Infiniti G37 Coupe (2012 year). Manual — part 27
8-20
Maintenance and do-it-yourself
ess. If the belt is in poor condition or
loose, have it replaced or adjusted by
an INFINITI retailer.
2. Have the belts checked regularly for
condition and tension in accordance
with the maintenance schedule in your
“INFINITI Service and Maintenance
Guide
”.
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, see an INFINITI
retailer for servicing.
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 main-
tenance schedule in
“INFINITI Service and
Maintenance Guide
”, but do not reuse
them by cleaning or regapping.
SPARK PLUGS
-------------------------------------------------------------------------------------------------------------------------------------------------------------
Always replace spark plugs with recom-
mended or equivalent ones.
SDI2033
Remove the retainers
*
1
as illustrated and
pull out the filter element
*
2
.
The filter element should not be cleaned
and reused. Replace it according to the
maintenance intervals. See
“INFINITI Ser-
vice and Maintenance Guide
” for mainte-
nance intervals. When replacing the filter,
wipe the inside of the air cleaner housing
and the cover with a damp cloth.
WARNING
. Operating the engine with the air
cleaner removed can cause you or others
to be burned. The air cleaner not only
cleans the air, it stops flame if the
engine backfires. If it isn
’t there, and the
engine backfires, you could be burned.
Do not drive with the air cleaner
removed, and be careful when working
on the engine with the air cleaner
removed.
. Never pour fuel into the throttle body or
attempt to start the engine with the air
cleaner removed. Doing so could result
in serious injury.
Maintenance and do-it-yourself
8-21
AIR CLEANER
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8-22
Maintenance and do-it-yourself
CLEANING
If your windshield is not clear after using
the windshield washer or if a wiper blade
chatters when running, wax or other
material may be on the blade or wind-
shield.
Clean the outside of the windshield with a
washer solution or a mild detergent. Your
windshield is clean if beads do not form
when rinsing with clear water.
Clean each blade by wiping it with a cloth
soaked in a washer solution or a mild
detergent. Then rinse the blade with clear
water. If your windshield is still not clear
after cleaning the blades and using the
wiper, replace the blades.
Worn windshield wiper blades can damage
the windshield and impair driver vision.
SDI2048
REPLACING
Replace the wiper blades if they are worn.
1. Pull the wiper arm.
2. Push the release tab
*
A
, and then
move the wiper blade down the wiper
arm
*
1
while pushing the release tab
to remove.
3. Insert the new wiper blade onto the
wiper arm until a click sounds.
4. Rotate the wiper blade so the dimple is
in the groove.
CAUTION
. After wiper blade replacement, return
the wiper arm to its original position;
otherwise it may be damaged when the
hood is opened.
. Make sure the wiper blades contact the
glass; otherwise the arm may be da-
maged from wind pressure.
WINDSHIELD WIPER BLADES
-------------------------------------------------------------------------------------------------------------------------------------------------------------
SDI2362
Be careful not to clog the washer nozzle
*
A
. This may cause improper windshield
washer operation. If the nozzle is clogged,
remove any objects with a needle or small
pin
*
B
. Be careful not to damage the
nozzle.
If the brakes do not operate properly, have
the brakes checked by an INFINITI retailer.
SELF-ADJUSTING BRAKES
Your vehicle is equipped with self-adjust-
ing brakes.
The disc-type brakes self-adjust every time
the brake pedal is applied.
WARNING
See an INFINITI retailer for a brake system
check if the brake pedal height does not
return to normal.
BRAKE PAD WEAR WARNING
The disc brake pads have audible wear
warnings. When a brake pad requires
replacement, it will make a high pitched
scraping sound when the vehicle is in
motion. This scraping sound will first occur
only when the brake pedal is depressed.
After more wear of the brake pad, the
sound will always be heard even if the
brake pedal is not depressed. Have the
brakes checked as soon as possible if the
wear warning sound is heard.
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 log section of your
“INFINITI Service and Maintenance Guide”
for maintenance intervals.
Maintenance and do-it-yourself
8-23
BRAKES
-------------------------------------------------------------------------------------------------------------------------------------------------------------
8-24
Maintenance and do-it-yourself
SDI1479A
ENGINE 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
headlight switch is turned to OFF.
2. Open the engine hood and remove the
cover 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.
SDI1754
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
electrical 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.
FUSES
-------------------------------------------------------------------------------------------------------------------------------------------------------------
SDI2034
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
headlight 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
electrical system checked and repaired
by an INFINITI retailer. Spare fuses are
stored in the fuse box.
SDI2704
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.
NOTE:
If the extended storage switch malfunc-
tions, or if the fuse is open, it is not
necessary to replace the switch. In this
Maintenance and do-it-yourself
8-25
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8-26
Maintenance and do-it-yourself
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
*
1
found on
each side of the storage switch.
5. Pull the storage switch straight out
from the fuse box
*
2
.
SDI1834
Replace the battery as follows:
1. Release the lock knob at the back of the
Intelligent Key and remove the mechan-
ical key.
2. Insert a flat-blade screwdriver
*
A
wrapped with a cloth into the slit
*
B
of the corner and twist it to separate
the upper part from the lower part.
SDI2042
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 con-
tact 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.
INTELLIGENT KEY BATTERY REPLACEMENT
-------------------------------------------------------------------------------------------------------------------------------------------------------------
5. Push the buttons two or three times to
check its operation.
See an INFINITI retailer if you need any
assistance for replacement.
FCC Notice:
For USA:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions: (1) This device
may not cause harmful interference, and
(2) this device must accept any interfer-
ence received, including interference that
may cause undesired operation.
NOTE:
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user
’s authority
to operate the equipment.
For Canada:
This device complies with RSS-210 of
Industry Canada. Operation is subject to
the following two conditions: (1) this
device may not cause interference, and
(2) this device must accept any interfer-
ence, including interference that may
cause undesired operation of the device.
Maintenance and do-it-yourself
8-27
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8-28
Maintenance and do-it-yourself
JVM0099X
SEDAN
1.
Front turn signal light and clearance
light
2.
Headlight (high- and low-beam)
3.
Front side marker light
4.
Map light
5.
Rear personal light
6.
Fog light
7.
Step light
8.
Trunk light
9.
High-mounted stop light
10. License plate light
11. Back-up light
12. Rear combination light (rear turn
signal/tail/stop/side marker light)
LIGHTS
-------------------------------------------------------------------------------------------------------------------------------------------------------------
SDI2702
COUPE
1.
Clearance light
2.
Headlight (high- and low-beam)
3.
Front turn signal light
4.
Map light
5.
Fog light
6.
Front side marker light
7.
Step light
8.
High-mounted stop light (on the rear
parcel shelf or in the rear spoiler)*
9.
Trunk light
10. License plate light
11. Back-up light
12. Rear combination light (rear turn
signal/tail/stop/side marker light)
*:
Note that when the factory spoiler is
installed, the rear parcel shelf high-
mounted stop light is still present, but
it is disabled and replaced by the rear
spoiler high-mounted stop light.
Maintenance and do-it-yourself
8-29
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8-30
Maintenance and do-it-yourself
HEADLIGHTS
Replacing
Xenon headlight bulb:
WARNING
HIGH VOLTAGE
When xenon headlights are on, they pro-
duce a high voltage. To prevent an electric
shock, never attempt to modify or disas-
semble. Always have your xenon headlights
replaced at an INFINITI retailer. For addi-
tional information, see
“Headlight and turn
signal switch
” (P.2-34).
Use the same number and wattage shown
in the following chart as originally in-
stalled.
If replacement is required, see an INFINITI
retailer.
Fog may temporarily form inside the lens of
the exterior lights in the rain or in a car
wash. A temperature difference between
the inside and the outside of the lens
causes the fog. This is not a malfunction. If
large drops of water collect inside the lens,
contact an INFINITI retailer.
EXTERIOR AND INTERIOR LIGHTS
Sedan
Item
Wattage (W)
Bulb No.
Headlight*
High/Low beams (xenon)
35
D2S
Front turn signal light*
28
7444NA
Front fog light*
35
H8
Clearance light*
8
7444NA
Front side marker light*
5
WY5W
Rear combination light*
back-up
16
W16W
turn signal
21
W21W
stop/tail/side marker
LED
—
License plate light*
5
W5W
Map light
8
—
Rear personal light
8
—
Vanity mirror light
2
—
Step light*
8
—
Trunk light*
3.4
—
High-mounted stop light*
LED
—
*:
See an INFINITI retailer for replacement.
NOTE: Always check with the Parts Department at an INFINITI retailer for the latest
information about parts.
-------------------------------------------------------------------------------------------------------------------------------------------------------------
Coupe
Item
Wattage (W)
Bulb No.
Headlight*
High/Low beams (xenon)
35
D2S
Front turn signal light*
21
WY21W
Front fog light*
55
H11
Clearance light*
5
W5W
Front side marker light*
5
W5W
Rear combination light*
back-up
16
W16W
turn signal
21
W21W
stop/tail/side marker
LED
—
License plate light*
5
W5W
Map light
8
—
Vanity mirror light
2
—
Step light*
8
—
Trunk light*
3.4
—
High-mounted stop light*
LED
—
*:
See an INFINITI retailer for replacement.
NOTE: Always check with the Parts Department at an INFINITI retailer for the latest
information about parts.
Replacement procedures
All other lights are either type A, B, C, D, E
or F. When replacing a bulb, first remove
the lens and/or cover.
Maintenance and do-it-yourself
8-31
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8-32
Maintenance and do-it-yourself
SDI1679
SDI2508
Map light
SDI2031
Rear personal light (Sedan only)
SDI2032
Vanity mirror light (Type A)
SDI1839
Vanity mirror light (Type B)
-------------------------------------------------------------------------------------------------------------------------------------------------------------
If you have a flat tire, see
“Flat tire” (P.6-
2).
TIRE PRESSURE
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 CHECK TIRE
PRESSURE warning appears on the dot
matrix liquid crystal display, one or more
of your tires is significantly under-inflated.
The TPMS will activate only when the
vehicle is driven at speeds above 16 MPH
(25 km/h). Also, this system may not
detect a sudden drop in tire pressure (for
example a flat tire while driving).
For more details, see
“Low tire pressure
warning light
” (P.2-15), “Tire Pressure
Monitoring System (TPMS)
” (P.5-4) and
“Tire Pressure Monitoring System (TPMS)”
(P.6-2).
Tire inflation pressure
Check the pressure of the tires
(including the spare) often and al-
ways prior to long distance trips. The
recommended tire pressure specifi-
cations are shown on the Tire and
Loading Information label under the
“Cold Tire Pressure” heading. The
Tire and Loading Information label is
affixed to the driver side center pillar.
Tire pressures should be checked
regularly because:
.
Most tires naturally lose air over
time.
.
Tires can lose air suddenly when
driven over potholes or other
objects or if the vehicle strikes a
curb while parking.
The tire pressures should be checked
when the tires are cold. The tires are
considered COLD after the vehicle
has been parked for 3 or more hours,
or driven less than 1 mile (1.6 km) at
moderate speeds.
Incorrect tire pressure, including
under inflation, may adversely affect
tire life and vehicle handling.
WARNING
.
Improperly inflated tires can fail
suddenly and cause an accident.
.
The Gross Vehicle Weight rating
(GVWR) is located on the F.M.V.S.
S./C.M.V.S.S. label. The vehicle
weight capacity is indicated on
the Tire and Loading Information
label. Do not load your vehicle
beyond this capacity. Overloading
your vehicle may result in reduced
tire life, unsafe operating condi-
tions due to premature tire failure,
or unfavorable handling character-
istics and could also lead to a
serious accident. Loading beyond
the specified capacity may also
result in failure of other vehicle
components.
.
Before taking a long trip, or
whenever you heavily load your
vehicle, use a tire pressure gauge
to ensure that the tire pressures
Maintenance and do-it-yourself
8-33
WHEELS AND TIRES
-------------------------------------------------------------------------------------------------------------------------------------------------------------
8-34
Maintenance and do-it-yourself
are at the specified level.
.
For additional information regard-
ing tires, refer to
“Important Tire
Safety Information
” (US) or “Tire
Safety Information
” (Canada) in
the Warranty Information Booklet.
SDI2703
Tire and Loading Information label
*
1 Seating capacity: The maximum
number of occupants that can be
seated in the vehicle.
*
2 Vehicle load limit: See
“Vehicle
loading information
” (P.9-20).
*
3 Original size: The size of the tires
originally installed on the vehicle
at the factory.
*
4 Cold tire pressure: Inflate the
tires to this pressure when the
tires are cold. Tires are consid-
-------------------------------------------------------------------------------------------------------------------------------------------------------------
ered COLD after the vehicle has
been parked for 3 or more hours,
or driven less than 1 mile (1.6
km) at moderate speeds. The
recommended cold tire inflation
is set by the manufacturer to
provide the best balance of tire
wear, vehicle handling, driveabil-
ity, tire noise, etc., up to the
vehicle
’s GVWR.
*
5 Tire size
— see “Tire labeling”
(P.8-36).
*
6 Spare tire size or compact spare
tire size (if so equipped)
SDI1949
Checking the tire pressure
1. Remove the valve stem cap from
the tire.
2. P r e s s
t h e
p r e s s u r e
g a u g e
squarely onto the valve stem. Do
not press too hard or force the
valve stem sideways, or air will
escape. If the hissing sound of air
escaping from the tire is heard
while checking the pressure, re-
position the gauge to eliminate
this leakage.
3. Remove the gauge.
4. Read the tire pressure on the
gauge stem and compare it to
the specification shown on the
Tire and Loading Information la-
bel.
5. Add air to the tire as needed. If
too much air is added, press the
core of the valve stem briefly with
the tip of the gauge stem to
release pressure. Recheck the
pressure and add or release air
as needed.
6. Install the valve stem cap.
7. Check the pressure of all other
tires, including the spare.
Maintenance and do-it-yourself
8-35
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