2021 HYUNDAI ELANTRA HYBRID engine overheat

Foreword / Hybrid System Overview
1-22
NOTICE
• When the vehicle is paint baked, do
not bake over 30 minutes in 158°F
(70°C) or 20 minutes in 176°F (80°C)
degree.
• Do not wash the engine
compartment, using water. Water
may cause an electric shock and
damage the electronic components.
WARNING
This hybrid vehicle uses the hybrid
battery system inverter and converter
to generate high voltage. High voltage
in the hybrid battery system is very
dangerous and may cause severe burns
and electric shock. This may result in
serious injury or death.
• For your safety, never touch,
replace, disassemble or remove the
hybrid battery system including
components, cables and connectors.
Severe burns or electric shock may
result in serious injury or death when
you fail to follow this warning.
• When the hybrid battery system
operates, the hybrid battery system
can be hot. Always be careful
because burns or electric shock may
be caused by high voltage.
• Do not spill liquid on the HPCU, HSG,
motor and fuses. If the hybrid system
components come in contact with
liquid, it may result in electric shock.
Service Interlock Connector
OCN7HQ010001
In case of emergency, cut the service
interlock connector cable to isolate the
high voltage of the battery.
WARNING
Never disconnect the service interlock
connector or cut the wire except in an
emergency situation.
Serious problems may occur, such as
the vehicle will not start.
Hybrid Battery Cooling Duct
OCN7HQ010002
The hybrid battery cooling duct is
located on the middle side of the rear
seats. The cooling duct cools down the
hybrid battery. When the hybrid battery
cooling duct is blocked, the hybrid
battery may be overheated.
Clean the cooling duct for the hybrid
battery with a dry cloth on a regular
basis.

High Beam Assist indicator light ........................................................................\
..4-18
Forward Collision-Avoidance Assist Warning Light ............................................4-18
Lane Keep Assist Indicator Light ........................................................................\
.. 4-19
Cruise Indicator Light
........................................................................\
...................4-19
SPORT Mode Indicator Light ........................................................................\
........4-19
SMART Mode Indicator Light ........................................................................\
.......4-19
Icy Road Warning Light ........................................................................\
................4-19
LCD Display Messages ........................................................................\
...................4-20
Shift to P or N to start engine (for smart key system) .......................................4-20
Shift to P (for smart key system and intelligent variable transmission) ...........4-20
Low key battery (for smart key system) ..............................................................4-20
Press brake pedal to start engine (for smart key system and intelligent
variable transmission)........................................................................\
.................. 4-20
Press clutch pedal to start engine (for smart key system and manual
transmission)
........................................................................\
................................4-20
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
12V battery discharging due to additional electrical devices ...........................4-21
Press START button with key (for smart key system) .........................................4-21
Check BRAKE SWITCH fuse (for smart key system and automatic
transmission/intelligent variable transmission) ..................................................4-21
Door, Hood, Trunk Open Indicator ....................................................................... 4-21
Sunroof Open
........................................................................\
................................4-21
Low Pressure ........................................................................\
................................4-22
Lights Mode ........................................................................\
.................................. 4-22
Wiper
........................................................................\
............................................4-22
Heated Steering Wheel turned off ......................................................................4-22
Low washer fluid ........................................................................\
..........................4-22
Low fuel ........................................................................\
........................................4-23
Engine Overheated ........................................................................\
......................4-23
Check headlight (if equipped) ........................................................................\
....4-23
Check headlight (Low) ........................................................................\
................4-23
Check turn signal ........................................................................\
.........................4-23
Check brake light ........................................................................\
.........................4-23
Check daytime running light ........................................................................\
.......4-24
Check high mounted stop lamp ........................................................................\
.4-24
Check headlight LED ........................................................................\
...................4-24
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
............................................................4-25
4

04
4-23
Low fuel
This warning message is displayed if the
fuel tank is almost out of fuel.
When this message is displayed, the low
fuel level warning light in the cluster will
come on.
It is recommended to look for the nearest
fueling station and refuel as soon as
possible.
Engine Overheated (if equipped)
This warning message is displayed
when the engine coolant temperature
is above 248°F (120°C). This means that
the engine is overheated and may be
damaged.
If your vehicle is overheated, refer to
“Overheating” in chapter 8.
Check headlight (if equipped)
This warning message is displayed if the
headlamps are not operating
properly.
In addition, if a specific lamp(turn signal
lamp etc.) is not operating properly, the
warning message according to a specific
lamp (turn signal lamp etc.) is displayed.
A corresponding bulb may need to be
replaced.
Make sure to replace the burned out
bulb with a new one of the same wattage
rating.
Check headlight (Low) (if equipped)
This warning message is displayed if
the headlamp (Low) are not operating
properly.
In addition, if a specific lamp(turn signal
lamp etc.) is not operating properly, the
warning message according to a specific
lamp (turn signal lamp etc.) is displayed.
A corresponding bulb may need to be
replaced.
Make sure to replace the burned out
bulb with a new one of the same wattage
rating
Check turn signal (if equipped)
This warning message is displayed if the
turn signal lamps are not operat-
ing properly. A lamp may need to be
replaced.
Make sure to replace the burned out
bulb with a new one of the same wattage
rating.
Check brake light (if equipped)
This warning message is displayed if the
stop lamps are not operating properly. A
lamp may need to be replaced.
Make sure to replace the burned out
bulb with a new one of the same wattage
rating.

Convenient Features
5-94
Air conditioning
HYUNDAI Air Conditioning Systems are
filled with R-1234yf refrigerant.
1. Start the vehicle.
2. Push the air conditioning button.
3. Select the Face Level mode.
4. Set the air intake control to
Recirculation mode temporarily to
allow the cabin to cool quickly. When
the desired temperature in the cabin
is reached, change the air intake
control back to Fresh mode.
5. Adjust the fan speed control and
temperature control to maintain
maximum comfort.
Information
Your vehicle is filled with R-1234yf
according to the regulation in your
country at the time of production. You can
find out which air conditioning refrigerant
is applied to your vehicle on the label
located inside of the hood.
NOTICE
• The refrigerant system should only
be serviced by trained and certified
technicians to insure proper and safe
operation.
• The refrigerant system should be
serviced in a well-ventilated place.
• The air conditioning evaporator
(cooling coil) shall never be repaired
or replaced with one removed from
a used or salvaged vehicle and new
replacement MAC evaporators shall
be certified (and labeled) as meeting
SAE Standard J2842.
Information
• When using the air conditioning
system, monitor the temperature
gauge closely while driving up hills
or in heavy traffic when outside
temperatures are high. Air conditioning
system operation may cause engine
overheating. Continue to use the blower
fan but turn the air conditioning system
off if the temperature gauge indicates
engine overheating.
• When opening the windows in humid
weather, air conditioning may create
water droplets inside the vehicle. Since
excessive water droplets may cause
damage to electrical equipment, air
conditioning should only be used with
the windows closed.

05
5-105
CAUTION
To prevent damage to the Power
Outlets:
• Use the power outlet only when the
engine is running and remove the
accessory plug after use. Using the
accessory plug for prolonged periods
of time with the engine off could
cause the battery to discharge.
• Only use 12V electric accessories
which are less than 15 A in electric
capacity.
• Adjust the air-conditioner or heater
to the lowest operating level when
using the power outlet.
• Close the cover when not in use.
• Some electronic devices can
cause electronic interference
when plugged into a vehicle’s
power outlet. These devices may
cause excessive audio static and
malfunctions in other electronic
systems or devices used in your
vehicle.
• Push the plug in as far as it will go. If
good contact is not made, the plug
may overheat and the fuse may open.
• Plug in battery equipped electrical/
electronic devices with reverse
current protection. The current
from the battery may flow into the
vehicle’s electrical/electronic system
and cause system malfunction.
USB Charger
OCN7050069Insert the USB charger into the USB port,
and re-charge a smart phone or a tablet
PC.
• A charging status/charging
completion message is displayed on
a screen of a smart phone or a tablet
PC.
• A smart phone or a tablet PC may
get warmer during the re-charging
process. It does not indicate any
malfunction with the charging system.
• A smart phone or a tablet PC, which
adopts a different re-charging
method, may not be properly re-
charged. In this case, use an exclusive
charger of your device.
• The charging terminal is only to
recharge a device. Do not use the
charging terminal either to turn ON
an audio or to play media on the
infotainment system.

6-14
• If you release your foot from the
accelerator pedal at low vehicle
speed, you may feel strong engine
braking, which is similar to manual
transmission.
• When driving downhill, you may
use Sports Mode to downshift to a
lower gear in order to control your
speed without using the brake pedal
excessively.
• When you turn the engine on and off,
you may hear clicking sounds as the
system goes through a self-test. This
is a normal sound for the dual clutch
transmission.
• During the first 1000 miles (1,500 km),
you may feel that the vehicle may not
be smooth when accelerating at low
speed. During this break-in period, the
shift quality and performance of your
new vehicle is continuously optimized.
WARNING
Due to transmission failure, you may
not continue to drive and the position
indicator (D, R) on the cluster will blink.
We recommend you to contact an
authorized HYUNDAI dealer and have
the system checked.
LCD display for transmission
temperature and warning
message
DCT warning messages
OTLE055019
This warning message is displayed when
vehicle is driven slowly on a grade and
the vehicle detects that the brake pedal
is not applied.
Steep grade
Driving up hills or on steep grades:
• To hold the vehicle on an incline use
the foot brake or the parking brake.
• When in stop-and-go traffic on an
incline, keep some distance ahead
before moving the vehicle forward.
Then hold the vehicle on the incline
with the foot brake.
• If the vehicle is held on a hill by
applying the accelerator pedal
or by creeping with brake pedal
disengaged, the clutch and
transmission may overheat which
can result in damage. At this time, a
warning message will appear on the
LCD display.
• If the LCD warning is active, the foot
brake must be applied.
• Ignoring the warnings can lead to
damage to the transmission.
Driving your vehicle

06
6-15
OJS058139L
Transmission high temperature
• Under certain conditions, such as
repeated stop-and-go launches
on steep grades, sudden take off
or acceleration, or other harsh
driving conditions, the transmission
clutch temperatures will increase
excessively. Finally the clutch in
transmission could be overheated.
• When the clutch is overheated, the
safe protection mode engages and
the gear position indicator on the
cluster blinks with a chime. At this
time, “Transmission temperature is
high! Stop safely” warning message
will appear on the LCD display and
driving may not be smooth. •
If this occurs, pull over to a safe
location, stop the vehicle with the
engine running, apply the brakes and
shift the vehicle to P (Park), and allow
the transmission to cool.
• If you ignore this warning, the driving
condition may become worse.
You may experience abrupt shifts,
frequent shifts, or jerkiness. To return
to the normal driving condition, stop
the vehicle and apply the foot brake
or shift into P (Park). Then allow the
transmission to cool for a few minutes
with engine on, before driving off.
• When possible, drive the vehicle
smoothly.
OJS058137LOAD058176N
OAD058177N

6-16
Transmission overheated
• If the vehicle continues to be driven
and the clutch temperatures reach
the maximum temperature limit, the
"Transmission hot! Park with engine
On" warning will be displayed. When
this occurs the clutch is disabled
until the clutch cools to normal
temperatures.
• The warning will display a time to wait
for the transmission to cool.
• If this occurs, pull over to a safe
location, stop the vehicle with the
engine running, apply the brakes and
shift the vehicle to P (Park), and allow
the transmission to cool.
• When the message "Transmission
cooled down. Resume driving"
appears you can continue to drive
your vehicle.
• When possible, drive the vehicle
smoothly.
If any of the warning messages in the
LCD display continue to blink, for your
safety, we recommend you contact an
authorized HYUNDAI dealer and have the
system checked.Transmission ranges
The indicator in the instrument cluster
displays the shift lever position when the
ignition switch is in the ON position.
P (Park)
Always come to a complete stop before
shifting into P (Park).
To shift from P (Park), you must depress
firmly on the brake pedal and make sure
your foot is off the accelerator pedal.
If you have done all of the above and
still cannot shift the lever out of P
(Park), see "Shift-Lock Release" in this
chapter.
The shift lever must be in P (Park) before
turning the engine off.
WARNING
• Shifting into P (Park) while the
vehicle is in motion may cause you to
lose control of the vehicle.
• After the vehicle has stopped, always
make sure the shift lever is in P
(Park), apply the parking brake, and
turn the engine off.
• Do not use the P (Park) position in
place of the parking brake.
Driving your vehicle