maintenance INFINITI G37 2012 Workshop Manual

Black plate (438,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]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)

Black plate (439,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]GUID-9503AF79-9CA5-400E-9F06-81B6757D713C
If you have a flat tire, see “ Flat tire ” (P.6-
2).
TIRE PRESSURE GUID-059CBC2D-BB1C-4DE2-B26E-A89198E003F1
Tire Pressure Monitoring System
(TPMS) GUID-54149EBD-6C2B-4EEC-AE1A-FDADBBA021B3
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 GUID-FDC2587E-609D-4595-9387-574BE1BDEAC6
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
8-33WHEELS AND TIRES

Black plate (440,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]8-34 Maintenance and do-it-yourselfare 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 GUID-5F11D76D-958D-427C-91EF-04C50D9803D6
* 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-

Black plate (441,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]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 GUID-CC708595-2C70-4CAE-BDC3-D716681157B7
1.Remove the valve stem cap from
the tire.
2.Press the pressure gauge
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

Black plate (442,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]8-36 Maintenance and do-it-yourselfSedan: GUID-D73A39BF-43C8-459F-9C24-47B7F579C407
SIZE COLD TIRE
INFLATION
PRESSURE
FRONT
ORIGINAL
TIRE P225/55R17 95V 230 kPa,
33 PSI
P225/50R18 94V 230 kPa,
33 PSI
225/50R18 95W 230 kPa,
33 PSI
REAR ORI-
GINAL TIRE P225/55R17 95V 230 kPa,
33 PSI
P225/50R18 94V 230 kPa,
33 PSI
245/45R18 96W 230 kPa,
33 PSI
SPARE TIRE T145/80D17
107M 420 kPa,
60 PSI
T145/70R18
107M 420 kPa,
60 PSI Coupe: GUID-D73A39BF-43C8-459F-9C24-47B7F579C407
SIZE COLD TIRE
INFLATION
PRESSURE
FRONT
ORIGINAL
TIRE P225/50R18 94V 230 kPa,
33 PSI
P225/45R19 92V 240 kPa,
35 PSI
225/45R19 92W 240 kPa,
35 PSI
REAR ORI-
GINAL TIRE P225/50R18 94V 230 kPa,
33 PSI
P225/45R19 92V 240 kPa,
35 PSI
245/40R19 94W 240 kPa,
35 PSI
SPARE TIRE T145/80D17
107M 420 kPa,
60 PSI
T145/70R18
107M 420 kPa,
60 PSI SDI1575
Example
TIRE LABELING GUID-7CDDB6DE-92AD-4E32-995B-54060312AD14
Federal law requires tire manufac-
turers to place standardized informa-
tion on the sidewall of all tires. This
information identifies and describes
the fundamental characteristics of
the tire and also provides the tire
identification number (TIN) for safety
standard certification. The TIN can be
used to identify the tire in case of a
recall.

Black plate (443,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]SDI1606
Example
* 1
Tire size (example: P215/60R16
94H)
1. P: The “ P ” indicates the tire is
designed for passenger vehicles.
(Not all tires have this informa-
tion.)
2. Three-digit number (215): This
number gives the width in milli-
meters of the tire from sidewall
edge to sidewall edge.
3. Two-digit number (60): This num-
ber, known as the aspect ratio, gives the tire ’ s ratio of height to
width.
4.R: The “ R ” stands for radial.
5.Two-digit number (16): This num-
ber is the wheel or rim diameter in
inches.
6.Two- or three-digit number (94):
This number is the tire ’ s load
index. It is a measurement of
how much weight each tire can
support. You may not find this
information on all tires because it
is not required by law.
7.H: Tire speed rating. You should
not drive the vehicle faster than
the tire speed rating. SDI1607
Example
* 2
TIN (Tire Identification Number)
for a new tire (example: DOT XX
XX XXX XXXX)
1.DOT: Abbreviation for the “ Depart-
ment of Transportation ” . The sym-
bol can be placed above, below or
to the left or right of the Tire
Identification Number.
2.Two-digit code: Manufacturer ’ s
identification mark
3.Two-digit code: Tire size
Maintenance and do-it-yourself
8-37

Black plate (444,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]8-38 Maintenance and do-it-yourself4. Three-digit code: Tire type code
(Optional)
5. Three-digit code: Date of Manu-
facture
6. Four numbers represent the week
and year the tire was built. For
example, the numbers 3103
means the 31st week of 2003. If
these numbers are missing, then
look on the other sidewall of the
tire.
* 3
Tire ply composition and materi-
al
The number of layers or plies of
rubber-coated fabric in the tire.
Tire manufacturers also must
indicate the materials in the tire,
which include steel, nylon,
polyester, and others.
* 4
Maximum permissible inflation
pressure
This number is the greatest
amount of air pressure that
should be put in the tire. Do
not exceed the maximum per- missible inflation pressure.
* 5
Maximum load rating
This number indicates the max-
imum load in kilograms and
pounds that can be carried by
the tire. When replacing the tires
on the vehicle, always use a tire
that has the same load rating as
the factory installed tire.
* 6
Term of “ tubeless ” or “ tube
type ”
Indicates whether the tire re-
quires an inner tube ( “ tube
type ” ) or not ( “ tubeless ” ).
* 7
The word “ radial ”
The word “ radial ” is shown, if
the tire has radial structure.
* 8
Manufacturer or brand name
Manufacturer or brand name is
shown.
Other tire-related terminology:
In addition to the many terms that
are defined throughout this section,
Intended Outboard Sidewall is (1) the
sidewall that contains a whitewall, bears white lettering or bears manu-
facturer, brand and/or model name
molding that is higher or deeper than
the same molding on the other side-
wall of the tire, or (2) the outward
facing sidewall of an asymmetrical
tire that has a particular side that
must always face outward when
mounted on a vehicle.
TYPES OF TIRES GUID-42D58B1A-32E5-4966-9D89-2C4B16EEE249
WARNING . When changing or replacing tires, be
sure all four tires are of the same type
(Example: Summer, All Season or Snow)
and construction. An INFINITI retailer
may be able to help you with information
about tire type, size, speed rating and
availability.
. Replacement tires may have a lower
speed rating than the factory equipped
tires, and may not match the potential
maximum vehicle speed. Never exceed
the maximum speed rating of the tire.
. Replacing tires with those not originally

Black plate (445,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]specified by INFINITI could affect the
proper operation of the TPMS.
. For additional information regarding
tires, refer to “ Important Tire Safety
Information ” (US) or “ Tire Safety Infor-
mation ” (Canada) in the Warranty Infor-
mation Booklet.
All season tires GUID-87E8714D-2B3D-4DE3-B5B1-0FDB34C6A1BF
INFINITI specifies all season tires on some
models to provide good performance all
year, including snowy and icy road condi-
tions. All Season tires are identified by ALL
SEASON and/or M&S (Mud and Snow) on
the tire sidewall. Snow tires have better
snow traction than All Season tires and
may be more appropriate in some areas.
Summer tires GUID-560BBD79-0719-4B8B-AF1C-4D895DD18219
INFINITI specifies summer tires on some
models to provide superior performance on
dry roads. Summer tire performance is
substantially reduced in snow and ice.
Summer tires do not have the tire traction
rating M&S on the tire sidewall.
If you plan to operate your vehicle in snowy
or icy conditions, INFINITI recommends the
use of SNOW tires or ALL SEASON tires on all four wheels.
Snow tires GUID-1B1B74F7-B51D-4FB4-94BD-BD6E5230D2DC
If snow tires are needed, it is necessary to
select tires equivalent in size and load
rating to the original equipment tires. If
you do not, it can adversely affect the
safety and handling of your vehicle.
Generally, snow tires will have lower speed
ratings than factory equipped tires and
may not match the potential maximum
vehicle speed. Never exceed the maximum
speed rating of the tire.
If you install snow tires, they must be the
same size, brand, construction and tread
pattern on all four wheels.
For additional traction on icy roads,
studded tires may be used. However, some
U.S. states and Canadian provinces prohi-
bit their use. Check local, state and
provincial laws before installing studded
tires. Skid and traction capabilities of
studded snow tires, on wet or dry surfaces,
may be poorer than that of non-studded
snow tires. TIRE CHAINS GUID-F5ABB636-5D7F-4312-B53A-0F3C651BAF08
Use of tire chains may be prohibited
according to location. Check the local laws
before installing tire chains. When instal-
ling tire chains, make sure they are the
proper size for the tires on your vehicle and
are installed according to the chain man-
ufacturer ’ s suggestions. Use only SAE
Class S chains. Class “ S ” chains are used
on vehicles with restricted tire to vehicle
clearance. Vehicles that can use Class “ S ”
chains are designed to meet the SAE
standard minimum clearances between
the tire and the closest vehicle suspension
or body component required to accommo-
date the use of a winter traction device (tire
chains or cables). The minimum clearances
are determined using the factory equipped
tire size. Other types may damage your
vehicle. Use chain tensioners when recom-
mended by the tire chain manufacturer to
ensure a tight fit. Loose end links of the
tire chain must be secured or removed to
prevent the possibility of whipping action
damage to the fenders or underbody. If
possible, avoid fully loading your vehicle
when using tire chains. In addition, drive at
a reduced speed. Otherwise, your vehicle
may be damaged and/or vehicle handling
Maintenance and do-it-yourself
8-39

Black plate (446,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]8-40 Maintenance and do-it-yourselfand performance may be adversely af-
fected.
Tire chains must be installed only on the
rear wheels and not on the front wheels.
Never install tire chains on a TEMPORARY
USE ONLY spare tire.
Do not use tire chains on dry roads. Driving
with tire chains in such conditions can
cause damage to the various mechanisms
of the vehicle due to some overstress. SDI1662
CHANGING WHEELS AND TIRES GUID-2274D4EA-A493-4122-8F01-70F7A39EC40C
Tire rotation (Models equipped with
same size tires on all wheels) GUID-A3A28418-DE08-410B-A7FA-043A8A0FEFF1
INFINITI recommends rotating the
tires every 7,500 miles (12,000 km).
(See “ Flat tire ” (P.6-2) for tire repla-
cing procedures.)
As soon as possible, tighten the
wheel nuts to the specified torque
with a torque wrench.
Wheel nut tightening torque:
80 ft-lb (108 N·m) The wheel nuts must be kept tigh-
tened to the specification at all
times. It is recommended that wheel
nuts be tightened to the specifica-
tion at each tire rotation interval.
WARNING . After rotating the tires, check and
adjust the tire pressure.
. Retighten the wheel nuts when
the vehicle has been driven for
600 miles (1,000 km) (also in
cases of a flat tire, etc.).
. Do not include the T-type spare
tire or any other small size spare
tire in the tire rotation.
. For additional information regard-
ing tires, refer to “ Important Tire
Safety Information ” (US) or “ Tire
Safety Information ” (Canada) in
the Warranty Information Booklet.

Black plate (447,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]Tire rotation (Models equipped with
different size tires on front and
rear) GUID-42591FA5-788F-4ABA-B1AA-2564E2B3FCB6
Tires cannot be rotated on this
vehicle, as front tires are a different
size from rear tires.
A pin is on the front brake rotor to
prevent the rear wheels from being
installed in place of the front wheels.
The spare tire can be installed in
place of the front and rear wheels.
When installing the spare tire in the
front wheel, the hole in the spare tire
wheel must be aligned with the pin
on the brake rotor.
WARNING. Retighten the wheel nuts when
the vehicle has been driven for
600 miles (1,000 km) (also in
cases of a flat tire, etc.).
. For additional information regard-
ing tires, refer to “ Important Tire
Safety Information ” (US) or “ Tire Safety Information ” (Canada) in
the Warranty Information Booklet.
SDI1663
1.
Wear indicator 2.
Wear indicator location mark
Tire wear and damage GUID-973CEC61-209F-4E9E-A422-6F36DFD5AF83
WARNING . Tires should be periodically in-
spected for wear, cracking, bul-
ging or objects caught in the
tread. If excessive wear, cracks,
bulging or deep cuts are found,
the tire(s) should be replaced.
Maintenance and do-it-yourself
8-41