2023 HYUNDAI SONATA warning

Maintenance
8-66
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
8-71
1. Crankcase Emission Control System
The positive crankcase ventilation system
is employed to prevent air pollution
caused by blow-by gases being emitted
from the crankcase. This system supplies
fresh filtered air to the crankcase through
the air intake hose. Inside the crankcase,
the fresh air mixes with blow-by gases,
which then pass through the PCV valve
into the induction system.
2. Evaporative Emission Control System Including Onboard
Refueling Vapor Recovery
(ORVR)
The Evaporative Emission Control System
is designed to prevent fuel vapors from
escaping into the atmosphere. The
ORVR system is designed to allow the
vapors from the fuel tank to be loaded
into a canister while refueling at the gas
station, preventing the escape of fuel
vapors into the atmosphere.
Canister
Fuel vapors generated inside the fuel
tank are absorbed and stored in the
onboard canister. When the engine is
running, the fuel vapors absorbed in the
canister are drawn into the surge tank
through the purge control solenoid valve.
Purge Control Solenoid Valve (PCSV)
The purge control solenoid valve
is controlled by the Engine Control
Module (ECM); when the engine coolant
temperature is low during idling, the
PCSV closes so that evaporated fuel
is not taken into the engine. After the
engine warms-up during ordinary
driving, the PCSV opens to introduce
evaporated fuel to the engine.
3. Exhaust Emission Control System
The Exhaust Emission Control System is
a highly effective system which controls
exhaust emissions while maintaining
good vehicle performance.
When the engine starts or fails to start,
excessive attempts to restart the engine
may cause damage to the emission
system.
Engine exhaust (carbon monoxide)
precautions • Carbon monoxide can be present
with other exhaust fumes. If you smell
exhaust fumes of any kind in your
vehicle, drive with all the windows
fully open. Have your vehicle checked
and repaired immediately.
WARNING
Engine exhaust gases contain carbon
monoxide (CO). Though colorless and
odorless, it is dangerous and could be
lethal if inhaled. Follow the instructions
on this page to avoid CO poisoning.

Maintenance
8-72
•
Do not operate the engine in confined
or closed areas (such as garages) any
more than what is necessary to move
the vehicle in or out of the area.
• When the vehicle is stopped in an
open area for more than a short time
with the engine running, adjust the
ventilation system (as needed) to draw
outside air into the vehicle.
• Never sit in a parked or stopped
vehicle for any extended time with the engine running.
• When the engine stalls or fails to
start, excessive attempts to restart
the engine may cause damage to the
emission control system.
Operating precautions for catalytic
converters (if equipped)
WARNING
The exhaust system and catalytic
converter are very hot during and
immediately after the engine has been
running. To avoid SERIOUS INJURY or
DEATH: • Do not park, idle, or drive the vehicle
over or near flammable objects, such
as grass, vegetation, paper, leaves,
etc. A hot exhaust system can ignite
flammable items under your vehicle.
• Keep away from the exhaust system
and catalytic converter or you may
get burned.
Also, do not remove the heat sink
around the exhaust system, do not
seal the bottom of the vehicle, and
do not coat the vehicle for corrosion
control. It may present a fire risk
under certain conditions. Your vehicle is equipped with a catalytic
converter emission control device.
To prevent damage to the catalytic
converter and to your vehicle, take the
following precautions: •
Use only UNLEADED FUEL for gasoline engines.
• Do not operate the vehicle when
there are signs of engine malfunction,
such as misfire or a noticeable loss of
performance.
• Do not misuse or abuse the engine.
Examples of misuse are coasting with
the engine off and descending steep
grades in gear with the engine off.
• Do not operate the engine at high
idle speed for extended periods (5
minutes or more).
• Do not modify or tamper with any
part of the engine or emission
control system. All inspections and
adjustments must be made by an
authorized HYUNDAI dealer.
• Avoid driving with extremely low
fuel level. If you run out of gasoline,
it could cause the engine to misfire
and result in excessive loading of the
catalytic converter.

Index
I-2
A
Accessing Your Vehicle ......................................................................................... 5-4
Immobilizer System ........................................................................................ 5-14
Remote Key ....................................................................................................... 5-4
Smart Key .......................................................................................................... 5-7
Air Bag - Advanced Supplemental Restraint System ..........................................3-37
Additional Safety Precautions .......................................................................... 3-57
Air Bag Warning Labels ................................................................................... 3-57
How Does the Air Bag System Operate? .........................................................3-42
Occupant Classification System (OCS) ...........................................................3-47
SRS Care .......................................................................................................... 3-56
What to Expect After an Air Bag Inflates ........................................................3-46
Where Are the Air Bags? .................................................................................. 3-39
Why Didn’t My Air Bag Go Off in a Collision? ..............................................3-52
Air Cleaner........................................................................................................... 8-31
Filter Replacement ........................................................................................... 8-31
Air Conditioning System ..................................................................................... 2-13
Appearance Care .................................................................................................. 8-64
Exterior Care .................................................................................................... 8-64
Interior Care ..................................................................................................... 8-68
Automatic Climate Control System ................................................................... 5-114
Automatic Heating and Air Conditioning ......................................................5-115
Manual Temperature Control Mode ............................................................... 5-116
System Maintenance ...................................................................................... 5-123
System Operation ........................................................................................... 5-122
Automatic Transmission ...................................................................................... 6-13
Automatic Transmission Operation .................................................................. 6-13
Good Driving Practices ................................................................................... 6-18
LCD Display Message ..................................................................................... 6-17
Paddle Shifter (Manual Shift Mode) ............................................................... 6-19
Parking ............................................................................................................. 6-16

I
I-3
B
Basic Troubleshooting Guide .............................................................................. 7-20
Battery ................................................................................................................. 8-36
Battery Recharging ........................................................................................... 8-37
For Best Battery Service .................................................................................. 8-36
Reset Features .................................................................................................. 8-37
Before Driving ....................................................................................................... 6-5
Before Entering the Vehicle ............................................................................... 6-5
Before Starting ................................................................................................... 6-5
Blind View Monitor (BVM) ............................................................................. 6-104
Blind-Spot Collision Warning (BCW) /
Blind-Spot Collision-Avoidance Assist (BCA) ...................................................6-77
Detecting Sensors (Front View Camera and Rear Corner Radar) ....................6-82
Limitations of the System ................................................................................ 6-85
System Description .......................................................................................... 6-77
System Setting and Activation ......................................................................... 6-78
Warning and System Control ........................................................................... 6-80
Brake Fluid .......................................................................................................... 8-29
Checking the Brake Fluid Level ....................................................................... 8-29
Brake System ....................................................................................................... 6-30
Anti-Lock Brake System (ABS) ...................................................................... 6-37
Auto Hold ......................................................................................................... 6-34
Disc Brakes Wear Indicator .............................................................................. 6-30
Electronic Parking Brake (EPB) ...................................................................... 6-31
Electronic Stability Control (ESC) ................................................................... 6-39
Good Braking Practices .................................................................................... 6-42
Hill-Start Assist Control (HAC) ....................................................................... 6-42
Power Brakes .................................................................................................... 6-30
Vehicle Stability Management (VSM) .............................................................6-41
Bulb Wattage ........................................................................................................ 2-11
C Child Restraint System (CRS) ............................................................................. 3-29
Children Always in the Rear ............................................................................ 3-29
Installing a Child Restraint System (CRS) .......................................................3-31
Selecting a Child Restraint System (CRS) .......................................................3-30
Climate Control Additional Features ................................................................. 5-130
Automatic Ventilation .................................................................................... 5-130
Sunroof Inside Air Recirculation ................................................................... 5-130

Index
I-4
Climate Control Air Filter .................................................................................... 8-33
Filter Inspection ................................................................................................ 8-33
Filter Replacement ........................................................................................... 8-33
D Declaration of Conformity ................................................................................... 6-89
The Radio Frequency Components (Rear Corner Radar) Complies: ...............6-89
Dimensions .......................................................................................................... 2-10
Door Locks .......................................................................................................... 5-16
Automatic Door Lock and Unlock Features ....................................................5-20
Child-Protector Rear Door Locks .................................................................... 5-20
Operating Door Locks from Inside the Vehicle................................................ 5-17
Operating Door Locks from Outside the Vehicle .............................................5-16
Rear Occupant Alert (ROA) System ................................................................ 5-21
Vehicle Auto-Shut Off Function ....................................................................... 5-22
Drive Mode Integrated Control System ..............................................................6-45
Drive Mode ...................................................................................................... 6-45
Vehicle Characteristic ....................................................................................... 6-49
Driver Attention Warning (DAW) ....................................................................... 6-96
Leading Vehicle Departure Alert ................................................................... 6-101
Resetting the System ........................................................................................ 6-98
System Malfunction ......................................................................................... 6-99
System Setting and Operation .......................................................................... 6-96
System Standby ................................................................................................ 6-99
Driver position memory system .......................................................................... 5-24
Easy Access Function ....................................................................................... 5-26
Recalling Positions from Memory ................................................................... 5-25
Resetting the Driver’s Seat Memory System ...................................................5-25
Storing Positions into Memory ....................................................................... 5-24
Dual Clutch Transmission .................................................................................. 6-20
Dual Clutch Transmission Operation ............................................................... 6-20
Good Driving Practices ................................................................................... 6-29
LCD Display Message (Button Type) ..............................................................6-27
Parking ............................................................................................................. 6-27

I
I-5
E Emission Control System .................................................................................... 8-70
Engine Compartment ..................................................................................... 2-8/ 8-3
Engine Coolant .................................................................................................... 8-26
Changing Engine Coolant ................................................................................ 8-28
Checking the Engine Coolant Level ................................................................. 8-26
Engine Number .................................................................................................... 2-17
Engine Oil ............................................................................................................ 8-23
Checking the Engine Oil and Filter .................................................................. 8-25
Checking the Engine Oil Level ........................................................................ 8-23
Engine Specification ............................................................................................ 2-10
Explanation of Scheduled Maintenance Items ....................................................8-20
Exterior Features .................................................................................................. 5-50
Emergency Trunk Safety Release..................................................................... 5-52
Fuel Filler Door ................................................................................................ 5-56
Hood ................................................................................................................. 5-50
Trunk ................................................................................................................ 5-51
Exterior Overview ................................................................................................. 2-2
F
Forward Collision – Avoidance Assist (FCA) - Sensor Fusion ...........................6-50
FCA Sensor ...................................................................................................... 6-55
FCA Warning Message And Brake Control .....................................................6-52
Forward Collision-Avoidance Assist - Junction Turning ................................6-65
Limitations of The System ............................................................................... 6-58
System Malfunction ......................................................................................... 6-57
System Setting and Activation ......................................................................... 6-50
Forward/Reverse Parking Distance Warning (PDW) ..........................................5-86
Forward/Reverse Parking Distance Warning System Precautions ...................5-90
Non-Operational Conditions of Forward/Reverse Parking Distance
Warning System ............................................................................................. 5-89
Operation of Forward/Reverse Parking Distance Warning System .................5-87
Fuel Requirements ................................................................................................. 1-5
Fuses .................................................................................................................... 8-50
Engine Compartment Panel Fuse Replacement ...............................................8-52
Fuse/Relay Panel Description .......................................................................... 8-53
Instrument Panel Fuse Replacement ................................................................ 8-51

Index
I-6
G Guide to Hyundai Genuine Parts ........................................................................... 1-3
HHead up display (HUD) ....................................................................................... 5-59
Heating and Air Conditioning ............................................................................ 5-106
System Maintenance ...................................................................................... 5-112
System Operation ........................................................................................... 5-111
Highway Driving Assist (HDA) ........................................................................ 6-132
System Setting and Operation ........................................................................ 6-133
Warning Message ........................................................................................... 6-135
How to Use This Manual ....................................................................................... 1-4
Hyundai Auto Canada ........................................................................................... 1-2
IIf the Engine Overheats ......................................................................................... 7-6
If the Engine Will not Start .................................................................................... 7-3
If the Engine Doesn’t Turn Over or Turns Over Slowly ....................................7-3
If the Engine Turns Over Normally but Doesn’t Start .......................................7-3
If you Have a Flat Tire (With Spare Tire) ............................................................7-12
Changing Tires ................................................................................................. 7-13
Jack and Tools .................................................................................................. 7-12
Ignition Switch ...................................................................................................... 6-6
Engine Start/Stop Button ................................................................................... 6-9
Key Ignition Switch .......................................................................................... 6-6
Remote Start ..................................................................................................... 6-12
Important Safety Precautions ................................................................................. 3-2
Air Bag Hazards ................................................................................................. 3-2
Always Wear Your Seat Belt .............................................................................. 3-2
Control Your Speed ............................................................................................ 3-2
Driver Distraction ............................................................................................... 3-2
Keep Your Vehicle in Safe Condition ................................................................. 3-2
Restrain All Children .......................................................................................... 3-2