2018 INFINITI Q70-HYBRID battery replacement

2-24Instruments and controls
Key battery is running out of power.
If this indicator appears, replace the battery
with a new one. (See “Intelligent Key battery
replacement” (P.8-21).)
7. Intelligent Key ignition indicator
This indicator appears when the Intelligent
Key battery is running out of power and
when the Intelligent Key System and vehicle
are not communicating normally.
If this indicator appears, touch the ignition
switch with the Intelligent Key while depres-
sing the brake pedal. (See “Intelligent Key
battery discharge” (P.5-12).)
8. Parking brake release warning
This warning appears when the vehicle
speed is above 4 MPH (7 km/h) and the
parking brake is applied.
9. Low fuel warning
This warning appears when the fuel level in
the tank is getting low. Refuel as soon as it is
convenient, preferably before the fuel gauge
reaches the empty (0) position.
There is a small reserve of fuel remaining in
the tank when the fuel gauge reaches the
empty (0) position.
10. Low washer fluid warning
This warning appears when the washer tank
fluid is at a low level. Add washer fluid as
necessary. (See “Window washer fluid” (P.8-
12).)
11. Door/trunk open warning (igni-
tion switch is in the ON position)
This warning appears if any of the doors
and/or the trunk lid are open or not closed
securely. The vehicle icon indicates which
door or the trunk lid is open on the display.
12. Intelligent Key system warning
This warning appears if there is a malfunc-
tion in the steering lock system or Intelligent
Key system.
If this warning appears while the hybrid
system is stopped, the steering lock (if so
equipped) cannot be released or the hybrid
system cannot be started. If this warning
appears while the hybrid system is running,
the vehicle can be driven. However, it is
recommended you contact an INFINITI
retailer for repair as soon as possible.
13. Loose fuel cap warning
This warning appears when the fuel-filler
cap is not tightened correctly after the
vehicle has been refueled. (See “Fuel-filler
cap” (P.3-22).)
14. Check tire pressure warning
This warning appears when the low tire
pressure warning light in the meter illumi-
nates and low tire pressure is detected. If
this warning appears, stop the vehicle and
adjust the pressure to the recommended
COLD tire pressure shown on the recom-
mended COLD tire pressure shown on the
Tire and Loading Information label. (See
“Low tire pressure warning light” (P.2-15)
and “Tire Pressure Monitoring System
(TPMS) ” (P.5-5).)
15. “TIMER” indicator
This indicator appears when the set “TIMER”
indicator activates. You can set the time for
up to 6 hours. (See “Trip computer” (P.2-
28).)
16. Low outside temperature
warning
This warning appears if the outside tem-
perature is below 37°F (3°C). The warning
can be set not to be displayed. (See “Trip
computer” (P.2-28).)
17. Hybrid system over heat warn-
ing
This warning appears when the temperature
of the hybrid system is too high. Stop the
vehicle in a safe location as soon as possible.

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.
. The Intelligent Key transmits radio
waves when the buttons are pushed.
The FAA advises that the radio
waves may affect aircraft navigation
and communication systems. Do not
operate the Intelligent Key while on
an airplane. Make sure the buttons
are not operated unintentionally
when the unit is stored during a
flight.
The Intelligent Key system can operate all
the doors and the trunk lid using the remote
controller function or pushing the request
switch on the vehicle without taking the key
out from a pocket or purse. The operating
environment and/or conditions may affect
the Intelligent Key system operation.
Be sure to read the following before using
the Intelligent Key system.
CAUTION
. Be sure to carry the Intelligent Key
with you when operating the vehicle.
. Never leave the Intelligent Key in the
vehicle when you leave the vehicle.
The Intelligent Key is always communicating
with the vehicle as it receives radio waves.
The Intelligent Key system transmits weak
radio waves. Environmental conditions may
interfere with the operation of the Intelligent
Key system under the following operating
conditions.
. When operating near a location where
strong radio waves are transmitted, such
as a TV tower, power station and broad-
casting station.
. When in possession of wireless equip-
ment, such as a cellular telephone,
transceiver, and CB radio.
. When the Intelligent Key is in contact
with or covered by metallic materials.
. When any type of radio wave remote
control is used nearby.
. When the Intelligent Key is placed near
an electric appliance such as a personal
computer. .
When the vehicle is parked near a parking
meter.
In such cases, correct the operating condi-
tions before using the Intelligent Key func-
tion or use the mechanical key.
Although the life of the battery varies
depending on the operating conditions, the
battery’s life is approximately 2 years. If the
battery is discharged, replace it with a new
one.
When the Intelligent Key battery is almost
discharged, see “Intelligent Key battery dis-
charge” (P.5-12) to start the Direct Re-
sponse Hybrid
®System.
Since the Intelligent Key is continuously
receiving radio waves, if the key is left near
equipment which transmits strong radio
waves, such as signals from a TV and
personal computer, the battery life may
become shorter.
For information regarding replacement of a
battery, see “Intelligent Key battery replace-
ment” (P.8-21).
For models with a steering wheel lock
mechanism: Because the steering wheel is
locked electrically, unlocking the steering
wheel with the ignition switch in the LOCK
position is impossible when the vehicle
battery is completely discharged. Pay special
attention that the vehicle battery is not
completely discharged.
Pre-driving checks and adjustments3-7
INTELLIGENT KEY SYSTEM

5-12Starting and driving
CAUTION
Do not leave the vehicle with the push-
button ignition switch in ACC or ON
positions when the hybrid system is not
running for an extended period. This can
discharge the 12-volt battery.
EMERGENCY ENGINE SHUT OFF
To shut off the engine in an emergency
situation while driving, perform the follow-
ing procedure:
.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.
SSD0860
INTELLIGENT KEY BATTERY DIS-
CHARGE
If the battery of the Intelligent Key is
discharged, or environmental conditions in-
terfere with the Intelligent Key operation,
start the hybrid system according to the
following procedure:
1. Move the shift lever to the P (Park) position.
2. Firmly apply the foot brake.
3. Touch the ignition switch with the Intelligent Key as illustrated. (A chime
will sound.)
4. Push the ignition switch while depressing the brake pedal within 10 seconds after
the chime sounds. The hybrid system will
start.
After step 3 is performed, when the ignition
switch is pushed without depressing the
brake pedal, the ignition switch position will
change to ACC.
NOTE:
. When the ignition switch is pushed to
the ACC or ON position or the hybrid
system is started by the above proce-
dures, the Intelligent Key battery dis-
charge indicator appears on the vehicle
information display even if the Intelli-
gent Key is inside the vehicle. This is not
a malfunction. To turn off the Intelligent
Key battery discharge indicator, touch
the ignition switch with the Intelligent
Key again.
. If the Intelligent Key battery discharge
indicator appears, replace the battery as
soon as possible. (See “Intelligent Key
battery replacement” (P.8-21).)

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............................................ 8-6
Inverter cooling system.................................................... 8-7 Checking inverter coolant level ................................ 8-8
Changing inverter coolant.......................................... 8-8
Engine oil.....................................................................\
......... 8-8
Checking engine oil level ............................................ 8-8
Changing engine oil and filter................................... 8-9
Automatic Transmission Fluid (ATF).......................... 8-11
Power steering fluid........................................................ 8-11
Brake fluid...................................................................\
....... 8-12 Brake fluid .................................................................... 8-12
Window washer fluid...................................................... 8-12
12-volt battery ................................................................. 8-13 Checking battery fluid level..................................... 8-14
Jump starting............................................................... 8-15
Spark plugs ........................................................................\
8-15 Replacing spark plugs................................................ 8-15 Air cleaner........................................................................\
.. 8-16
Windshield wiper blades ............................................... 8-17
Cleaning....................................................................... 8-17
Replacing..................................................................... 8-17
Brakes..................................................................\
............... 8-18 Self-adjusting brakes............................................... 8-18
Brake pad wear warning........................................ 8-18
Fuses...................................................................\
................ 8-19 Engine compartment or trunk room ................... 8-19
Passenger compartment ....................................... 8-20
Intelligent Key battery replacement........................... 8-21
Lights........................................................................\
.......... 8-23 Headlights.................................................................. 8-24
Exterior and interior lights.................................... 8-24
Wheels and tires.............................................................. 8-26 Tire pressure .............................................................. 8-26
Tire labeling............................................................... 8-30
Types of tires............................................................. 8-32
Tire chains................................................................... 8-32
Changing wheels and tires..................................... 8-33

8-2Do-it-yourself
When performing any inspection or main-
tenance work on your vehicle, always take
care to prevent serious accidental injury to
yourself or damage to the vehicle. The
following are general precautions which
should be closely observed.
WARNING
.This vehicle has high voltage DC and
AC systems as well as a 12-volt
system. DC and AC high voltage is
very dangerous and can cause severe
burns and electric shock that may
result in serious injury or death.
. Never touch, disassemble, remove or
replace the high voltage parts, har-
nesses and their connectors. High
voltage cables are orange. Touching,
disassembling, removing or replacing
those parts and harnesses can cause
severe burns or electric shock that
may result in serious injury or death.
. Never try to remove the service plug
located in the trunk room. The service
plug is used only when the vehicle is
serviced by trained technicians wear-
ing personal protection equipment
and is part of the high voltage
system. Touching the service plug
can cause severe burns or electric shock that may result in serious injury
or death.
. The INFINITI Direct Response Hy-
brid
®System uses high voltage up to
408 volts. The system can be hot
while and after starting. Be careful of
both the high voltage and the high
temperature. Obey the caution labels
attached to the vehicle.
. Park the vehicle on a level surface,
apply the parking brake securely and
block the wheels to prevent the
vehicle from moving. Move the shift
lever to P (Park).
. Be sure the ignition switch is in the
OFF or LOCK position when per-
forming any parts replacement or
repairs.
. The engine can start at any time
without warning when the hybrid
system is in the READY to drive
mode. If you must work with the
Hybrid System in the READY to drive
mode, keep your hands, clothing, hair
and tools away from fans, belts and
any other parts that can move.
. It is advisable to secure or remove
any loose clothing and remove any
jewelry, such as rings, watches, etc.
before working on your vehicle. .
Always wear eye protection when-
ever you work on your vehicle.
. Your vehicle is equipped with an
automatic engine cooling fan. It may
come on at any time without warn-
ing, even if the ignition key is in the
OFF position and the engine is not
running. To avoid injury, always dis-
connect the negative battery cable
before working near the fan.
. If you must run the engine in an
enclosed space such as a garage, be
sure there is proper ventilation for
exhaust gases to escape.
. Never get under the vehicle while it is
supported only by a jack. If it is
necessary to work under the vehicle,
support it with safety stands.
. Keep smoking materials, flame and
sparks away from the fuel tank and
battery.
CAUTION
.Do not work under the hood while the
engine is hot. Turn the hybrid system
off and wait until it cools down.
. Avoid direct contact with used en-
gine oil and coolant. Improperly dis-
MAINTENANCE PRECAUTIONS

JUMP STARTING
If jump starting is necessary, see “Jump
starting” (P.6-10). If the INFINITI Direct
Response Hybrid
®System does not start
by jump starting, the 12-volt battery may
have to be replaced. It is recommended you
visit an INFINITI retailer for this service.
WARNING
Be sure the engine and the ignition
switch are off and that the parking
brake is engaged securely.
CAUTION
Be sure to use the correct socket to
remove the spark plugs. An incorrect
socket can damage the spark plugs.
SDI2020
REPLACING SPARK PLUGS
If replacement is required, it is recommended
you visit an INFINITI retailer for this service.
Iridium-tipped spark plugs
It is not necessary to replace the iridium-
tipped spark plugs as frequently as the
conventional type spark plugs since they will
last much longer. Follow the maintenance
schedule shown in the “9. Maintenance and
schedules” section, but do not reuse them by
cleaning or regapping.
Do-it-yourself8-15
SPARK PLUGS

CAUTION
Be careful not to allow children to
swallow the battery and removed parts.
SDI2451
To replace the battery:
1. Release the lock knob at the back of theIntelligent Key and remove the mechan-
ical key.
2. Insert a flat-blade screwdriver wrapped with a cloth into the slit of the corner and
twist it to separate the upper part from the lower part.
3. Replace the battery with a new one. Recommended battery:
CR2025 or equivalent
.Do not touch the internal circuit andelectric terminals as it could cause a
malfunction.
.Hold the battery by the edges. Hold-
ing the battery across the contact
points will seriously deplete the sto-
rage capacity.
.Make sure that the + side faces thebottom of the case.
Do-it-yourself8-21
INTELLIGENT KEY BATTERY
REPLACEMENT

9 Maintenance and schedules
Maintenance requirement................................................ 9-2General maintenance................................................... 9-2
Scheduled maintenance.............................................. 9-2
Where to go for service.............................................. 9-2
General maintenance ........................................................ 9-2 Explanation of maintenance items.......................... 9-2
Explanation of scheduled maintenance items ........... 9-5 Emission control system maintenance ................... 9-5
Chassis and body maintenance................................ 9-6 Maintenance schedules ................................................... 9-6
Additional maintenance items for severe
operating conditions.................................................. 9-6
Standard maintenance...................................................... 9-7 Emission control system maintenance ................. 9-8
Chassis and body maintenance............................ 9-10
Maintenance under severe driving conditions ........ 9-12
HEV Li-ion battery replacement record................... 9-13
Maintenance log.............................................................. 9-15