Door HYUNDAI SONATA 2021 Owners Manual

Maintenance
8-52
Instrument panel fuse panel
Fuse Name (A)Circuit Protected
S/HEATER (FRT) 25A Front Seat Warmer Control Module, Front Air Ventilation Seat
Control Module
TRUNK 10AICU Junction Block (Trunk Lid Relay)
DOOR LOCK 20AICU Junction Block (Door Lock Relay,
Door Unlock Relay, Two Turn Unlock Relay)
MODULE1 7.5A Key Solenoid
MODULE3 10ADriver Door Module, Passenger Seat Relax Unit,
Hazard Switch, Crash Pad Switch (Up),
Front Mood Lamp Unit, Start/stop Button Switch,
Driver/Passeger Smart Key Outside Handle
S/HEATER (RR) 25A Rear Seat Warmer Control Module
P/SEAT (PASS) 30APassenger Seat Manual Switch, Passenger Seat Relax Unit
MODULE6 10ADriver Door Module
SAFETY
P/WINDOW (RH) 30APassenger Safety Power Window Module,
Rear Power Window Switch RH
P/SEAT (DRV) 30ADirver Seat Manual Switch, Driver IMS Module
IBU1 15A IBU, Driver/Passenger Door NFC Module, IAU,
BLE Unit, Ignition Switch
AMP 25A AMP, DC-DC Converter (AMP)
SAFETY
P/WINDOW (LH) 30ADriver Safety Power Window Module,
Rear Power Window Switch LH
BRAKE SWITCH 10AIBU, Stop Lamp Switch
SUNROOF2 20APanorama Sunroof, Data Link Connector
AIR BAG2 10ASRS Contorl Module
AIR BAG1 15A SRS Contorl Module, Passenger Occupant Detection Sensor
E-SHIFTER1 10ASCU, Electronic ATM Shift Lever
MEMORY 10ADriver IMS Module, Security Indicator, A/C Switch,
Driver/Passenger Power Outside Mirror,
A/C Control Module, Instrument Cluster,
Rain Sensor, Head-Up Display

Maintenance
8-56
Engine compartment fuse panel
Fuse Name (A)Circuit Protected
FUSE HEATED
MIRROR 10ADriver/Passenger Power Outside Mirror, A/C Switch,
A/C Control Module, ECM
ECU5 10A[G4FN] ECM
AMS 10ABattery Sensor
FUEL PUMP 1 20AE/R Junction Block (Fuel Pump Relay)
A/C 2 10AA/C Control Module
B+4 60AICU Junction Block (Long Term Load Latch Relay,
Fuse - MODULE3, AIR BAG2, E-SHIFTER1, SUNROOF1,
SUNROOF2, S/HEATER (FRT), TRUNK, BRAKE SWITCH,
DOOR LOCK)

08
8-63
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 washers,
make sure to maintain sufficient
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 operate normally.
• Do not bring the nozzle tip close to
boots (rubber or plastic covers) or
connectors as they may be damaged
if they come into contact with high
pressure water.
• Do not use any high-pressure nozzles,
which induce either one-direct water
stream or water swirling.
Protecting your vehicle’s finish
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
thoroughly with lukewarm or cold water.
Do not allow soap to dry on the finish.
WARNING
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.
NOTICE
• Do not use strong soap, chemical
detergents or hot water, and do not
wash the vehicle in direct sunlight
or when the body of the vehicle is
warm.
• Be careful when washing the side
windows of your vehicle.
Especially, with high-pressure water,
water may leak through the windows
and wet the interior.
• To prevent damage to the plastic
parts, do not clean with chemical
solvents or strong detergents.
appEaranCE CarE

08
8-65
Repairing your vehicle’s finish
Deep scratches or stone chips in the
painted surface must be repaired
promptly. Exposed metal will quickly
rust and may develop into a major repair
expense.
NOTICE
If your vehicle is damaged and requires
any metal repair or replacement,
be sure the body shop applies anti-
corrosion materials to the parts
repaired or replaced.
NOTICE
Matte paint finish vehicle (if equipped)
In case of matte paint finish vehicles,
it is impossible to modify only the
damaged area and repair of the whole
part is necessary. If the vehicle is
damaged and painting is required,
we recommend that you have your
vehicle maintained and repaired by
an authorized HYUNDAI dealer. Take
extreme care, as it is difficult to restore
the quality after the repair.
Bright-metal maintenance
• To remove road tar and insects, use
a tar remover, not a scraper or other
sharp object.
• To protect the surfaces of bright metal
parts from corrosion, apply a coating
of wax or chrome preservative and rub
to a high luster.
• During winter weather or in coastal
areas, cover the bright metal parts
with a heavier coating of wax or
preservative. If necessary, coat the
parts with non-corrosive petroleum
jelly or other protective compound.
Underbody maintenance
Corrosive materials used for ice and
snow removal and dust control may
collect on the underbody. If these
materials are not removed, accelerated
rusting can occur on underbody parts
such as the fuel lines, frame, floor pan
and exhaust system, even though they
have been treated with rust protection.
Thoroughly flush the vehicle underbody
and wheel openings with lukewarm 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 rusting.
WARNING
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.
Aluminum wheel maintenance
The aluminum wheels are coated with a
clear protective finish.

08
8-67
• When cleaning underneath the
vehicle, pay particular attention to the
components under the fenders and
other areas that are hidden from view.
Do a thorough job; just dampening
the accumulated mud rather than
washing it away will accelerate
corrosion rather than prevent it. Water
under high pressure and steam are
particularly effective in removing
accumulated mud and corrosive
materials.
• When cleaning lower door panels,
rocker panels and frame members, be
sure that drain holes are kept open so
that moisture can escape and not be
trapped inside to accelerate corrosion.
Keep your garage dry
Don’t park your vehicle in a damp,
poorly ventilated garage. This creates
a favorable environment for corrosion.
This is particularly true if you wash your
vehicle in the garage or drive it into the
garage when it is still wet or covered with
snow, ice or mud. Even a heated garage
can contribute to corrosion unless it is
well ventilated so moisture is dispersed.
Keep paint and trim in good condition
Scratches or chips in the finish should
be covered with “touch-up” paint as
soon as possible to reduce the possibility
of corrosion. If bare metal is showing
through, the attention of a qualified body
and paint shop is recommended.
Bird droppings are highly corrosive and
may damage painted surfaces in just a
few hours. Always remove bird droppings
as soon as possible.Interior Care
Interior general precautions
Prevent caustic solutions such as
perfume and cosmetic oil, from
contacting the interior parts because
they may cause damage or discoloration.
If they do contact the interior parts,
wipe them off immediately. See the
instructions for the proper way to clean
vinyl.
NOTICE
• Never allow water or other liquids
to come in contact with electrical/
electronic components inside the
vehicle as this may damage them.
• When cleaning leather products
(steering wheel, seats etc.), use
neutral detergents or low alcohol
content solutions. If you use high
alcohol content solutions or acid/
alkaline detergents, the color of the
leather may fade or the surface may
get stripped off.
Cleaning the upholstery and interior
trim
Vinyl (if equipped)
Remove dust and loose dirt from vinyl
with a whisk broom or vacuum cleaner.
Clean vinyl surfaces with a vinyl cleaner.
Fabric (if equipped)
Remove dust and loose dirt from
fabric with a whisk broom or vacuum
cleaner. Clean with a mild soap solution
recommended for upholstery or carpets.
Remove fresh spots immediately with
a fabric spot cleaner. If fresh spots do
not receive immediate attention, the
fabric can be stained and its color can be
affected. Also, its fire-resistant properties
can be reduced if the material is not
properly maintained.

Index
I-4
Bulb replacement ........................................................................\
.........................8-57
Headlamp

........................................................................\
................................ 8-57
Parking lamp


........................................................................\
........................... 8-57
Daytime running light
........................................................................\
............. 8-57
T

urn signal lamp

........................................................................\
...................... 8-57
Cornering lamp ........................................................................\
....................... 8-57
Side marker


........................................................................\
............................. 8-57
Auxiliary lamp


........................................................................\
........................ 8-57
Side repeater lamp


........................................................................\
................... 8-58
Rear combination light bulb


........................................................................\
.... 8-58
High mounted stop lamp


........................................................................\
......... 8-60
License plate light


........................................................................\
.................. 8-60
Interior light


........................................................................\
........................... 8-61
Bulb wattage


........................................................................\
.................................. 2-8
C
California perchlorate notice


........................................................................\
....... 8-72
Capacities (Lubricants)


........................................................................\
................ 2-11
Care Tire care


........................................................................\
................................... 8-34
Exterior care


........................................................................\
............................ 8-63
Interior care


........................................................................\
............................. 8-67
Center console storage


........................................................................\
............... 5-144
Central door lock/unlock switch


........................................................................\
.. 5-33
Certification label


........................................................................\
........................ 2-13
Check tire inflation pressure


........................................................................\
........ 8-35
Child restraint system (CRS)


........................................................................\
....... 3-29
Selecting a child restraint system (CRS)


.........................................................3-30
Rearward-facing child restraint system


...........................................................3-30
Forward-facing child restraint system


.............................................................3-31
Booster seats........................................................................\
............................ 3-31
Installing a child restraint system (CRS)


........................................................3-31
Lower anchors and tether for Children (LATCH System)
..............................3-32
Lower anchors

........................................................................\
........................ 3-33
T

ether anchors

........................................................................\
......................... 3-34
Lap/shoulder belt


........................................................................\
..................... 3-35
Child-protector rear door lock


........................................................................\
..... 5-35
Climate control air filter


........................................................................\
.............. 8-28

I
I-5
Clock ........................................................................\
..........................................5-150
Clothes hanger

........................................................................\
........................... 5-150
Crankcase emission control system
..................................................................... 8-70
Cup holder

........................................................................\
................................. 5-145
Curtain air bags


........................................................................\
............................ 3-41
D
Daytime running light (DRL)


........................................................................\
...... 5-74
Declaration of conformity........................................................................\
............ 6-79 The radio frequency components (Rear Corner Radar) complies


...................6-79
Defroster
........................................................................\
.................................... 5-142
Dimensions
........................................................................\
.................................... 2-7
Door locks
........................................................................\
.................................... 5-31
Central door lock/unlock switch


..................................................................... 5-33
Child-protector rear door lock


........................................................................\
. 5-35
Auto door lock/unlock features
....................................................................... 5-34
Operating door locks from outside the vehicle


...............................................5-31
Operating door locks from inside the vehicle


.................................................5-32
Rear Occupant Alert (ROA) system
................................................................ 5-36
Vehicle Auto-Shut Off Function
..................................................................... 5-37
Drive mode integrated control system


................................................................ 6-37
Drive mode


........................................................................\
.............................. 6-37
Driver Attention Warning (DAW)
...................................................................... 6-86
Leading vehicle departure alert


....................................................................... 6-91
Driver position memory system........................................................................\
... 5-39 Storing positions into memory


........................................................................\
5-39
Easy access function


........................................................................\
............... 5-41
Driver’s air bag
........................................................................\
............................ 3-39
Driving at night


........................................................................\
.......................... 6-141
Driving in flooded areas


........................................................................\
............ 6-142
Driving in the rain


........................................................................\
...................... 6-141
E
Electric Power Steering (EPS)


........................................................................\
..... 5-42
Electronic Stability Control (ESC)


...................................................................... 6-29
Emergency towing


........................................................................\
....................... 7-19
Emergency trunk safety release


........................................................................\
... 5-66

Index
I-6
Emission control system ........................................................................\
.............. 8-69
Crankcase emission control system

................................................................ 8-70
Evaporative emission control System


.............................................................8-70
Exhaust emission control system
.................................................................... 8-70
Engine compartment


........................................................................\
.............. 2-6, 8-3
Engine compartment panel fuse replacement


......................................................8-50
Engine coolant


........................................................................\
............................. 8-21
Engine coolant temperature gauge........................................................................\
. 4-4
Engine number


........................................................................\
............................. 2-14
Engine oil


........................................................................\
..................................... 8-19
Engine specification........................................................................\
....................... 2-7
Engine Start/Stop button


........................................................................\
................ 6-9
Evaporative emission control System


.................................................................. 8-70
Event Data Recorder (EDR)


........................................................................\
.......... 1-8
Exhaust emission control system


........................................................................\
. 8-70
Explanation of scheduled maintenance items


......................................................8-16
Exterior care........................................................................\
................................. 8-63
Exterior features........................................................................\
........................... 5-64 Hood
........................................................................\
........................................ 5-64
Trunk

........................................................................\
....................................... 5-65
Emer

gency trunk safety release....................................................................... 5-66
Fuel Filler Door


........................................................................\
....................... 5-70
Exterior overview Front view
........................................................................\
................................. 2-2
Rear view


........................................................................\
.................................. 2-3
F
Flat tire


........................................................................\
......................................... 7-12
Changing spare tire


........................................................................\
................ 7-12
Floor mat anchor(s)........................................................................\
.................... 5-151
Fluid Brake fluid


........................................................................\
............................... 8-24
Washer fluid


........................................................................\
............................ 8-25
Forward Collision-Avoidance Assist (FCA)


.......................................................6-40
FCA-Junction Turning function


...................................................................... 6-55
Forward/Reverse Parking Distance Warning (PDW)
..........................................5-99

I
I -7
Front seat adjustment ........................................................................\
..................... 3-5
Manual adjustment

........................................................................\
.................... 3-5
Power adjustment


........................................................................\
...................... 3-7
Reclining seatback


........................................................................\
.................... 3-8
Front seat head restraints Adjusting the height up and down


.................................................................. 3-12
Removal/Reinstallation


........................................................................\
........... 3-13
Fuel Filler Door
........................................................................\
........................... 5-70
Fuel gauge
........................................................................\
...................................... 4-4
Fuel requirements


........................................................................\
.......................... 1-5
Fuel additives


........................................................................\
............................ 1-6
Fuses
........................................................................\
............................................ 8-48
Instrument panel fuse replacement.................................................................. 8-49
Engine compartment panel fuse replacement
................................................. 8-50
Fuse/relay panel description


........................................................................\
.... 8-51
G
Gauges and meters


........................................................................\
......................... 4-3
Glove box
........................................................................\
.................................. 5-144
Guide to Hyundai genuine parts


........................................................................\
.... 1-3
H
Hazard warning flasher


........................................................................\
.................. 7-2
Hazardous driving conditions


........................................................................\
.... 6-140
Head restraints


........................................................................\
............................. 3-11
Front seat head restraints


........................................................................\
......... 3-12
Rear seat restraints


........................................................................\
.................. 3-14
Headlamp delay function


........................................................................\
............. 5-79
Headlamp leveling device........................................................................\
............ 5-80
Headlamp position


........................................................................\
....................... 5-75
Head-up display (HUD)
........................................................................\
............... 5-72
Heated steering wheel


........................................................................\
.................. 5-44
High Beam Assist (HBA)


........................................................................\
........... 5-76
High beam operation........................................................................\
.................... 5-75
Highway driving
........................................................................\
........................ 6-142
Highway Driving Assist (HDA)
........................................................................\
6-122
Hill-start assist control (HAC)


........................................................................\
..... 6-32
HomeLink
® system ........................................................................\
...................... 5-47
Hood

........................................................................\
............................................ 5-64

Index
I-10
L
LabelVehicle certification label


........................................................................\
........ 2-13
Tire specification and pressure label


............................................................... 2-14
Refrigerant label


........................................................................\
...................... 2-15
Lane change signals


........................................................................\
..................... 5-79
Lane Following Assist (LFA)
........................................................................\
.... 6-116
Lane Keeping Assist (LKA)

........................................................................\
........ 6-59
LCD display (T

ype A, B) ........................................................................\
............. 4-19
LCD display control


........................................................................\
................ 4-19
LCD display modes


........................................................................\
................. 4-20
Trip computer


........................................................................\
.......................... 4-31
LCD display (Type C)
........................................................................\
................. 4-34
LCD display control


........................................................................\
................ 4-34
View modes
........................................................................\
............................. 4-35
Utility view mode


........................................................................\
.................... 4-36
Option menu


........................................................................\
............................ 4-38
User settings mode


........................................................................\
.................. 4-39
LCD display messages
........................................................................\
................. 4-15
Shift to P

or N to start engine

........................................................................\
.. 4-15
Shift to P
........................................................................\
.................................. 4-15
Low key battery........................................................................\
....................... 4-15
Press brake pedal to start engine


..................................................................... 4-15
Key not in vehicle


........................................................................\
................... 4-16
Key not detected


........................................................................\
...................... 4-16
Press START button again


........................................................................\
...... 4-16
Press START button with key


........................................................................\
. 4-16
Battery discharging due to external electrical devices


....................................4-16
Check BRAKE SWITCH fuse
........................................................................\
4-16
Door, Hood, Trunk open indicator


.................................................................. 4-17
Sunroof open indicator


........................................................................\
............ 4-17
Lights mode


........................................................................\
............................. 4-17
Wiper mode


........................................................................\
............................. 4-18
Low pressure
........................................................................\
........................... 4-17