2007 SUZUKI AERIO maintenance

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54G27-03E
Spark Plugs
65D180
You should inspect spark plugs periodi-
cally for carbon deposits. When carbon
accumulates on a spark plug, a strong
spark may not be produced. Remove car-
bon deposits with a wire or pin and adjust
the spark plug gap.
To access the spark plugs,
1) disconnect the coupler while pushing
the release lever,
2) remove the bolt, and
3) pull the ignition coil out.
80G093
EXAMPLE
CAUTION
 When servicing the iridium/plati-
num spark plugs (slender center
electrode type plugs), do not touch
the center electrode, as it is easy to
damage.
 When installing the spark plugs,
screw them in with your fingers to
avoid stripping the threads.
Tighten with a torque wrench to 25
Nm (2.5 kg-m, 18.0 lb-ft). Do not
allow contaminants to enter the
engine through the spark plug
holes when the plugs are removed.
 Never use spark plugs with the
wrong thread size.
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.)
Clutch Pedal: 6
Tires: 6

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54G27-03E
BrakesBrake Fluid
52D033
Check the brake fluid level by looking at
the reservoir in the engine compartment.
Check that the fluid level is between the
“MAX” and “MIN” lines. If the brake fluid
level is near the “MIN” line, fill it up to the
“MAX” line with DOT3 brake fluid.
52D123
MAX
MIN
EXAMPLE
WARNING
Failure to follow the guidelines below
can result in personal injury or seri-
ous damage to the brake system.
 If the brake fluid in the reservoir
drops below a certain level, the
brake warning light on the instru-
ment panel will come on (the
engine must be running with the
parking brake fully disengaged.)
Should the light come on, immedi-
ately ask your SUZUKI dealer to
inspect the brake system.
 A rapid fluid loss indicates a leak in
the brake system which should be
inspected by your SUZUKI dealer
immediately.
 Brake fluid can harm your eyes and
damage painted surfaces. Use cau-
tion when refilling the reservoir.
(Continued)
or
WARNING
(Continued)
 Do not use any fluid other than
DOT3 brake fluid. Do not use
reclaimed fluid or fluid that has
been stored in old or open contain-
ers. It is essential that foreign parti-
cles and other liquids are kept out
of the brake fluid reservoir.
WARNING
Brake fluid is harmful or fatal if swal-
lowed, and harmful if it comes in con-
tact with skin or eyes. If swallowed,
do not induce vomiting. Immediately
contact a poison control center or a
physician. If brake fluid gets in eyes,
flush eyes with water and seek medi-
cal attention. Wash thoroughly after
handling. Solution can be poisonous
to animals. Keep out of the reach of
children and animals.
CAUTION
The brake fluid should be replaced
according to the maintenance sched-
ule. Have the brake fluid replaced by
your SUZUKI dealer.
Tires: 6

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54G27-03E
NOTE:
With disc brakes, the fluid level can be
expected to gradually fall as the brake
pads wear.Brake Pedal
65D345
With the engine running and the parking
brake set, measure the distance between
the brake pedal and floor wall when the
pedal is depressed with approximately 300
N (66 lbs, 30 kg) of force. The minimum
distance required is as specified. Since
your vehicle’s brake system is self-adjust-
ing, there is no need for pedal adjustment.
If the pedal to floor wall distance as mea-
sured above is less than the minimum dis-tance required, have your vehicle
inspected by your SUZUKI dealer.
60G104
NOTE:
When measuring the distance between the
brake pedal and floor wall, push in the floor
carpet as far as it goes and measure the
distance between the carpet surface and
the brake pedal.
Pedal to wall minimum distance “a”
110 mm (4.3 in.)
“a”
Floor wall
WARNING
If you experience any of the following
problems with your vehicle’s brake
system, have the vehicle inspected
immediately by your SUZUKI dealer.
 Poor braking performance
 Uneven braking (Brakes not work-
ing uniformly on all wheels.)
 Excessive pedal travel
 Brake dragging
 Excessive noise
 (Except ABS equipped vehicle)
Pedal pulsation (Pedal pulsates
when pressed for braking.)
Tires: 6

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54G27-03E
Parking Brake Lever
60A226
Check the parking brake for proper adjust-
ment by counting the number of clicks
made by the ratchet teeth as you slowly
pull up on the parking brake lever to the
point of full engagement. The parking
brake lever should stop between the speci-
fied ratchet teeth and the rear wheels
should be securely locked. If the parking
brake is not properly adjusted or the
brakes drag after the lever has been fully
released, have the parking brake
inspected and/or adjusted by your SUZUKI
dealer.
Steering Wheel
65D187
Check the play of the steering wheel by
gently turning it from left to right and mea-
suring the distance that it moves before
you feel slight resistance. The play should
be between the specified values. Check
that the steering wheel turns easily and
smoothly without rattling by turning it all
the way to the right and to the left while
driving very slowly in an open area. If the
amount of free play is outside the specifi-
cation or you find anything else to be
wrong, an inspection must be performed
by your SUZUKI dealer.
Power Steering (if equipped)
54G225
(1) UPPER
(2) LOWER
Check the steering box case, vane pump
and hose connections for leaks or dam-
age.Power Steering FluidCheck the fluid level by looking at the res-
ervoir in the engine compartment when the
fluid is cold (about room temperature).
Check that the fluid level is between the
“UPPER” and “LOWER” lines. If the fluid
level is near the “LOWER” line, fill it up to
the “UPPER” line with an automatic tran-
saxle fluid equivalent to ATF DEXRON
®-II
(Esso JWS 2326) or DEXRON
®-III. Do not
overfill. Ratchet tooth specification “b”
6th – 8th
200 N (44 lbs, 20 kg)
“b”
Steering wheel play “c”
0 – 30 mm (0.0 – 1.2 in.)
“c”
EXAMPLE
Tires: 6

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54G27-03E
Clutch Pedal
60B318
Check the clutch pedal for smooth opera-
tion and clutch fluid level from time to time.
If clutch dragging is felt with the pedal fully
depressed, have the clutch inspected by
your SUZUKI dealer. If the clutch fluid level
is near the “MIN” line, fill it up to the “MAX”
line with DOT3 brake fluid.
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 combination of
letters and numbers used to define a
particular tire’s width, height, aspect
ratio, construction type, and service
description. See the “Tire Size” expla-
nation later in this section for more
details.
D. U.S. DOT Tire Identification Number
The Department of Transportation
(DOT) marking indicates that the tire
is in compliance with the U.S. Depart-
ment of Transportation Motor Vehicle
Safety Standards. The letters and
numbers following the DOT marking
is the Tire Identification Number
(TIN). The TIN identifies the tire man-
ufacturer 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 support in normal
service.
G. Max Inflation Pressure
Max inflation pressure is the maxi-
mum inflation pressure a tire is
designed for.
H. Tire Ply Material
These tire markings describe the type
AH B
G
E
FD
J I
C
Tires: 6

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54G27-03E
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 carry-
ing 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.)
*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 capabilities and
is designed for all-season use.
Tire SizeThe following illustration shows an exam-
ple of a typical passenger car tire size.
67D028
A. Tire Type
This letter code indicates the primary
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 millimeters 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 con-
struction, the letter “D” means diago-
nal or bias ply construction, and the
letter “B” means belted-bias ply con-
struction.
E. Rim Diameter
This two-digit number is the wheel or
rim diameter in inches.
Tire Inflation PressureTire inflation pressure should be checked
when the tire is cold. “Cold tire inflation
pressure” is the pressure in a tire that has
been driven less than 1 mile (1.6 km) or
has been standing for three hours or more. Letter Rating Speed Rating
Q 99 mph
R106 mph
S112 mph
T118 mph
U124 mph
H130 mph
V149 mph
W 168 mph*
Y 186 mph*
A
B
C
D
E
WARNING
Your SUZUKI is equipped with tires
which are all the same type and size.
This is important to ensure proper
steering and handling of the vehicle.
Never mix tires of different size or
type on the four wheels of your vehi-
cle. 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 Corpora-
tion as standard or optional equip-
ment for your vehicle.
Tires: 6

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54G27-03E
54G307
The front and rear tire pressure specifica-
tions for your vehicle are shown below and
are listed on the Tire and Loading Informa-
tion Label, which is located on the driver’s
door lock pillar. The Tire and Loading
Information Label contains the following
information:
 Seating Capacity
 Maximum Allowed Combined Weight of
Occupants and Cargo
 Original Tire Size
 Recommended Cold Tire Inflation Pres-
sure of Original Tires
 Size of Compact Spare Tire
 Recommended Cold Tire Inflation Pres-
sure of Compact Spare TireMeasuring Air Pressure
Use the following steps to achieve proper
tire inflation:
1) Identify the recommended tire pressure
on the vehicle’s Tire and Loading Infor-
mation Label or in the owner’s manual.
2) Remove the valve cap from the tire
valve stem.
3) Using a reliable pressure gauge, mea-
sure the tire inflation pressure by press-
ing the tire gauge firmly onto the valve
to get a pressure measurement.
Remember that inflation pressures
should be checked when the tires are
“cold”, meaning before they have been
driven one mile or after sitting for three
hours or more allowing the tire to cool
to ambient air temperature.
4) If the air pressure is too high, slowly
release the air by pressing on the tire
valve stem with the edge of the tire
gauge until you reach the correct pres-
sure.5) If the air pressure is too low, fill the tire
with air at a service station until it
reaches the recommended pressure.
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 following checks:
1) Measure the air pressure with a tire
gauge. Adjust the pressure if neces-
Recommended Cold Tire Inflation
Pressures
Front Tires210 kPa
30 psi
Rear Tires210 kPa
30 psi
Compact Spare Tire420 kPa
60 psi
WARNING
 Air pressures should be checked
when the tires are cold or you may
get inaccurate readings.
 Check the inflation pressure from
time to time while inflating the tire
gradually, until the specified pres-
sure is obtained.
 Never underinflate or overinflate
the tires.
Underinflation can cause unusual
handling characteristics 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 characteristics
which may result in an accident.
Tires: 6

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54G27-03E
sary. Remember to check the spare
tire, too. Refer to the “Measuring 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 indicators in the
grooves. When the indicators appear
on the tread surface, the remaining
depth of the tread is 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 abnormal 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 periodi-
cally 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 handling of the vehicle.
Never mix tires of different size or
type on the four wheels of your vehi-
cle. The size and type of tires used
should be only those approved by
SUZUKI Motor Corporation as stan-
dard or optional equipment for your
vehicle.
CAUTION
For All-wheel drive (AWD) models,
replacing a tire with one of a different
size, or using different brands among
the four tires can result in damage to
the drive train.
WARNING
Replacing the wheels and tires
equipped on your vehicle with certain
combinations of aftermarket wheels
and tires can significantly 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 combinations
approved by SUZUKI Motor Corpora-
tion as standard or optional equip-
ment for your vehicle. 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 purchasing replacement tires
that differ in size from the original
tires.
Tires: 6