2021 HYUNDAI ELANTRA SEL check engine

01
1-5
Your new vehicle is designed to obtain
maximum performance with UNLEADED
FUEL, as well as minimize exhaust
emissions and spark plug fouling.
Your new vehicle is designed to use only
unleaded fuel having an octane number
((R+M)/2) of 87 (Research Octane
Number 91) or higher. (Do not use
methanol blended fuels)
NOTICE
To prevent damage to the engine and
engine components, never add any fuel
system cleaning agents to the fuel tank
other than what has been specified.
Consult an authorized HYUNDAI dealer
for additional information.
WARNING
•Do not “top off” after the nozzle
automatically shuts off when
refueling.
• Always check that the fuel cap is
installed securely to prevent fuel
spillage in the event of an accident.
fuel requIreMents
Throughout this manual DANGER,
WARNING, CAUTION, NOTICE and the
SAFETY ALERT SYMBOL will be used.
This is the safety alert symbol. It
is used to alert you to potential
physical injury hazards. Obey
all safety messages that follow
this symbol to avoid possible
injury or death. The safety alert
symbol precedes the signal
words DANGER, WARNING and
CAUTION.
DANGER
DANGER indicates a hazardous
situation which, if not avoided, will
result in death or serious injury.
WARNING
WARNING indicates a hazardous
situation which, if not avoided, could
result in death or serious injury.
CAUTION
CAUTION indicates a hazardous
situation which, if not avoided, could
result in minor or moderate injury.
NOTICE
NOTICE indicates a situation which,
if not avoided, could result in vehicle
damage.

Vehicle Information
2-12
Recommended SAE Viscosity
Number
CAUTION
Always be sure to clean the area around
any filler plug, drain plug, or dipstick
before checking or draining any
lubricant. This is especially important
in dusty or sandy areas and when the
vehicle is used on unpaved roads.
Cleaning the plug and dipstick areas
will prevent dirt and grit from entering
the engine and other mechanisms that
could be damaged.Engine oil viscosity (thickness) has an
effect on fuel economy and cold weather
operating (engine start and engine oil
flowability). Lower viscosity engine oils
can provide better fuel economy and
cold weather performance, however,
higher viscosity engine oils are required
for satisfactory lubrication in hot
weather.
Using oils of any viscosity other than
those recommended could result in
engine damage.
When choosing an oil, consider the
range of temperature your vehicle will be
operated in before the next oil change.
Proceed to select the recommended oil
viscosity from the chart.
Temperature Range for SAE Viscosity Numbers
Temperature °C
-30 -20 -10 0 10 20 30 40 50
(°F) -10 0 20 40 60 80 100 120
Engine Oil *
10W-20
*1 : Requires grade engine oil. If a lower grade engine oil (mineral
oil) is used, then the engine oil and engine oil filter must be replaced as indicated for
severe maintenance condition.
An engine oil displaying this American Petroleum Institute(API)
Certification Mark conforms to the International Lubricant Specification
Advisory Committee (ILSAC). It is recommended to only use engine oils
that uphold this API Certification Mark.

03
3-41
SRS warning light
The SRS (Supplement Restraint System)
air bag warning light on the instrument
panel displays the air bag symbol
depicted in the illustration. The system
checks the air bag electrical system for
malfunctions. The light indicates that
there is a potential malfunction with your
air bag system, which could include your
side and curtain air bags used for rollover
protection.
WARNING
If your SRS malfunctions, the air bag
may not inflate properly during an
accident increasing the risk of serious
injury or death.
If any of the following conditions occur,
your SRS is malfunctioning:
• The light does not turn on for
approximately three to six seconds
when the Engine Start/Stop button is
in the ON position.
• The light stays on after illuminating
for approximately three to six
seconds.
• The light comes on while the vehicle
is in motion.
• The light blinks when the engine is
running.
Have an authorized HYUNDAI dealer
inspect the SRS as soon as possible if
any of these conditions occur.
During a frontal collision, sensors will
detect the vehicle’s deceleration. If the
rate of deceleration is high enough, the
control unit will inflate the front air bags.
The front air bags help protect the driver
and front passenger by responding to
frontal impacts in which seat belts alone
cannot provide adequate restraint. When
needed, the side air bags help provide
protection in the event of a side impact
or rollover. •
Air bags are activated (able to inflate
if necessary) when the Engine Start/
Stop button is in the ON position or
approximately within 3 minutes after
ignition off.
• Air bags inflate in the event of certain
frontal or side collisions to help
protect the occupants from serious
physical injury.
• Generally, air bags are designed to
inflate based upon the severity of
a collision, its direction, etc. These
two factors determine whether
the sensors produce an electronic
deployment/inflation signal.
• The front air bags will completely
inflate and deflate in an instant. It is
virtually impossible for you to see the
air bags inflate during an accident. It is
much more likely that you will simply
see the deflated air bags hanging out
of their storage compartments after
the collision.
• In addition to inflating in certain side
collisions, vehicles equipped with a
rollover sensor, side and curtain air
bags will inflate if the sensing system
detects a rollover.
When a rollover is detected, side and
curtain air bags will remain inflated
longer to help provide protection
from ejection, especially when used in
conjunction with the seat belts.
• To help provide protection, the air
bags must inflate rapidly. The speed
of air bag inflation is a consequence
of extremely short time in which
to inflate the air bag between the
occupant and the vehicle structures
before the occupant impacts those
structures. This speed of inflation
reduces the risk of serious or life-
threatening injuries and is thus a
necessary part of air bag design.
However, the rapid air bag inflation
can also cause injuries which can
include facial abrasions, bruises and
broken bones because the inflation
speed also causes the air bags to
expand with a great deal of force.

Cruise Indicator Light ........................................................................\
...................4-18
SPOR T Mode Indicator Light ........................................................................\
........ 4-
18
SMART Mode Indicator Light
........................................................................\
....... 4-

18
Icy Road Warning Light
........................................................................\
................ 4-

19
LCD Display Messages
........................................................................\
.................... 4-

19
Shift to P or N to start engine (for smart key system)
........................................ 4-

19
Shift to P (for smart key system and intelligent variable transmission)
............ 4-

19
Low key battery (for smart key system)...............................................................4-19
Press brake pedal to start engine (for smart key system and intelligent
variable transmission)......................................................................\
.....................4-19
Key not in vehicle (for smart key system)
........................................................... 4-20
K

ey not detected (for smart key system)............................................................ 4-20
Press START button again (for smart key system)
............................................. 4-

20
Battery discharging due to external electrical devices
..................................... 4-

20
Press START button with key (for smart key system)
........................................ 4-

20
Check BRAKE SWITCH fuse (for smart key system and automatic
transmission/intelligent variable transmission)................................................. 4-20
Door, Hood, Trunk Open Indicator....................................................................... 4-21
Sunroof Open
........................................................................\
................................ 4-

21
Low Pressure
........................................................................\
................................. 4-

21
Lights Mode........................................................................\
................................... 4-21
Wiper
........................................................................\
.....................................

.......4-22
Heated Steering Wheel turned off
...................................................................... 4-22
L

ow fuel
........................................................................\
.....................................
...4-22
Engine Overheated
........................................................................\
...................... 4-

22
Check headlight
........................................................................\
........................... 4-

22
Check headlight (Low)
........................................................................\
................ 4-

23
Check turn signal
........................................................................\
......................... 4-

23
Check brake light
........................................................................\
......................... 4-

23
Check daytime running light
........................................................................\
....... 4-

23
Check high mounted stop lamp
........................................................................\
. 4-

23
Check headlight LED
........................................................................\
................... 4-

23
Check Forward Collision-Avoidance Assist system
........................................... 4

-24
Check Lane Keeping Assist system
.................................................................... 4-2

4
Check Blind-Spot Collision Warning system...................................................... 4-24
Check Driver Attention Warning system
............................................................ 4

-24
Check High Beam Assist system
........................................................................\
. 4

-24
Check Smart Cruise Control system
................................................................... 4-2

4
4

LCD Display (Type A) ........................................................................\
............4-25LCD Display Control ........................................................................\
....................... 4-25
L CD display modes........................................................................\
......................... 4-26Trip computer mode
........................................................................\
.................... 4-

27
Turn By Turn (TBT) mode
........................................................................\
............ 4-

27
Driving Assist mode
........................................................................\
..................... 4-

27
Master warning mode
........................................................................\
................. 4-

28
User settings mode
........................................................................\
........................ 4-

29
Trip Computer........................................................................\
................................. 4-36 Trip modes
........................................................................\
.................................... 4-

36
Average fuel economy/Instant fuel economy
................................................... 4-

36
Accumulated Info display
........................................................................\
............ 4-

37
Drive Info display
........................................................................\
......................... 4-

38
Digital speedometer
........................................................................\
.................... 4-

38
Auto Stop accumulated time
........................................................................\
...... 4-

38
Smart shift
........................................................................\
.................................... 4-

39
LCD display (Type B) ........................................................................\
...........4-40LCD Display Control ........................................................................\
....................... 4-40
View modes ........................................................................\
..................................... 4-4
1
Utility group
........................................................................\
.................................... 4-42
Utility It

ems
........................................................................\
.................................. 4-42
Driving Assis

t group
........................................................................\
..................... 4-43
Na

vigation group
........................................................................\
......................... 4-43
Driving in

fo. group
........................................................................\
....................... 4-43
W

arning message group
........................................................................\
............. 4-44
U

ser settings mode
........................................................................\
........................ 4-44
Cruise Indicator Light ........................................................................\
................... 4-18
SPORT Mode Indicator Light ........................................................................\
........ 4-18
SMART Mode Indicator Light ........................................................................\
....... 4-18
Icy Road Warning Light ........................................................................\
................ 4-19
LCD Display Messages ........................................................................\
.................... 4-19
Shift to P or N to start engine (for smart key system) ........................................ 4-19
Shift to P (for smart key system and intelligent variable transmission) ............ 4-19
Low key battery (for smart key system)...............................................................4-19
Press brake pedal to start engine (for smart key system and intelligent
variable transmission)......................................................................\
.....................4-19
Key not in vehicle (for smart key system) ...........................................................4-20
Key not detected (for smart key system)............................................................ 4-20
Press START button again (for smart key system) ............................................. 4-20
Battery discharging due to external electrical devices ..................................... 4-20
Press START button with key (for smart key system) ........................................ 4-20
Check BRAKE SWITCH fuse (for smart key system and automatic
transmission/intelligent variable transmission)................................................. 4-20
Door, Hood, Trunk Open Indicator....................................................................... 4-21
Sunroof Open ........................................................................\
................................ 4-21
Low Pressure ........................................................................\
................................. 4-21
Lights Mode........................................................................\
................................... 4-21
Wiper ........................................................................\
............................................ 4-22
Heated Steering Wheel turned off ...................................................................... 4-22
Low fuel ........................................................................\
........................................ 4-22
Engine Overheated ........................................................................\
...................... 4-22
Check headlight ........................................................................\
........................... 4-22
Check headlight (Low) ........................................................................\
................ 4-23
Check turn signal ........................................................................\
......................... 4-23
Check brake light ........................................................................\
......................... 4-23
Check daytime running light ........................................................................\
....... 4-23
Check high mounted stop lamp ........................................................................\
. 4-23
Check headlight LED ........................................................................\
................... 4-23
Check Forward Collision-Avoidance Assist system ........................................... 4-24
Check Lane Keeping Assist system .................................................................... 4-24
Check Blind-Spot Collision Warning system...................................................... 4-24
Check Driver Attention Warning system ............................................................ 4-24
Check High Beam Assist system ........................................................................\
. 4-24
Check Smart Cruise Control system ................................................................... 4-24
4. Instrument Cluster
4

04
4-9
Transmission shift indicator
Intelligent variable transmission
shift indicator (if equipped)
OIG046112
OCN7040013N
„„Type A
„
„Type B
This indicator displays which shift button
position is selected.
Warning and Indicator Lights
Information
Make sure that all warning lights are OFF
after starting the engine. If any light is still
ON, this indicates a situation that needs
attention.
Air Bag Warning Light
This warning light illuminates:
• When you place the ignition switch to
the ON position.
- The air bag warning ligh

t illuminates
for about 6 seconds and then turns
off when all checks have been
performed
• The air bag warning light will remain
illuminated if there is a malfunction
with the Safety Restraint System (SRS)
air bag operation.
In this case, have the vehicle
inspected by an authorized HYUNDAI
dealer.
Seat Belt Warning Light
This warning light informs the driver that
the seat belt is not fastened.
For more information, refer to “Seat
Belts” in chapter 3.

Instrument Cluster
4-10
Parking Brake & Brake Fluid
Warning Light
This warning light illuminates:
• When you place the ignition switch to
the ON position.
- The parking brak

e light illuminates
for about 3 seconds and will then
turn off once the parking brake is
released.
• Whenever the parking brake is
applied.
• Whenever the brake fluid level in the
reservoir is low.
- If the warning ligh

t illuminates
with the parking brake released, it
indicates that the brake fluid level in
the reservoir is low.
If the brake fluid level in the reservoir is
low:
1.
Drive car

efully to the nearest safe
location and stop your vehicle.
2.
With the engine st

opped, check
the brake fluid level immediately
and add fluid as required (For more
information, refer to "Brake Fluid" in
chapter 9). After adding brake fluid,
check all brake components for fluid
leaks. If a brake fluid leak is found, or
if the warning light remains on, or if
the brakes do not operate properly, do
not drive the vehicle. Have the vehicle
inspected by an authorized HYUNDAI
dealer. Dual-diagonal braking system
Your vehicle is equipped with dual-
diagonal braking systems. This means
you still have braking on two wheels even
if one of the dual systems should fail.
With only one of the dual systems
working, more than normal pedal travel
and greater pedal pressure is required to
stop the vehicle.
If the brakes fail while you are driving,
shift to a lower gear for additional engine
braking and stop the vehicle as soon as it
is safe to do so.
WARNING
Parking Brake & Brake Fluid Warning
Light
Driving the vehicle with a warning light
ON is dangerous. If the Parking Brake &
Brake Fluid Warning Light illuminates
with the parking brake released, it
indicates that the brake fluid level is
low.
In this case, have the vehicle inspected
by an authorized HYUNDAI dealer.

04
4-13
Charging System Warning
Light
When this warning light illuminates while
the engine is running, the battery is not
being charged. Immediately turn OFF
all electrical accessories. Try not to use
electrically operated controls, such as
the power windows. Keep the engine
running.
Have the vehicle inspected by an
authorized HYUNDAI dealer as soon as
possible.
Engine Oil Pressure Warning
Light
This warning light illuminates:
When the engine oil pressure is low.
If the engine oil pressure is low:
1.
Drive car
efully to the nearest safe
location and stop your vehicle.
2.
Turn the engine o

ff and check
the engine oil level (For more
information, refer to "Engine Oil" in
chapter 8). If the level is low, add oil
as required.
If the warning light remains on after
adding oil or if oil is not available, have
the vehicle inspected by an authorized
HYUNDAI dealer as soon as possible.
NOTICE
• If the engine is not turned OFF
immediately after the Engine
Oil Pressure Warning Light is
illuminated, severe damage could
occur.
• If the warning light stays on while the
engine is running, it indicates that
there may be serious engine damage
or malfunction. In this case:
1.
St

op the vehicle as soon as it is
safe to do so.
2.
Turn o

ff the engine and check the
oil level. If the oil level is low, fill
the engine oil to the proper level.
3.
Start the engine again. I

f the
warning light stays on after the
engine has started, turn the
engine off immediately. In this
case, have the vehicle inspected
by an authorized HYUNDAI dealer.
Low Fuel Level Warning Light
This warning light illuminates:
When the fuel tank is nearly empty. Add
fuel as soon as possible.
NOTICE
Driving with the Low Fuel Level warning
light on or with the fuel level below "E"
can cause the engine to misfire and
damage the catalytic converter.