2018 Hyundai Sonata brake

7-44
Maintenance
Wheel Alignment and Tire
Balance
The wheels on your vehicle were
aligned and balanced carefully at the
factory to give you the longest tire life
and best overall performance.
In most cases, you will not need to
have your wheels aligned again.
However, if you notice unusual tire
wear or your vehicle pulling one way
or the other, the alignment may need
to be reset.
If you notice your vehicle vibrating
when driving on a smooth road, your
wheels may need to be rebalanced.
Improper wheel weights can dam-
age your vehicle’s aluminum
wheels. Use only approved wheel
weights.
Tire Replacement
If the tire is worn evenly, a tread wear
indicator will appear as a solid band
across the tread. This shows there is
less than 1/16 inch (1.6 mm) of tread
left on the tire. Replace the tire when
this happens.
Do not wait for the band to appear
across the entire tread before replac-
ing the tire.
NOTICE
OLMB073027
Tread wear indicatorTo reduce the risk of DEATH or
SERIOUS INJURY:
Replace tires that are worn,
show uneven wear, or are
damaged. Worn tires can
cause loss of braking effec-
tiveness, steering control, and
traction.
Always replace tires with the
same size as each tire that
was originally supplied with
this vehicle. Using tires and
wheels other than the recom-
mended sizes could cause
unusual handling characteris-
tics, poor vehicle control, or
negatively affect your vehi-
cle’s Anti-Lock Brake System
(ABS) resulting in a serious
accident.(Continued)
WARNING

7-61
7
Maintenance
Instrument panel fuse panel
Fuse Name Fuse rating Protected Component
SAFETY WINDOW LH25ADriver Safety Power Window Module
P/SEAT PASS30APassenger Seat Manual Switch
P/WDW LH20APower Window Main Switch, Rear Power Window Module LH
P/WDW RH25APower Window Main Switch, Rear Power Window Module RH, Passenger Door Module,
Passenger Power Window Switch
DR LOCK20ADoor Lock Relay, Door Unlock Relay
S/HEATER FRT25AFront Air Ventilation Seat Module, Front Seat Warmer Module
BRAKE SWITCH10AStop Lamp Switch, Immobilizer Module, Smart Key Control Module
8 MODULE7.5ABCM, Smart Key Control Module
SAFETY POWER WINDOWRH25APassenger Safety Power Window Module
SMART KEY15ASmart Key Control Module
TRUNK10ATrunk Lid Relay, Fuel Filler Door & Trunk Lid Switch
7 MODULE10ADigital Clock, Driver/Passenger Door Module
INTERIOR LAMP10AIgnition Key Ill. & Door Warning Switch, Front Vanity Lamp Switch LH/RH,
Overhead Console Lamp, Room Lamp, Rear Personal Lamp LH/RH, Trunk Room Lamp,
Driver/Passenger Smart Key Outside Handle
2 MEMORY7.5ANot used
P/SEAT DRV30ADriver Seat Manual Switch, Driver IMS Module
CLUSTER10AInstrument Cluster

7-66
Maintenance
Engine compartment main fuse panel
Fuse Name Fuse rating Protected Component
FUSE
3 E-CVVT20A[G4KJ/G4KH] PCM
2 E-CVVT20A[G4KJ/G4KH] PCM
FUEL PUMP20A(Fuel Pump Relay)
H/LAMP HI20A[With HID] (Head Lamp High Relay)
1 VACUUM PUMP20A[G4KH/G4FJ] Vacuum Pump
1 E-CVVT40A[G4KJ/G4KH] (E-CVVT Relay)
4 B+40ASmart Junction Block (Leak Current Auto-cut Device Fuse - INTERIOR LAMP,
MULTI MEDIA, MEMORY1, Fuse - DOOR LOCK, S/HEATER FR, BRAKE SWITCH,
SMART KEY, MODULE10)
A/CON10AA/C Control Module
HEATED MIRROR10AECM (G4FJ), A/C Control Module, Drover/Passenger Power Outside Mirror

7-68
Maintenance
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Consult an authorized HYUNDAI
dealer to replace most vehicle light
bulbs. It is difficult to replace vehicle
light bulbs because other parts of the
vehicle must be removed before you
can get to the bulb. This is especially
true for removing the headlamp
assembly to get to the bulb(s).
Removing/installing the headlamp
assembly can result in damage to
the vehicle.
Information
After heavy driving, rain or washing,
headlamp and trunk lenses could
appear frosty. This condition is caused
by the temperature difference
between the lamp inside and the out-
side temperature. This is similar to the
condensation on your windows inside
your vehicle during the rain and does-
n’t indicate a problem with your vehi-
cle. If the water leaks into the lamp
bulb circuitry, have your vehicle
checked by an authorized HYUNDAI
dealer.
Absorbent (if equipped)
This vehicle contains a dehumidify-
ing dehumidifier inside the headlamp
to mitigate the blurring of the head-
lamp due to moisture.
The desiccant is a consumable part
and its performance may change
depending on the usage time or envi-
ronment.
If the inside of the headlamp contin-
ues to become cloudy due to mois-
ture, we recommend that you consult
an authorized HYUNDAI dealer.
The desiccant is a consumable part
and cannot be guaranteed.
i
Prior to replacing a lamp,
depress the foot brake, move
the shift lever into P (Park)
apply the parking brake, place
the igntion switch to the
LOCK/OFF position, and take
the key with you when leaving
the vehicle to avoid sudden
movement of the vehicle and
to prevent possible electric
shock.
Be aware the bulbs may be
hot and may burn your fin-
gers.
WARNING

7-77
7
Maintenance
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Exterior Care
Exterior general caution
It is very important to follow the label
directions when using any chemical
cleaner or polish. Read all warning
and caution statements that appear
on the label.
High-pressure washing
When using high-pressure wash-
ers, make sure to maintain suffi-
cient distance from the vehicle.
Insufficient clearance or excessive
pressure can lead to component
damage or water penetration.
Do not spray the camera, sensors or its surrounding area directly with
a high pressure washer. Shock
applied from high pressure water
may cause the device to not oper-
ate normally.
Do not bring the nozzle tip close to boots (rubber or plastic covers)or
connectors as they may be dam-
aged if they come into contact with
high pressure water.
Finish maintenance
Washing
To help protect your vehicle’s finish
from rust and deterioration, wash it
thoroughly and frequently at least
once a month with lukewarm or cold
water.
If you use your vehicle for off-road
driving, you should wash it after each
off-road trip. Pay special attention to
the removal of any accumulation of
salt, dirt, mud, and other foreign
materials. Make sure the drain holes
in the lower edges of the doors and
rocker panels are kept clear and
clean.
Insects, tar, tree sap, bird droppings,
industrial pollution and similar
deposits can damage your vehicle’s
finish if not removed immediately.
Even prompt washing with plain
water may not completely remove all
these deposits. A mild soap, safe for
use on painted surfaces, should be
used. After washing, rinse the vehicle thor-
oughly with lukewarm or cold water.
Do not allow soap to dry on the fin-
ish.
After washing the vehicle, test
the brakes while driving slowly
to see if they have been affected
by water before getting on the
road. If braking performance is
impaired, dry the brakes by
applying them lightly while
maintaining a slow forward
speed.
WARNING

7-80
Maintenance
Thoroughly flush the vehicle under-
body and wheel openings with luke-
warm or cold water once a month,
after off-road driving and at the end
of each winter. Pay special attention
to these areas because it is difficult
to see all the mud and dirt. It will do
more harm than good to wet down
the road grime without removing it.
The lower edges of doors, rocker
panels, and frame members have
drain holes that should not be
allowed to clog with dirt; trapped
water in these areas can cause rust-
ing.
Aluminum wheel maintenance
The aluminum wheels are coated with
a clear protective finish.
Corrosion protection
Protecting your vehicle from corro-
sion
By using the most advanced design
and construction practices to combat
corrosion, HYUNDAI produces cars
of the highest quality. However, this is
only part of the job. To achieve the
long-term corrosion resistance your
vehicle can deliver, the owner’s
cooperation and assistance is also
required.
Common causes of corrosion
The most common causes of corro-
sion on your vehicle are:
Road salt, dirt and moisture that is allowed to accumulate underneath
the vehicle.
coatings by stones, gravel, abra-
sion or minor scrapes and dents
which leave unprotected metal
exposed to corrosion.
After washing the vehicle, test
the brakes while driving slowly
to see if they have been affected
by water. If braking performance
is impaired, dry the brakes by
applying them lightly while
maintaining a slow forward
speed.
WARNING
Do not use abrasive cleaner,
polishing compound, solvent,
or wire brushes on aluminum
wheels.
Clean the wheel when it has
cooled.
Use only a mild soap or neu-
tral detergent, and rinse thor-
oughly with water. Also, clean
the wheels after driving on
salted roads.
Do not wash the wheels with
high-speed car wash brushes.
Do not use any cleaners con-
taining acid or alkaline deter-
gents.
CAUTION

8-8
Specifications, Consumer information and Reporting safety defects
LubricantVolumeClassification
Coolant 1.6 T-GDI
7.50 US qt. (7.1l)
Mixture of antifreeze and water
(Ethylene glycol base coolant for aluminum radiator)
2.0 T-GDI
7.92 US qt. (7.5 l)
2.4 GDI
7.60 US qt. (7.2l)
Brake fluid
0.7~0.8 US qt. (0.7~0.8 l) FMVSS116 DOT-3 or DOT-4
Fuel18.5 US gal. (70l)Unleaded gasoline
(Continued)

I-2
Accessing your vehicle .....................................................3-4Immobilizer System ...................................................3-12
Remote Key ..................................................................3-4
Smart Key.....................................................................3-8\
Air Bag - Advanced Supplemental Restraint System.....2-45 Additional Safety Precautions ....................................2-67
Air Bag Warning Labels.............................................2-68
How Does the Air Bag System Operate? ...................2-51
Occupant Classification System (OCS) .....................2-56
SRS Care ....................................................................2-66\
What to Expect After an Air Bag Inflates ..................2-55
Where Are the Air Bags? ...........................................2-47
Why Didn't My Air Bag Go Off in a Collision? (Air bags are not designed to inflate in
every collision.).......................................................2-61
Air Cleaner......................................................................7-\
31 Filter Replacement .....................................................7-31
Air Conditioning System ..................................................8-6
Appearance Care .............................................................7-77 Exterior Care ..............................................................7-77
Interior Care ...............................................................7-82
Automatic climate control system ................................3-132 Automatic Heating and Air Conditioning ................3-133
Manual heating and Air Conditioning......................3-134
System Maintenance ................................................3-142
System Operation .....................................................3-140 Automatic emergency braking (AEB) ............................5-97
AEB warning message and system control................5-99
Limitation of the system ..........................................5-105
Sensor to detect the distance from the vehicle in front (front radar) ..............................................5-102
System malfunction ..................................................5-103
System setting and activation .....................................5-97
Battery ........................................................................\
.....7-37 Battery Recharging .....................................................7-38
For Best Battery Service ............................................7-38
Reset features .............................................................7-39
Before Driving ..................................................................5-4 Before Entering the Vehicle .........................................5-4
Before Starting .............................................................5-4
Blind Spot Detection System (BSD) ..............................5-89 BSD (Blind Spot Detection) / LCA (Lane Change Assist) .....................................5-90
RCTA (Rear Cross Traffic Alert) ...............................5-93
Brake Fluid .....................................................................7-2\
9 Checking the Brake Fluid Level ................................7-29
Index
A
B