2015 Hyundai Sonata inflation pressure

2-57
Safety system of your vehicle
2
Upon deployment, tear seams mold-
ed directly into the pad covers will
separate under pressure from the
expansion of the air bags. Further
opening of the covers allows full
inflation of the air bags.
A fully inflated air bag, in combina-
tion with a properly worn seat belt,
slows the driver's or the front pas-
senger's forward motion, reducing
the risk of head and chest injury.After complete inflation, the air bag
immediately starts deflating, enabling
the driver to maintain forward visibili-
ty and the ability to steer or operate
other controls.To prevent objects from becom-
ing dangerous projectiles when
the passenger's air bag inflates:
•Do not install or place any
objects (drink holder, CD
holder, stickers, etc.) on the
front passenger's panel above
the glove box where the pas-
senger's air bag is located.
•Do not install a container of
liquid air freshener near the
instrument cluster or on the
instrument panel surface.
WARNING
OLMB033056/H
■Driver’s front air bag (3)
OLMB033057/H
■Passenger’s front air bagOLMB033055/H
■Driver’s front air bag (2)

7
Maintenance
7
Maintenance
Engine compartment .............................................7-3
Maintenance services ...........................................7-5
Owner's responsibility ......................................................7-5
Owner maintenance precautions ..................................7-5
Owner maintenance ...............................................7-6
Owner maintenance schedule ........................................7-7
Scheduled maintenance services.........................7-9
Normal maintenance schedule.....................................7-10
Maintenance under severe usage conditions ..........7-14
Explanation of scheduled maintenance items ..7-16
Engine oil ..............................................................7-20
Checking the engine oil level ....................................7-20
Checking the engine oil and filter ..............................7-21
Engine coolant......................................................7-22
Checking the coolant level ...........................................7-22
Changing the coolant .....................................................7-24
Brake fluid ...........................................................7-25
Checking the brake fluid level .....................................7-25
Washer fluid .........................................................7-27
Checking the washer fluid level ...............................7-27
Parking brake .......................................................7-27
Checking the parking brake .........................................7-27
Air cleaner ............................................................7-28
Filter replacement ...........................................................7-28
Climate control air filter .....................................7-30
Filter inspection ...............................................................7-30
Filter replacement ...........................................................7-30
Wiper blades .........................................................7-31
Blade inspection ..............................................................7-31
Blade replacement ..........................................................7-31
Battery...................................................................7-33
For best battery service................................................7-33
Battery capacity label ...................................................7-34
Battery recharging .......................................................7-35
Reset items .......................................................................7-36
Tyres and wheels .................................................7-37
Tyre care ...........................................................................7-37
Recommended cold tyre inflation pressures ...........7-37
Checking tyre inflation pressure.................................7-39
Tyre rotation ...................................................................7-40
Wheel alignment and tyre balance.............................7-41
Tyre replacement ............................................................7-41
Wheel replacement ........................................................7-43
Tyre traction .....................................................................7-43
Tyre maintenance ..........................................................7-43
Tyre sidewall labelling ....................................................7-43
Low aspect ratio tyre.....................................................7-48
Fuses ......................................................................7-49
Fuse/Relay panel description ......................................7-55
7

7-7
7
Maintenance
Owner maintenance schedule
When you stop for fuel:
• Check the engine oil level.
• Check coolant level in the engine
coolant reservoir.
• Check the windscreen washer fluid
level.
• Check for low or under-inflated
tyres.
Whilst operating your vehicle:
• Note any changes in the sound of
the exhaust or any smell of exhaust
fumes in the vehicle.
• Check for vibrations in the steering
wheel. Notice if there is any
increased steering effort or loose-
ness in the steering wheel, or
change in its straight-ahead position.
• Notice if your vehicle constantly
turns slightly or “pulls” to one side
when travelling on smooth, level
road.
• When stopping, listen and check for
unusual sounds, pulling to one side,
increased brake pedal travel or
“hard-to-push” brake pedal.
• If any slipping or changes in the
operation of your transaxle occurs,
check the transaxle fluid level.
• Check the automatic transaxle
P (Park) function.
• Check the parking brake.
• Check for fluid leaks under your vehi-
cle (water dripping from the air con-
ditioning system during or after use
is normal).
At least monthly:
• Check coolant level in the engine
coolant reservoir.
• Check the operation of all exterior
lights, including the stoplights, turn
signals and hazard warning flashers.
• Check the inflation pressures of all
tyres including the spare for tyres
that are worn, show uneven wear,
or are damaged.
• Check for loose wheel nuts.
Be careful when checking your
engine coolant level when the
engine is hot. This may result in
coolant being blown out of the
opening and cause serious
burns and other injuries.
WARNING

7-37
7
Maintenance
TYRES AND WHEELS
Tyre care
For proper maintenance, safety, and
maximum fuel economy, you must
always maintain recommended tyre
inflation pressures and stay within
the load limits and weight distribution
recommended for your vehicle.
Recommended cold tyre infla-
tion pressures
All tyre pressures (including the
spare) should be checked when the
tyres are cold. “Cold Tyres” means the
vehicle has not been driven for at
least 3 hours or driven less than 1.6
km.
Recommended pressures must be
maintained for the best ride, top vehi-
cle handling, and minimum tyre wear.
For recommended inflation pressure
refer to “Tyre and wheels” in section
8.All specifications (sizes and pres-
sures) can be found on a label
attached to the vehicle.Tyre underinflation
Severe underinflation (70 kPa
(10 psi) or more) can lead to
severe heat build-up, causing
blowouts, tread separation and
other tyre failures that can
result in the loss of vehicle con-
trol leading to severe injury or
death. This risk is much higher
on hot days and when driving
for long periods at high speeds.
WARNING
OLF084007R

7-38
Maintenance
•Underinflation also results in
excessive wear, poor handling
and reduced fuel economy.
Wheel deformation also is
possible. Keep your tyre pres-
sures at the proper levels. If a
tyre frequently needs refilling,
we recommend that the sys-
tem be checked by an autho-
rised HYUNDAI dealer.
•Overinflation produces a
harsh ride, excessive wear at
the centre of the tyre tread,
and a greater possibility of
damage from road hazards.
CAUTION
•Warm tyres normally exceed
recommended cold tyre pres-
sures by 28 to 41 kPa (4 to 6
psi). Do not release air from
warm tyres to adjust the pres-
sure or the tyres will be
underinflated.
•Be sure to reinstall the tyre
inflation valve caps. Without
the valve cap, dirt or moisture
could get into the valve core
and cause air leakage. If a
valve cap is missing, install a
new one as soon as possible.
CAUTION
Tyre pressure
Always observe the following:
•Check tyre pressure when the
tyres are cold. (After vehicle
has been parked for at least
3 hours or hasn't been driven
more than 1.6 km since start-
up.)
•Check the pressure of your
spare tyre each time you
check the pressure of other
tyres.
•Never overload your vehicle.
Be careful not to overload a
vehicle luggage rack if your
vehicle is equipped with one.
•Worn, old tyres can cause
accidents. If your tread is
badly worn, or if your tyres
have been damaged, replace
them.
CAUTION
Tyre inflation
Overinflation or underinflation
can reduce tyre life, adversely
affect vehicle handling, and
lead to sudden tyre failure. This
could result in loss of vehicle
control and potential injury.
WARNING

7-39
7
Maintenance
Checking tyre inflation pres-
sure
Check your tyres once a month or
more.
Also, check the tyre pressure of the
spare tyre.
How to check
Use a good quality gauge to check
tyre pressure. You can not tell if your
tyres are properly inflated simply by
looking at them. Radial tyres may
look properly inflated even when
they're underinflated.
Check the tyre's inflation pressure
when the tyres are cold. - "Cold"
means your vehicle has been sitting
for at least three hours or driven no
more than 1.6 km.Remove the valve cap from the tyre
valve stem. Press the tyre gauge
firmly onto the valve to get a pres-
sure measurement. If the cold tyre
inflation pressure matches the rec-
ommended pressure on the tyre and
loading information label, no further
adjustment is necessary. If the pres-
sure is low, add air until you reach
the recommended amount.
If you overfill the tyre, release air by
pushing on the metal stem in the
centre of the tyre valve. Recheck the
tyre pressure with the tyre gauge. Be
sure to put the valve caps back on
the valve stems. They help prevent
leaks by keeping out dirt and mois-
ture.
•Inspect your tyres frequently
for proper inflation as well as
wear and damage. Always use
a tyre pressure gauge.
•Tyres with too much or too lit-
tle pressure wear unevenly
causing poor handling, loss of
vehicle control, and sudden
tyre failure leading to acci-
dents, injuries, and even death.
The recommended cold tyre
pressure for your vehicle can
be found in this manual and on
the tyre label located on the
driver's side centre pillar.
•Worn tyres can cause acci-
dents. Replace tyres that are
worn, show uneven wear, or
are damaged.
•Remember to check the pres-
sure of your spare tyre.
HYUNDAI recommends that
you check the spare every
time you check the pressure
of the other tyres on your
vehicle.
WARNING

7-46
Maintenance
4. Tyre ply composition and
material
The number of layers or plies of rub-
ber-coated fabric that are in the tyre.
Tyre manufacturers also must indi-
cate the materials in the tyre, which
include steel, nylon, polyester, and
others. The letter "R" means radial
ply construction; the letter "D" means
diagonal or bias ply construction;
and the letter "B" means belted-bias
ply construction.
5. Maximum permissible infla-
tion pressure
This number is the greatest amount
of air pressure that should be put in
the tyre. Do not exceed the maximum
permissible inflation pressure. Refer
to the Tyre and Loading Information
label for recommended inflation
pressure.
6. Maximum load rating
This number indicates the maximum
load in kilograms and pounds that
can be carried by the tyre. When
replacing the tyres on the vehicle,
always use a tyre that has the same
load rating as the factory installed
tyre.
7. Uniform tyre quality grading
Quality grades can be found where
applicable on the tyre sidewall
between tread shoulder and maxi-
mum section width.
For example:
TREADWEAR 200
TRACTION AA
TEMPERATURE A
Tread wear
The tread wear grade is a compara-
tive rating based on the wear rate of
the tyre when tested under controlled
conditions on a specified govern-
ment test course. For example, a tyre
graded 150 would wear one-and-a-
half times (1½) as well on the gov-
ernment course as a tyre graded
100.
The relative performance of tyres
depends upon the actual conditions
of their use, however, and may
depart significantly from the norm
because of variations in driving
habits, service practices and differ-
ences in road characteristics and cli-
mate.
These grades are molded on the
side-walls of passenger vehicle
tyres. The tyres available as standard
or optional equipment on your vehi-
cles may vary with respect to grade.

8-4
Specifications & Consumer information
TYRES AND WHEELS
Item Tyre sizeWheel
sizeInflation pressure, bar (kPa, psi)
Wheel nut torque
kg•m (lb•ft, N•m) Normal load *1Maximum load
Front Rear Front Rear
Full size tyre205/65R16 6.5JX16 2.35 (235, 34) 2.35 (235, 34) 2.35 (235, 34) 2.35 (235, 34)
9~11
(65~79, 88~107) 215/55R17 7.0JX17 2.35 (235, 34) 2.35 (235, 34) 2.35 (235, 34) 2.35 (235, 34)
235/45R18 7.5JX18 2.35 (235, 34) 2.35 (235, 34) 2.35 (235, 34) 2.35 (235, 34)
Compact spare
tyre
(if equipped)T125/80D164.0TX164.2 (420, 60)4.2 (420, 60)4.2 (420, 60)4.2 (420, 60)
T135/80D174.0TX174.2 (420, 60)4.2 (420, 60)4.2 (420, 60)4.2 (420, 60)
When replacing tyres, use the same size originally supplied with the vehicle.
Using tyres of a different size can damage the related parts or not work properly.
CAUTION
*1Normal load : Up to 3 persons
AIR CONDITIONING SYSTEM
ItemsWeight of Volume Classification
Refrigerant
g (oz.) Theta 2.0T-GDI550 ± 25g (19.5 ± 0.8)R-134aTheta 2.4GDI650 ± 25g (22.9 ± 0.8)
Compressor lubricant
g (oz.) 100 ± 10 (3.52 ± 3.5)PAG (FD46 X G)
Contact an authorised HYUNDAI dealer for more details.