2012 SUZUKI GRAND VITARA Section 7

7-17INSPECTION AND MAINTENANCE
79K21-03E
65D434
You should inspect spark plugs periodically
for carbon deposits. When carbon accu-
mulates on a spark plug, a strong spark
may not be produced. Remove carbon
deposits with a wire or pin and adjust the
spark plug gap.
To access the spark plugs:
1) Remove the engine cover.
2) Disconnect the coupler (1) while push-
ing the release lever.
3) Remove the bolt.
4) Pull the ignition coil out.
80G093
Gear OilSpecified Gear OilWhen replacing gear oil, use gear oil with
the appropriate viscosity and grade as
shown in the charts below. We highly rec-
ommend you use SAE 75W-90 gear oil
(SAE 80W-90 for front differential oil, rear
differential oil and transfer gear oil).
Transmission/Extension case
54G095
Differential/Transfer case
65D594
CAUTION
When replacing spark plugs, you
should use the brand and type speci-
fied for your vehicle. For the speci-
fied plugs, refer to the
“SPECIFICATIONS” section at the
end of this book. If you wish to use a
brand of spark plug other than the
specified plugs, consult your SUZUKI
dealer.1.0 – 1.1 mm
(0.039 – 0.043 in.)
Engine Coolant: 1, 2
Windshield Washer Fluid: 3

7-25INSPECTION AND MAINTENANCE
79K21-03E
TiresFor safe operation of your vehicle, it is
important that the tires be the correct
type and size, in good condition, and
properly inflated. Be sure to follow the
requirements and recommendations in
this section.Tire Sidewall LabelingUseful information about a tire is
molded into its sidewall. The example
below shows a typical passenger car
tire.
Typical Passenger Car Tire Sidewall
67D027
A. Tire Manufacturer
The name of the tire manufacturer
is shown here.B. Tire Name/Model
The tire name or model is shown
here.
C. Tire Size
The tire size code is a combina-
tion of letters and numbers used
to define a particular tire’s width,
height, aspect ratio, construction
type, and service description. See
the “Tire Size” explanation later in
this section for more details.
D. U.S. DOT Tire Identification Num-
ber
The Department of Transportation
(DOT) marking indicates that the
tire is in compliance with the U.S.
Department of Transportation
Motor Vehicle Safety Standards.
The letters and numbers following
the DOT marking is the Tire Iden-
tification Number (TIN). The TIN
identifies the tire manufacturer
and plant, tire size, and date the
tire was manufactured.
E. Uniform Tire Quality Grading
(UTQG)
Tire manufacturers are required to
grade tires based on three perfor-
mance factors: treadwear, traction
and temperature resistance.
Refer to the “Uniform Tire Quality
Grading” section for more details.F. Load Rating
Load rating is the maximum
weight a tire is designed to sup-
port in normal service.
G. Max Inflation Pressure
Max inflation pressure is the max-
imum inflation pressure a tire is
designed for.
H. Tire Ply Material
These tire markings describe the
type of cord and number of plies
in the sidewall and under the
tread.
I. Load Index and Speed Rating
The two- or three-digit number is
the tire’s load index, the maximum
load a tire can carry at the speed
indicated by its speed symbol at
the maximum inflation pressure.
The higher the number is, the
greater the load carrying capacity.
The letter symbol denotes the
speed at which a tire is designed
to be driven for extended periods
of time. (Ratings are listed below.)
AH B
G
E
FD
J I
C
EXAMPLE
Tires: 6

7-26
INSPECTION AND MAINTENANCE
79K21-03E
*The letters ZR may be used on tires
with a maximum speed capability over
149 mph and will always be used on
tires with a maximum speed capability
over 186 mph.
J. M+S Marking
This marking indicates the tire
has some mud and snow capabili-
ties and is designed for all-season
use.
Tire SizeThe following illustration shows an
example of a typical passenger car tire
size.
67D028
A. Tire Type
This letter code indicates the pri-
mary intended use of the tire. The
letter “P” identifies a tire primarily
intended for use on a passenger
vehicle.
B. Tire Width
This three-digit number indicates
the tire section width in millime-
ters from sidewall to sidewall.
C. Aspect Ratio
This two-digit number represents
the tire section height divided by
the tire section width.D. Construction Code
This letter code is used to indicate
the type of ply construction in the
tire. The letter “R” means radial
ply tire construction, the letter “D”
means diagonal or bias ply con-
struction, and the letter “B” means
belted-bias ply construction.
E. Rim Diameter
This two-digit number is the wheel
or rim diameter in inches. Letter Rating Speed Rating
Q99 mph
R 106 mph
S 112 mph
T 118 mph
U 124 mph
H 130 mph
V 149 mph
W 168 mph*
Y 186 mph*
A
B
C
D
E
EXAMPLE
WARNING
Your SUZUKI is equipped with
tires which are all the same type
and size. This is important to
ensure proper steering and han-
dling of the vehicle. Never mix
tires of different size or type on
the four wheels of your vehicle.
Mixing tires could cause you to
lose control while driving which
may lead to an accident. The size
and type of tires used should be
only those approved by SUZUKI
Motor Corporation as standard or
optional equipment for your vehi-
cle.
Tires: 6

7-28
INSPECTION AND MAINTENANCE
79K21-03E
tire gauge until you reach the cor-
rect pressure.
5) If the air pressure is too low, fill the
tire with air at a service station until
it reaches the recommended pres-
sure.
6) Make sure all tires have the same
air pressure (unless the owner’s
manual indicates otherwise).
Tire InspectionInspect your vehicle’s tires at least
once a month by performing the fol-
lowing checks:
1) Measure the air pressure with a tire
gauge. Adjust the pressure if nec-
essary. Remember to check the
spare tire, too. Refer to the “Mea-
suring Air Pressure” section.
54G136
(1) Tread wear indicator
(2) Indicator location mark
2) Check that the depth of the tread
groove is more than 1.6 mm (0.06
in.). To help you check this, the tires
have molded-in tread wear indica-
tors in the grooves. When the indi-
cators appear on the tread surface,
the remaining depth of the tread is
WARNING
 Air pressures should be
checked when the tires are cold
or you may get inaccurate read-
ings.
 Check the inflation pressure
from time to time while inflating
the tire gradually, until the spec-
ified pressure is obtained.
(Continued)
WARNING
(Continued) Never underinflate or overin-
flate the tires.
Underinflation can cause
unusual handling characteris-
tics or can cause the rim to slip
on the tire bead, resulting in an
accident or damage to the tire
or rim.
Underinflation can also cause
tires to overheat, leading to tire
failure.
Overinflation can cause the tire
to burst, resulting in personal
injury.
Overinflation can also cause
unusual handling characteris-
tics which may result in an acci-
dent.
Tires: 6

7-29INSPECTION AND MAINTENANCE
79K21-03E
1.6 mm (0.06 in.) or less and the
tire should be replaced.
3) Check for abnormal wear, cracks
and damage. Any tires with cracks
or other damage should be
replaced. If any tires show abnor-
mal wear, have them inspected by
your SUZUKI dealer.
4) Check for loose wheel nuts.
5) Check that there are no nails,
stones or other objects sticking into
the tires.
WARNING
Hitting curbs and running over
rocks can damage tires and affect
wheel alignment. Be sure to have
tires and wheel alignment
checked periodically by your
SUZUKI dealer.
WARNING
Your SUZUKI is equipped with
tires which are all the same type
and size. This is important to
ensure proper steering and han-
dling of the vehicle. Never mix
tires of different size or type on
the four wheels of your vehicle.
The size and type of tires used
should be only those approved by
SUZUKI Motor Corporation as
standard or optional equipment
for your vehicle.
WARNING
Replacing the wheels and tires
equipped on your vehicle with
certain combinations of aftermar-
ket wheels and tires can signifi-
cantly change the steering and
handling characteristics of your
vehicle. Oversized tires may also
rub against the fender over
bumps, causing vehicle damage
or tire failure. Therefore, use only
those wheel and tire combina-
tions approved by SUZUKI Motor
Corporation as standard or
optional equipment for your vehi-
cle. For information regarding the
specified tires, refer to the Tire
Information Label located on the
driver’s side door pillar or the
“SPECIFICATIONS” section.
CAUTION
Replacing the original tires with
tires of a different size may result
in false speedometer or odometer
readings. Check with your
SUZUKI dealer before purchas-
ing replacement tires that differ in
size from the original tires.
Tires: 6

7-30
INSPECTION AND MAINTENANCE
79K21-03E Uniform Tire Quality Grading
The U.S. National Highway Traffic
Safety Administration has developed a
grading system for evaluating the per-
formance of passenger car tires. The
following information will help you
understand the grading system, which
applies to vehicles sold in the U.S.
Consult your SUZUKI dealer or tire
retailer for help in choosing the correct
replacement tires for your vehicle.
Quality grades can be found where
applicable on the tire sidewall between
tread shoulder and maximum section
width. For example:
Treadwear 200 Traction AA Tempera-
ture ADOT Quality Grades
Treadwear
Traction AA A B C
Temperature A B CAll Passenger Car Tires Must Conform
To Federal Safety Requirements in
Addition To These Grades
Treadwear
The treadwear grade is a comparative
rating based on the wear rate of the
tire when tested under controlled con-
ditions on a specified government testcourse. For example, a tire graded 150
would wear one and one-half (1 1/2)
times as well on the government
course as a tire graded 100. The rela-
tive performance of tires depends
upon the actual conditions of their use,
however and may depart significantly
from the norm due to variations in driv-
ing habits, service practices and differ-
ences in road characteristics and
climate.
Traction – AA, A, B, C
The traction grades, from highest to
lowest, are AA, A, B and C. Those
grades represent the tire’s ability to
stop on wet pavement as measured
under controlled conditions on speci-
fied government test surfaces of
asphalt and concrete. A tire marked C
may have poor traction performance.Temperature – A, B, C
The temperature grades are A (the
highest), B and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled condi-
tions on a specified indoor laboratory
test wheel. Sustained high tempera-
ture can cause the material of the tire
to degenerate and reduce tire life, and
excessive temperature can lead to
sudden tire failure. The grade C corre-
sponds to a level of performance
which all passenger car tires must
meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B
and A represent higher levels of per-
formance on the laboratory test wheel
than the minimum required by law.
WARNING
The traction grade assigned to
this tire is based on straight-
ahead braking traction tests, and
does not include acceleration,
cornering, hydroplaning or peak
traction characteristics.
WARNING
The temperature grade for this
tire is established for a tire that is
properly inflated and not over-
loaded. Excessive speed, under-
inflation or excessive loading,
either separately or in combina-
tion, can cause heat buildup and
possible tire failure.
Tires: 6

7-36
INSPECTION AND MAINTENANCE
79K21-03E
Battery
60A269
Your vehicle is equipped with a battery that
requires infrequent maintenance. You will
never have to add water. You should, how-
ever, periodically check the battery, battery
terminals and battery hold-down bracket
for corrosion. Remove corrosion using a
stiff brush and ammonia mixed with water,
or baking soda mixed with water. After
removing corrosion, rinse with clean water.
The test indicator on the top of the battery
provides information on the condition of
the battery.
If your vehicle is not going to be driven for
a month or longer, disconnect the cable
from the negative terminal of the battery to
help prevent discharge.
FusesYour vehicle has three types of fuses, as
described below:
Main Fuse – The main fuse takes current
directly from the battery.
Primary Fuses – These fuses are between
the main fuse and individual fuses, and are
for electrical load groups.
Individual Fuses – These fuses are for indi-
vidual electrical circuits.
For details on protected circuits, refer to
the “FUSES AND PROTECTED CIR-
CUITS” section in this manual.
WARNING
Batteries produce flammable hydro-
gen gas. Keep flames and sparks
away from the battery or an explosion
may occur. Never smoke when work-
ing near the battery.
WARNING
When checking or servicing the bat-
tery, disconnect the negative cable.
Be careful not to cause a short circuit
by allowing metal objects to contact
the battery posts and the vehicle at
the same time.EXAMPLE
WARNING
To avoid harm to yourself or damage
to your vehicle or battery, follow the
jump starting instructions in the
“EMERGENCY SERVICE” section of
this manual if it is necessary to jump
start your vehicle.
WARNING
Battery posts, terminals and related
accessories contain lead and lead
compounds. Wash hands after han-
dling.
Bulb Replacement: 7

8-1EMERGENCY SERVICE
79K21-03E
Tire Changing Tool
64J124
The jack, wheel brace and jack handle are
stowed in the rear left corner of the lug-
gage compartment. Remove the cover to
access the tools.
To remove the jack, turn its shaft counter-
clockwise and pull the jack out of the stor-
age bracket. To stow the jack, place it in
the storage bracket and turn the shaft
clockwise until the jack is securely held in
place.
Spare Tire Nut Lock
(if equipped)
64J172
A nut lock is used for the spare tire. To
unlock the spare tire nut, insert the ignition
key into the lock as far as the key will go
and remove the lock with the key in. To lock
the spare tire nut, put the lock on the nut
and push the lock in.
WARNING
The tire changing tools should be
used only to change wheels. It is
important to read the jacking instruc-
tions in this section before attempt-
ing to use the jack.
WARNING
After using the tire changing tools,
be sure to stow them securely, or
they could be thrown about in an
accident, causing injury.
To LOCK To UNLOCK
Jacking Instructions: 5