2018 INFINITI Q50 HYBRID warning light

To shut off the INFINITI Direct Response
Hybrid®System in an emergency situation
while driving, perform the following proce-
dure:
. Rapidly push the push-button ignition
switch 3 consecutive times in less than
1.5 seconds, or
. Push and hold the push-button ignition
switch for more than 2 seconds. Your vehicle is equipped with run-flat tires
and you can continue driving to a safe
location even if they are punctured. (See
“Run-flat tires” (P.8-34).)
TIRE PRESSURE MONITORING
SYSTEM (TPMS)
This vehicle is equipped with the Tire
Pressure Monitoring System (TPMS). It
monitors tire pressure of all tires except the
spare. When the low tire pressure warning
light is lit and the “Tire Pressure Low - Add
Air” warning appears in the vehicle informa-
tion display, one or more of your tires is
significantly under-inflated. If the vehicle is
being driven with low tire pressure, the
TPMS will activate and warn you of it by
the low tire pressure warning light. This
system will activate only when the vehicle is
driven at speeds above 16 MPH (25 km/h).
For more details, see “Low tire pressure
warning light” (P.2-12) and “Tire Pressure
Monitoring System (TPMS)” (P.5-5).
WARNING
.
Radio waves could adversely affect
electric medical equipment. Those
who use a pacemaker should contact
the electric medical equipment man-
ufacturer for the possible influences before use.
. If the low tire pressure warning light
illuminates while driving, avoid sud-
den steering maneuvers or abrupt
braking, reduce vehicle speed, pull
off the road to a safe location and
stop the vehicle as soon as possible.
Driving with under-inflated tires may
permanently damage the tires and
increase the likelihood of tire failure.
Serious vehicle damage could occur
and may lead to an accident and
could result in serious personal injury.
Check the tire pressure for all four
tires. Adjust the tire pressure to the
recommended COLD tire pressure
shown on the Tire and Loading
Information label to turn the low tire
pressure warning light OFF. If the
light still illuminates while driving
after adjusting the tire pressure, a
tire may be flat.
. When a wheel is replaced, the TPMS
will not function and the low tire
pressure warning light will flash for
approximately 1 minute. The light will
remain on after 1 minute. Have your
tires replaced and/or TPMS system
reset as soon as possible. It is recom-
mended you visit an INFINITI retailer
for these services.
In case of emergency6-3
EMERGENCY INFINITI DIRECT
RESPONSE HYBRID®SYSTEM SHUT OFFFLAT TIRE

Before attempting to jump start the vehicle,
make sure the fuel tank is not empty and the
correct starting procedure is followed. See
“Starting the INFINITI Direct Response
Hybrid
®System” (P.5-14). Do not drive the
vehicle on battery power only if the fuel tank
is empty. The Lithium ion (Li-ion) battery will
become discharged and the INFINITI Direct
Response Hybrid
®System will turn off.
CONFIRM BATTERY IS DIS-
CHARGED
If any of the following conditions occurs, the
12-volt battery might discharged:
. The instrument cluster and/or headlights
are not normal brightness.
. Audio accessories cannot be turned on.
. The hybrid system does not become
READY to drive mode.
. The ignition switch cannot be placed in
the ON position.
Check the following if you notice above
conditions.
1. Check that the 12-volt battery terminals are tight and clean. See “12-volt battery”
(P.8-14). The 12-volt battery is located
on the left hand side of the trunk behind
an access panel. If the 12-volt battery
terminals are loose, it is recommended
you contact an INFINITI retailer. 2. If the 12-volt battery terminals are tight
and clean, try to jump start the vehicle.
See “Jump starting” (P.6-5).
If the hybrid system still does not start, it is
recommended that you contact an INFINITI
retailer. To start your INFINITI Direct Response
Hybrid
®System with a booster battery, the
instructions and precautions below must be
followed.
Jump starting provides power to the 12 volt
system to allow the electrical systems to
operate. The electrical systems must be
operating to allow the Lithium ion (Li-ion)
battery to be charged. Jump starting does
not charge the Li-ion battery.
WARNING
. If done incorrectly, jump starting can
lead to a 12-volt battery explosion,
resulting in severe injury or death. It
could also damage your vehicle.
. Explosive hydrogen gas is always
present in the vicinity of the 12-volt
battery. Make sure that the vent
tube is mounted.
. Do not allow battery fluid to come
into contact with eyes, skin, clothing
or painted surfaces. Battery fluid is a
corrosive sulfuric acid solution which
can cause severe burns. If the fluid
should come into contact with any-
thing, immediately flush the con-
tacted area with water.
. Keep the 12-volt battery out of the
reach of children.
In case of emergency6-5
IF THE VEHICLE DOES NOT STARTJUMP STARTING

8 Do-it-yourself
Maintenance precautions ................................................ 8-2
Engine compartment check locations ......................... 8-3VQ35HR engine ........................................................... 8-3
Engine cooling system ..................................................... 8-5 Checking engine coolant level .................................. 8-6
Changing engine coolant ........................................... 8-7
Inverter cooling system ................................................... 8-7 Checking inverter coolant level ................................ 8-8
Changing inverter coolant ......................................... 8-9
Engine oil ........................................................................\
..... 8-9
Checking engine oil level ............................................ 8-9
Changing engine oil and oil filter .......................... 8-10
Automatic Transmission Fluid (ATF) ......................... 8-12
Brake fluid ........................................................................\
. 8-12
Window washer fluid ..................................................... 8-13
12-volt battery ................................................................. 8-14
Checking battery fluid level .................................... 8-15
Jump starting .............................................................. 8-15
Spark plugs ........................................................................\
8-15 Replacing spark plugs ............................................... 8-16
Air cleaner ........................................................................\
.. 8-16 Windshield wiper blades ............................................... 8-17
Cleaning ...................................................................... 8-17
Replacing .................................................................... 8-18
Brakes ........................................................................\
........ 8-18 Self-adjusting brakes .............................................. 8-18
Brake pad wear warning ....................................... 8-18
Fuses ........................................................................\
.......... 8-19 Engine compartment and trunk ........................... 8-19
Passenger compartment ....................................... 8-20
Intelligent Key battery replacement .......................... 8-21
Lights ........................................................................\
........ 8-24 Headlights .................................................................. 8-25
Exterior and interior lights .................................... 8-25
Wheels and tires ............................................................ 8-28 Tire pressure ............................................................. 8-28
Tire labeling ............................................................... 8-32
Types of tires ........................................................... 8-34
Tire chains .................................................................. 8-35
Changing wheels and tires .................................... 8-36
Jacking up the vehicle and replacing tires ........ 8-39

engine damage.
6. Coat the gasket on the new filter with clean engine oil.
7. Screw in the oil filter clockwise until a slight resistance is felt, then tighten
additionally more than 2/3 turn.
Oil filter tightening torque:11 to 15 ft-lb
(14.7 to 20.5 N·m)
8. Clean and re-install the drain plug with a new washer. Securely tighten the drain
plug with a wrench.
Drain plug tightening torque:
22 to 29 ft-lb
(29 to 39 N·m)
Do not use excessive force.
9. Refill engine with recommended oil and install the oil filler cap securely.
CAUTION
The dipstick must be inserted in place to
prevent oil spillage from the dipstick
hole while filling the engine with oil.
See “Capacities and recommended
fluids/lubricants” (P.10-2) for drain and refill capacity. The drain and refill capa-
city depends on the oil temperature and
drain time. Use these specifications for
reference only. Always use the dipstick
to determine the proper amount of oil in
the engine.
10. Start the engine and check for leakage around the drain plug and the oil filter.
Correct as required.
11. Turn the engine off and wait more than 15 minutes. Check the oil level with the
dipstick. Add engine oil if necessary.
After the operation
1. Install the engine undercover into posi-
tion as the following steps.
a. Pull the center of the small plastic clipout.
b. Hold the engine undercover into posi- tion.
c. Insert the clip through the undercover into the hole in the frame, then push
the center of the clip in to lock the clip
in place.
d. Install the other bolts that hold the undercover in place. Be careful not to
strip the bolts or over-tighten them.
2. Lower the vehicle carefully to the ground. 3. Dispose of waste oil and filter properly.
WARNING
.
Prolonged and repeated contact with
used engine oil may cause skin cancer.
. Try to avoid direct skin contact with
used oil. If skin contact is made, wash
thoroughly with soap or hand cleaner
as soon as possible.
. Keep used engine oil out of reach of
children.
Do-it-yourself8-11

8-12Do-it-yourself
When checking or replacement is required,
we recommend an INFINITI retailer for
servicing.
CAUTION
.It is recommended you use only
Genuine NISSAN Matic S ATF. Do
not mix with other fluids.
. Using automatic transmission fluid
(ATF) other than Genuine NISSAN
Matic S ATF may cause deterioration
in driveability and automatic trans-
mission durability, and may damage
the automatic transmission. Damage
caused by the use of fluid other than
as recommended is not covered by
the INFINITI new vehicle limited
warranty. For further brake fluid information, see
“Capacities and recommended fluids/lubri-
cants” (P.10-2) of this manual.
WARNING
.
Use only new fluid from a sealed
container. Old, inferior or contami-
nated fluid may damage the brake
system. The use of improper fluids
can damage the brake system and
affect the vehicle’s stopping ability.
. Clean the filler cap before removing.
. Brake fluid is poisonous and should
be stored carefully in marked con-
tainers out of the reach of children.
CAUTION
Do not spill the fluid on painted surfaces.
This will damage the paint. If fluid is
spilled, wash the surface with water.
JVM0053X
Check the fluid level in the reservoir. If the
fluid is below the MIN lineor the brake
warning light comes on, add Genuine
NISSAN Super Heavy Duty Brake Fluid or
equivalent DOT 3fluid up to the MAX line
.
If fluid must be added frequently, the system
should be checked. It is recommended you
visit an INFINITI retailer for this service.
AUTOMATIC TRANSMISSION
FLUID (ATF) BRAKE FLUID

Under some driving or climate conditions,
occasional brake squeak, squeal or other
noise may be heard. Occasional brake noise
during light to moderate stops is normal and
does not affect the function or performance
of the brake system.
Proper brake inspection intervals should be
followed.For additional information, see the
maintenance schedule shown in the “9.
Maintenance and schedules” section.
JVM0255X
Engine compartment
JVM0322X
Trunk
ENGINE COMPARTMENT AND
TRUNK
WARNING
Never use a fuse of a higher or lower
amperage rating than that specified on
the fuse box cover. This could damage
the electrical system or electronic con-
trol units or cause a fire.
If any electrical equipment does not operate,
check for an open fuse.
1. Be sure the ignition switch is pushed to the OFF or LOCK position and the
headlight switch is turned to OFF.
2. Open the engine hood or trunk lid and to access the cover on the fuse/fusible link
holder.
3. Remove the fuse/fusible link holder cover.
4. Remove the fuse with the fuse puller.
Do-it-yourself8-19
FUSES

8-20Do-it-yourself
SDI1754
5. If the fuse is open, replace it with a
new fuse. Spare fuses are stored in the
passenger compartment fuse box.
6. If a new fuse also opens, have the electrical system checked and repaired.
It is recommended you visit an INFINITI
retailer for this service.
Fusible links
If any electrical equipment does not operate
and fuses are in good condition, check the
fusible links. If any of these fusible links are
melted, replace only with genuine INFINITI
parts.
JVM0256X
PASSENGER COMPARTMENT
WARNING
Never use a fuse of a higher or lower
amperage rating than that specified on
the fuse box cover. This could damage
the electrical system or electronic con-
trol units or cause a fire.
If any electrical equipment does not operate,
check for an open fuse.
1. Be sure the ignition switch is pushed to the OFF or LOCK position and the
headlight switch is turned to OFF. 2. Open the fuse box lid.
3. Remove the fuse with the fuse puller
.
4. If the fuse is open, replace it with a new fuse.
5. If a new fuse also opens, have the electrical system checked and repaired.
It is recommended you visit an INFINITI
retailer for this service. Spare fuses are
stored in the fuse box.

JVM0257X
Extended storage fuse switch (if so
equipped)
To reduce 12-volt battery drain, the ex-
tended storage fuse switch comes from the
factory switched off. Prior to delivery of
your vehicle, the switch is pushed in
(switched on) and should always remain on.
If the extended storage fuse switch is not
pushed in (switched on), the “Shipping Mode
On, Push Storage Fuse” warning may appear
in the vehicle information display. See “23.
Extended storage fuse warning” (P.2-23).
If any electrical equipment does not operate,
remove the extended storage fuse switch
and check for an open fuse.NOTE:
If the extended storage fuse switch mal-
functions or if the fuse is open, it is not
necessary to replace the switch. In this case,
remove the extended storage fuse switch
and replace it with a new fuse of the same
rating.
How to remove the extended storage fuse
switch:
1. To remove the extended storage fuse
switch, be sure the ignition switch is in
the OFF or LOCK position.
2. Be sure the headlight switch is in the OFF position.
3. Remove the fuse box cover.
4. Pinch the locking tabs
found on each
side of the storage fuse switch.
5. Pull the storage fuse switch straight out from the fuse box
.
CAUTION
Be careful not to allow children to
swallow the battery and removed parts.
Do-it-yourself8-21
INTELLIGENT KEY BATTERY
REPLACEMENT