending on the severity of
operating conditions.
CAUTION
Oil level should be checked regularly.
Operating the engine with an insuffi-
cient amount of oil can damage the
engine, and such damage is not covered
by warranty.
Do-it-yourself8-9
ENGINE OIL

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

EV mode odometer and twin
trip odometer ........................................................ 2-27
Event Data Recorders (EDR) ......................... 10-21
Exhaust gas (carbon monoxide) ........................ 5-4
Explanation of scheduled
maintenance items ................................................. 9-5
F
F.M.V.S.S./C.M.V.S.S. certification label .... 10-11
FilterAir cleaner housing filter ............................. 8-16
Changing engine oil and oil filter ............. 8-10
Flashers (See hazard warning
flasher switch) ......................................................... 6-2
Flat tire ...................................................................... 6-3
Flat Tire - Visit dealer warning ....................... 2-22
Flat towing ......................................................... 10-18
Floor mat cleaning ................................................. 7-6
Floor mat installation ............................................ 7-7
Fluid Automatic Transmission Fluid (ATF) ....... 8-12
Brake fluid ....................................................... 8-12
Capacities and
recommended fluids/lubricants ................. 10-2
Engine coolant .................................................. 8-5
Engine oil ........................................................... 8-9
Window washer fluid ................................... 8-13
Fog light switch ................................................... 2-43
Forward Emergency Braking (FEB) ............ 5-104
Forward Emergency Braking (FEB) system
warning light .......................................................... 2-11 Front passenger air bag and status light ..... 1-45
Front power seat adjustment ............................. 1-3
Front seat
Front seat adjustment .................................... 1-3
Fuel Capacities and
recommended fluids/lubricants ................. 10-2
Fuel economy ............................................... 5-122
Fuel octane rating ........................................ 10-4
Fuel recommendation .................................. 10-4
Fuel-filler cap .................................................. 3-24
Fuel-filler door ............................................... 3-24
Gauge ................................................................... 2-7
Fuel economy history .................. Hybrid System-7
Fuel Efficient Driving Tips .............................. 5-121
Fuses ....................................................................... 8-19
Fusible links ........................................................... 8-20
G
Garage door opener HomeLink®Universal Transceiver ............ 2-59
Gas cap ................................................................... 3-24
Gauge ........................................................................\
. 2-5 Engine coolant temperature gauge .......... 2-29
Fuel gauge .......................................................... 2-7
Odometer ........................................................... 2-6
Speedometer ..................................................... 2-6
Tachometer ........................................................ 2-7
Trip computer ................................................. 2-27
General maintenance ............................................. 9-2
Glove box ............................................................... 2-49
H
Hazard warning flasher switch ........................... 6-2
Head restraints/headrests .................................. 1-5
Headlights
Aiming control (See Adaptive Front
lighting System (AFS)) ................................. 2-41
Headlight switch ............................................ 2-36
Heated seats ......................................................... 2-44
Heated steering wheel ....................................... 2-45
Heater Engine block heater ................................... 5-136
High beam assist ................................................. 2-38
High temperature warning ............................... 2-22
High voltage cautions ................. Hybrid System-2
High voltage components ....... Hybrid System-10
Hill start assist system ..................................... 5-134
HomeLink
®Universal Transceiver .................. 2-59
Hood release ......................................................... 3-21
Hook Coat hooks ...................................................... 2-51
Trunk hooks .................................................... 2-51
Horn ........................................................................\
. 2-43
Hybrid system over heat warning .................. 2-22
Hybrid system start operation indicator ....... 2-20
Hybrid
vehicle characteristics ............... Hybrid System-11
Hybrid vehicle precautions ...... Hybrid System-10
11-3

Starting the INFINITI Direct Response
Hybrid®System .............................................. 5-14
Status light, Front passenger air bag ............ 1-45
Steering
Direct Adaptive Steering ........................... 5-126
Heated steering wheel ................................. 2-45
Power steering system .............................. 5-126
Tilt/telescopic steering ................................ 3-27
Storage ................................................................... 2-47
Storage box ........................................................... 2-50
Sun visors ............................................................... 3-27
Sunglasses holder ................................................ 2-49
Supplemental air bag warning labels ............. 1-54
Supplemental air bag warning light ... 1-54, 2-14
Supplemental restraint system ........................ 1-37 Precautions on supplemental
restraint system ............................................. 1-37
Switch Autolight switch ............................................. 2-37
Fog light switch ............................................. 2-43
Hazard warning flasher switch .................... 6-2
Headlight switch ............................................ 2-36
Ignition switch ................................................ 5-15
Power door lock switch ................................. 3-5
Rear window and outside mirror
defroster switch ............................................. 2-36
Turn signal switch ......................................... 2-42
Vehicle Dynamic Control (VDC)
off switch ......................................................... 2-43T
Tachometer .............................................................. 2-7
Temperature Engine coolant temperature gauge .......... 2-29
Theft (INFINITI Vehicle Immobilizer System)
Engine start ..................................................... 2-32
Three-way catalyst ................................................ 5-5
Tilt/telescopic steering ...................................... 3-27
Tire Flat Tire - Visit dealer warning ................. 2-22
Run-flat tires .................................................... 6-4
Tire replacement indicator .......................... 2-25
Tire rotation .................................................... 8-36
Tire pressure
Low tire pressure warning light ................ 2-12
Tire Pressure Low - Add Air warning ........... 2-21
Tires Flat tire ............................................................... 6-3
Low tire pressure
warning system ........................... 5-5, 6-3, 8-28
Run-flat tires ................................................. 8-34
Tire and Loading
information label ............................. 8-30, 10-12
Tire chains ........................................................ 8-35
Tire dressing ...................................................... 7-4
Tire pressure .................................................. 8-28
Tire Pressure Monitoring
System (TPMS) ........................... 5-5, 6-3, 8-28
Types of tires ................................................. 8-34
Uniform tire quality grading .................... 10-18 Wheel/tire size ............................................... 10-9
Wheels and tires ........................................... 8-28
Towing
Flat towing ................................................... 10-18
Tow truck towing ............................................ 6-9
Towing a trailer ........................................... 10-18
TPMS
Tire Pressure
Monitoring System .................... 5-5, 6-3, 8-28
TPMS with Tire Inflation Indicator ............ 5-8
Trailer towing .................................................... 10-18
Transceiver HomeLink
®Universal Transceiver ............ 2-59
Transmission Automatic Transmission Fluid (ATF) ....... 8-12
Driving with automatic transmission ....... 5-15
Transmission shift lever lock release ....... 5-18
Transmitter (See remote keyless
entry system) ........................................................ 3-15
Traveling or registering in
another country ................................................ 10-10
Trip computer ....................................................... 2-27
Trip odometer ....................................................... 2-29
Trunk Interior trunk lid release .............................. 3-24
Light .................................................................. 2-58
Trunk hooks .................................................... 2-51
Trunk lid ........................................................... 3-22
Trunk lid release switch ............................... 3-22
Trunk open request switch ......................... 3-22
Trunk release power cancel switch .......... 3-23
11-7