battery INFINITI G-COUPE 2011 Service Manual

8 Maintenance and do-it-yourself
Maintenance requirement.......................... 8-2
Scheduled maintenance ........................ 8-2
General maintenance ........................... 8-2
Where to go for service ......................... 8-2
General maintenance .............................. 8-2
Explanation of maintenance items ............... 8-2
Maintenance precautions .......................... 8-5
Engine compartment check locations ................ 8-7
VQ25HR/VQ37VHR engine ....................... 8-7
Engine cooling system ............................. 8-8
Checking engine coolant level ................... 8-9
Changing engine coolant ........................ 8-9
Engine oil ........................................ 8-9
Checking engine oil level ......................8-10
Changing engine oil and filter ..................8-10
Automatic transmission fluid ......................8-12
Power steering fluid .............................. 8-12
Brake and clutch fluid ............................ 8-13
Brake fluid ................................... 8-13
Clutch fluid (if so equipped) ....................8-13
Window washer fluid ............................. 8-14Battery
.......................................... 8-14
Coupe ........................................ 8-14
Sedan and coupe ............................. 8-15
Jump starting ................................. 8-16
Variable voltage control system ...................8-16
Drive belts ....................................... 8-17
Spark plugs ..................................... 8-18
Replacing spark plugs ......................... 8-18
Air cleaner ....................................... 8-18
Windshield wiper blades .......................... 8-19
Cleaning ...................................... 8-19
Replacing ..................................... 8-20
Brakes .......................................... 8-21
Self-adjusting brakes .......................... 8-21
Brake pad wear warning ....................... 8-21
Fuses ........................................... 8-21
Engine compartment ........................... 8-21
Passenger compartment ....................... 8-23
Intelligent
Key battery replacement ................8-24

restraints move up and down smoothly and that
the locks (if so equipped) hold securely in all
latched positions.
Steering wheel:Check for changes in the steer-
ing conditions, such as excessive free play,
hard steering or strange noises.
Warning lights and chimes: Make sure that all
warning lights and chimes are operating prop-
erly.
Windshield defroster: Check that the air comes
out of the defroster outlets properly and in
sufficient quantity when operating the heater or
air conditioner.
Windshield wiper and washer*: Check that the
wipers and washer operate properly and that
the wipers do not streak.
Under the hood and vehicle
The maintenance items listed here should be
checked periodically (for example, each time
you check the engine oil or refuel).
Battery*: Check the fluid level in each cell. It
should be between the MAX and MIN lines.
Vehicles operated in high temperatures or un-
der severe condition require frequent checks of
the battery fluid level. Brake fluid level*:
Make sure that the brake
fluid level is between the MAX and MIN lines on
the reservoir.
Engine coolant level*: Check the coolant level
when the engine is cold.
Engine drive belts*: Make sure that no belt is
frayed, worn, cracked or oily.
Engine oil level*: Check the level after parking
the vehicle on a level spot and turning off the
engine. Wait more than 15 minutes for the oil to
drain back into the oil pan.
Exhaust system: Make sure there are no loose
supports, cracks or holes. If the sound of the
exhaust seems unusual or there is a smell of
exhaust fumes, immediately have the exhaust
system inspected by an INFINITI retailer. (See
“PRECAUTIONS WHEN STARTING AND DRIVING”
in the “5. Starting and driving” section for
exhaust gas (Carbon monoxide).)
Fluid leaks: Check under the vehicle for fuel, oil,
water or other fluid leaks after the vehicle has
been parked for a while. Water dripping from
the air conditioner after use is normal. If you
should notice any leaks or if gasoline fumes are
evident, check for the cause and have it cor-
rected immediately. Power steering fluid level* and lines:
Check the
level when the fluid is cold, with the engine off.
Check the lines for proper attachment, leaks,
cracks, etc.
Radiator and hoses: Check the front of the
radiator and clean off any dirt, insects, leaves,
etc., that may have accumulated. Make sure the
hoses have no cracks, deformation, rot or loose
connections.
Underbody: The underbody is frequently ex-
posed to corrosive substances such as those
used on icy roads or to control dust. It is very
important to remove these substances, other-
wise rust will form on the floor pan, frame, fuel
lines and around the exhaust system. At the
end of winter, the underbody should be thor-
oughly flushed with plain water, being careful
to clean those areas where mud and dirt may
accumulate. For additional information, see
“CLEANING EXTERIOR” in the “7. Appearance
and care” section.
Windshield washer fluid*: Check that there is
adequate fluid in the reservoir.
8-4Maintenance and do-it-yourself

When performing any inspection or mainte-
nance work on your vehicle, always take care to
prevent serious accidental injury to yourself or
damage to the vehicle. The following are gen-
eral precautions which should be closely ob-
served.
WARNING
●Park the vehicle on a level surface, apply the
parking brake securely and block the wheels
to prevent the vehicle from moving. For
manual transmission models, move the shift
lever to N (Neutral). For automatic transmis-
sion models, move the selector lever to P
(Park).
● Be sure the ignition switch is in the OFF or
LOCK position when performing any parts
replacement or repairs.
● Never connect or disconnect the battery or
any transistorized component while the ig-
nition switch is in the ON position.
● Never leave the engine or automatic trans-
mission related component harnesses dis-
connected while the ignition switch is in the
ON position. ●
If you must work with the engine running,
keep your hands, clothing, hair and tools
away from moving fans, belts and any other
moving parts.
● 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 whenever you
work on your vehicle.
● 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 sup-
ported 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 fuel tank and the battery. ●
Your vehicle is equipped with an automatic
engine cooling fan. It may come on at any
time without warning, even if the ignition
key is in the OFF position and the engine is
not running. To avoid injury, always discon-
nect the negative battery cable before work-
ing near the fan.
● The fuel filter or fuel lines should be serviced
by an INFINITI retailer because the fuel lines
are under high pressure even when the en-
gine is off.
CAUTION
● Do not work under the hood while the engine
is hot. Turn the engine off and wait until it
cools down.
● Avoid direct contact with used engine oil and
coolant. Improperly disposed engine oil,
coolant, and/or other vehicle fluids can dam-
age the environment. Always conform to lo-
cal regulations for disposal of vehicle fluid.
MAINTENANCE PRECAUTIONS
Maintenance and do-it-yourself8-5

VQ25HR/VQ37VHR ENGINE
1. Fuse/fusible link holder
2. Battery
3. Engine oil filler cap
4. Brake fluid reservoir5. Clutch fluid reservoir (Manual Transmis-
sion models)
6. Window washer fluid reservoir
7. Power steering fluid reservoir
8. Air cleaner
9. Radiator filler cap 10. Drive belts
11. Engine coolant reservoir
12. Engine oil dipstick (for VQ37VHR engine
model)
13. Engine oil dipstick (for VQ25HR engine model)
SDI2709
ENGINE COMPARTMENT CHECK
LOCATIONS
Maintenance and do-it-yourself8-7

WARNING
Antifreeze is poisonous and should be stored
carefully in marked containers out of the reach
of children.
Fill the window washer fluid reservoir periodi-
cally. Add window washer fluid when the low
window washer fluid warning light comes on.
To fill the window washer fluid reservoir, lift the
cap off the reservoir tank and pour the window
washer fluid into the tank opening.
Add a washer solvent to the washer for better
cleaning. In the winter season, add a wind- shield washer antifreeze. Follow the manufac-
turer’s instructions for the mixture ratio.
Refill the reservoir more frequently when driv-
ing conditions require an increased amount of
window washer fluid.
Recommended fluid is Genuine NISSAN Wind-
shield Washer Concentrate Cleaner & Antifreeze
or equivalent.
CAUTION
●
Do not substitute engine anti-freeze coolant
for window washer solution. This may result
in damage to the paint.
● Do not fill the window washer reservoir tank
with washer fluid concentrates at full
strength. Some methyl alcohol based
washer fluid concentrates may permanently
stain the grille if spilled while filling the win-
dow washer reservoir tank.
● Pre-mix washer fluid concentrates with wa-
ter to the manufacturer’s recommended lev-
els before pouring the fluid into the window
washer reservoir tank. Do not use the win-
dow washer reservoir tank to mix the washer
fluid concentrate and water. ●
Keep the battery surface clean and dry.
Clean the battery with a solution of baking
soda and water.
● Make certain the terminal connections are
clean and securely tightened.
● If the vehicle is not to be used for 30 days or
longer, disconnect the negative () battery
terminal cable to prevent discharging it.
COUPE
CAUTION
When the battery cable is removed from the
battery terminal, do not close either of front
doors. The automatic window adjusting func-
tion will not work, and the side roof panel may
be damaged.
To disconnect the negative () battery terminal,
perform the procedure in the following order.
Otherwise, the window and the side roof panel
may contact and be damaged.
1. Close the windows.
2. Open the hood.
3. Close and lock all the doors.
4. Disconnect the negative () battery termi- nal.
5. Securely close the hood.
SDI2027
WINDOW WASHER FLUID BATTERY
8-14Maintenance and do-it-yourself

To connect the negative () battery terminal,
perform the procedure in the following order.
Otherwise, the window and the side roof panel
may contact and be damaged.
1. Unlock and open the driver side door. Donot close the door.
2. Open the hood.
3. Connect the negative () battery terminal. Then close the hood.
4. Fully open the driver side door window.
5. Close the driver side door and the win- dow.
SEDAN AND COUPE
WARNING
●Do not expose the battery to flames or elec-
trical sparks. Hydrogen gas generated by
the battery is explosive. Do not allow battery
fluid to contact your skin, eyes, fabrics, or
painted surfaces. After touching a battery or
battery cap, do not touch or rub your eyes.
Thoroughly wash your hands. If the acid con-
tacts your eyes, skin or clothing, immedi-
ately flush with water for at least 15 minutes
and seek medical attention. ●
Do not operate the vehicle if the fluid in the
battery is low. Low battery fluid can cause a
higher load on the battery which can gener-
ate heat, reduce battery life, and in some
cases lead to an explosion.
● When working on or near a battery, always
wear suitable eye protection and remove all
jewelry.
● Battery posts, terminals and related acces-
sories contain lead and lead compounds.
Wash hands after handling.
● Keep the battery out of the reach of children.
Check the fluid level in each cell (Remove the
battery cover if it is necessary). It should be
between the UPPER LEVEL1and LOWER LEVEL
2lines.
If it is necessary to add fluid, add only distilled
water to bring the level to the indicator in each
filler opening. Do not overfill.
DI0137MA
Maintenance and do-it-yourself8-15

1. Remove the cell plugsA.
2. Add distilled water up to the UPPER LEVEL
1line.
If the side of the battery is not clear, check
the distilled water level by looking directly
above the cell; the condition
1indicates
OK and the conditions
2needs more to be
added.
3. Tighten cell plugsA.
Vehicles operated in high temperatures or un-
der severe conditions require frequent checks
of the battery fluid level.
JUMP STARTING
If jump starting is necessary, see “JUMP START-
ING” in the “6. In case of emergency” section. If
the engine does not start by jump starting, the
battery may have to be replaced. Contact an
INFINITI retailer.
CAUTION
● Do not ground accessories directly to the
battery terminal. Doing so will bypass the
variable voltage control system and the ve-
hicle battery may not charge completely.
● Use electrical accessories with the engine
running to avoid discharging the vehicle
battery.
The variable voltage control system measures
the amount of electrical discharge from the
battery and controls voltage generated by the
generator.
SDI1480C
VARIABLE VOLTAGE CONTROL SYSTEM
8-16Maintenance and do-it-yourself

2. Open the engine hood and remove thecover on the battery and the fuse/fusible
link holder.
3. Remove the fuse/fusible link holder cover.
4. Remove the fuse with the fuse puller.
5. If the fuse is open
A, replace it with a
new fuse
B. Spare fuses are stored in the
passenger compartment fuse box.
6. If a new fuse also opens, have the elec- trical system checked and repaired by an
INFINITI retailer.
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.
SDI1754
8-22Maintenance and do-it-yourself

PASSENGER COMPARTMENT
CAUTION
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
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 head-
light switch is turned to OFF.
2. Open the fuse box lid. 3. Remove the fuse with the fuse puller
A.
4. If the fuse is open, replace it with a new fuse.
5. If a new fuse also opens, have the electri- cal system checked and repaired by an
INFINITI retailer. Spare fuses are stored in
the fuse box.Extended storage switch (if equipped)
To reduce battery drain, the extended storage
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 any electrical equipment does not operate,
remove the extended storage switch and check
for an open fuse.
SDI2034SDI2704
Maintenance and do-it-yourself8-23

NOTE:
If the extended storage switch malfunctions, or
if the fuse is open, it is not necessary to replace
the switch. In this case, remove the extended
storage switch and replace it with a new fuse of
the same rating.
How to remove the extended storage switch:
1. To remove the extended storage 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
1found on each
side of the storage switch.
5. Pull the storage switch straight out from the fuse box
2.
Replace the battery as follows:1. Release the lock knob at the back of theIntelligent Key and remove the mechanical
key.
2. Insert a flat-blade screwdriver
A
wrapped with a cloth into the slitBof
the corner and twist it to separate the
upper part from the lower part. 3. Replace the battery with a new one.
Recommended battery: CR2032 or equivalent.
●
Do not touch the internal circuit and
electric terminals as it could cause a
malfunction.
● Hold the battery by the edges. Holding
the battery across the contact points will
seriously deplete the storage capacity.
● Make sure that the + side faces the
bottom of the case.
4. Align the tips of the upper and lower parts, and then push them together until
it is securely closed.
5. Push the buttons two or three times to check its operation.
SDI1834SDI2042
INTELLIGENT KEY BATTERY REPLACEMENT
8-24Maintenance and do-it-yourself