2021 HYUNDAI ELANTRA engine

09
9-69
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.
WARNING
CALIFORNIA PROPOSITION 65
WARNING
Engine exhaust and a wide variety of
automobile components and parts,
including components found in the
interior furnishings in a vehicle, contain
or emit chemicals known to the State
of California to cause cancer and
birth defects and reproductive harm.
In addition, certain fluids contained
in vehicles and certain products of
component wear contain or emit
chemicals known to the State of
California to cause cancer and birth
defects or other reproductive harm. •
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.

Maintenance
9-70
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-4
C
Cabin Air Filter
........................................................................\
............................9-21
California Perchlorate notice
........................................................................\
....... 9-71
Child Restraint System (CRS)
........................................................................\
..... 3-26
Children Always in the Rear ........................................................................\
....3-26
Installing a Child Restraint System (CRS) .......................................................3-28
Selecting a Child Restraint System (CRS) .......................................................3-27
Climate Control

Additional Features
................................................................. 5-109
Auto comfort control (for driver’

s seat)
......................................................... 5-109
Automatic ventilation ........................................................................\
............. 5-109
Sunroof inside air recirculation ......................................................................5-109
Consumer Information
........................................................................\
................. 2-15
Cruise Control (CC)
........................................................................\
.................... 7-77
Function operation ........................................................................\
...................7-77
D
Declaration of Conformity
........................................................................\
......... 7-150
Dimensions
........................................................................\
.................................... 2-7
Drive Mode Integrated Control System
............................................................... 6-39
Drive Mode ........................................................................\
.............................. 6-39
Smart shift on trip computer ........................................................................\
.....6-42
Driver Attention

Warning (DAW)
...................................................................... 7-71
Function malfunction and limitations ..............................................................7-74
Function settings ........................................................................\
..................... 7-71
System operation ........................................................................\
...................... 7-72
E
Emission Control System
........................................................................\
............ 9-68
Engine Compartment
........................................................................\
............. 2-6/ 9-3
Engine Coolant
........................................................................\
............................ 9-16
Changing Engine Coolant ........................................................................\
........9-17
Checking the Engine Coolant Level .................................................................9-16
Engine Number
........................................................................\
............................ 2-14
Engine Oil
........................................................................\
.................................... 9-15
Checking the Engine Oil and Filter ..................................................................9-15
Checking the Engine Oil Level ........................................................................\
9-15
Engine Specification
........................................................................\
...................... 2-7
Explanation of Scheduled Maintenance Items
.................................................... 9-13

I
I-5
Exterior Lights ........................................................................\
.............................5-68
Battery saver function ........................................................................\
..............5-71
Headlamp delay function ........................................................................\
.........5-71
High beam operation ........................................................................\
................ 5-69
Lighting control ........................................................................\
........................ 5-68
Turn signals and lane change signals ...............................................................5-70
Exterior Overview
........................................................................\
......................... 2-2
F
Filter Inspection
........................................................................\
........................... 9-21
Filter replacement ........................................................................\
.....................9-21
Forward Collision–A

voidance Assist (FCA) (front view camera only)
...............7-2
Function malfunction and limitations ................................................................ 7-7
Function operation ........................................................................\
...................... 7-5
Function settings ........................................................................\
........................ 7-3
Forward Collision–A

voidance Assist (FCA) (sensor fusion)
..............................7-14
Function malfunction and limitations .............................................................. 7-22
Function operation ........................................................................\
.................... 7-18
Function settings ........................................................................\
...................... 7-16
Fuel Filler Door
........................................................................\
........................... 5-66
Fuel Requirements
........................................................................\
......................... 1-5
Fuses
........................................................................\
............................................ 9-40
Engine Compartment Panel Fuse Replacement ...............................................9-42
Fuse/Relay Panel Description ........................................................................\
.. 9-43
Instrument Panel Fuse Replacement ................................................................9-41
G
Guide to Hyundai Genuine Parts
........................................................................\
... 1-3
H
Hazard W

arning Flasher
........................................................................\
................ 8-2
High Beam

Assist (HBA)
........................................................................\
........... 5-72
Detecting sensor (Front view camera) .............................................................5-72
Function malfunction and limitations .............................................................. 5-73
Function operation ........................................................................\
.................... 5-73
Function settings ........................................................................\
...................... 5-72

Index
I-6
Highway Driving Assist (HDA) ........................................................................\
7-109
Function malfunction and limitations ............................................................7-1

13
Function operation ........................................................................\
..................7

-111
Function settings ........................................................................\
....................7-1

10
Hood
........................................................................\
............................................ 5-59
How to Use

This Manual
........................................................................\
............... 1-4
I
If the Engine Overheats
........................................................................\
................. 8-6
If the Engine

Will not Start
........................................................................\
............ 8-3
If the Engine Doesn’t

Turn Over or Turns Over Slowly
....................................8-3
If the Engine T

urns Over Normally but Doesn’t Start
....................................... 8-3
If you Have a Flat

Tire (With spare tire)
............................................................. 8-14
Changing Tires ........................................................................\
......................... 8-15
Jack and T

ools
........................................................................\
.......................... 8-14
Ignition Switch
........................................................................\
.............................. 6-5
Engine Start/Stop Button ........................................................................\
............6-8
Key Ignition Switch ........................................................................\
.................. 6-5
Important Safety Precautions
........................................................................\
......... 3-2
Air Bag Hazards ........................................................................\
......................... 3-2
Always W

ear Your Seat Belt
........................................................................\
...... 3-2
Control Your

Speed
........................................................................\
.................... 3-2
Driver Distraction ........................................................................\
....................... 3-2
Keep Y

our Vehicle in Safe Condition
................................................................. 3-2
Restrain All

Children
........................................................................\
.................. 3-2
In Case of an Emer

gency While Driving
............................................................... 8-2
If the Engine Stalls at a Crossroad or Crossing ..................................................8-2
If the Engine Stalls While Driving ..................................................................... 8-2
If you Have a Flat T

ire While Driving
............................................................... 8-3
Infotainment System
........................................................................\
.................. 5-1

17
Antenna ........................................................................\
..................................5-1

18
Bluetooth® Wireless Technology hands-free ..................................................5-120
How vehicle radio works ........................................................................\
........ 5-121
Infotainment system ........................................................................\
............... 5-120
Steering wheel audio control ........................................................................\
..5-1

19
USB Port ........................................................................\
................................5-1

17
Voice recognition ........................................................................\
....................5-120