2020 Hyundai Ioniq Plug-in Hybrid 12 volt battery

6-44
What to do in an emergency
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For your safety, do not touch
high voltage cables, connec-
tors and package modules.
High voltage components are
orange in color.
Exposed cables or wires may
be visible inside or outside of
the vehicle. Never touch the
wires or cables, because an
electrical shock, an injury, or a
death may occur.
Any gas or electrolyte leakage
from your vehicle is not only
poisonous but also flammable.
Upon witnessing one of those,
open the windows, and remain
a safe distance from the vehi-
cle out of the road. Immediately
contact an authorized Hyundai
dealer and advise them that a
hybrid vehicle is involved.
If you need towing, refer to
"Towing" in the previous pages.
(Continued)
(Continued)
When the vehicle is severely
damaged, remain a safe dis-
tance of 50 feet (15 meter) or
more between your vehicle
and other vehicles/flamma-
bles.
WARNING
If a fire occurs :
Upon witnessing any sparks,
gases, flames, or fuel leakage of
your vehicle, immediately call
911 or contact an authorized
HYNDAI dealer. Also, advise
them that a hybrid vehicle is
involved.
WARNING
When a submersion in water
occurs:
When your vehicle is flooded in
water, a high-voltage battery
may cause shock or may catch
on fire. Thus, turn the hybrid
system OFF, take the key in
your possession and move to a
safe place. Never attempt phys-
ical contact with your flooded
vehicle. Immediately contact an
authorized HYUNDAI dealer and
advise them that a hybrid vehi-
cle is involved.
WARNING

7
Maintenance
7
Maintenance
Engine Compartment .............................................7-3
Maintenance Services ...........................................7-5
Owner's Responsibility .....................................................7-5
Owner Maintenance Precautions..................................7-5
Owner Maintenance ..............................................7-6
How to Disconnect the (-) Cable for Regular
Maintenance (Hybrid vehicle) ........................................7-7
Owner Maintenance Schedule .......................................7-7
Scheduled Maintenance Services........................7-8
Normal Maintenance Schedule ......................................7-9
Maintenance Under Severe Usage Conditions ........7-12
Severe driving conditions..............................................7-13
Explanation of Scheduled Maintenance
Items ......................................................................7-14
Engine Oil ..............................................................7-16
Checking the Engine Oil Level .....................................7-16
Checking the Engine Oil and Filter .............................7-17
Engine Coolant/Inverter Coolant .......................7-18
Checking the Coolant Level ..........................................7-18
Changing Coolant ............................................................7-21
Hybrid Starter & Generator (HSG) Belt ...........7-21
Checking the Hybrid Starter &
Generator (HSG) Belt .....................................................7-21
Brake Fluid ............................................................7-22
Checking the Brake Fluid Level ...................................7-22
Washer Fluid .........................................................7-23
Checking the Washer Fluid Level................................7-23
Parking Brake .......................................................7-23
Checking the Parking Brake .........................................7-23
Air Cleaner ............................................................7-24
Filter Replacement ..........................................................7-24
Climate Control Air Filter ....................................7-26
Filter inspection ...............................................................7-26
Wiper Blades.........................................................7-28
Blade inspection ..............................................................7-28
Blade Replacement .........................................................7-28
Battery (12 Volt, Plug-In Hybrid Vehicle) ........7-31
For Best Battery Service ..............................................7-32
Battery Recharging ........................................................7-32
Reset Features.................................................................7-33
Tires and Wheels .................................................7-34
Tire Care ............................................................................7-34
Recommended Cold Tire Inflation Pressures ...........7-35
Check Tire Inflation Pressure ......................................7-36
Tire Rotation.....................................................................7-377

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7-31
7
Maintenance
To prevent SERIOUS INJURY or
DEATH to you or bystanders,
always follow these precautions
when working near or handling
the battery:
Always read and follow
instructions carefully
when handling a battery.
Wear eye protection
designed to protect the
eyes from acid splashes.
Keep all flames, sparks,
or smoking materials
away from the battery.
Hydrogen is always pres-
ent in battery cells, is
highly combustible, and
may explode if ignited.
Keep batteries out of
reach of children.
(Continued)
WARNING (Continued)
Batteries contain sulfu-
ric acid which is highly
corrosive. Do not allow
acid to contact your
eyes, skin or clothing.
If acid gets into your eyes, flush
your eyes with clean water for at
least 15 minutes and get imme-
diate medical attention. If acid
gets on your skin, thoroughly
wash the area. If you feel pain or
a burning sensation, get med-
ical attention immediately.
When lifting a plastic-cased
battery, excessive pressure
on the case may cause battery
acid to leak. Lift with a battery
carrier or with your hands on
opposite corners.
Do not attempt to jump start
your vehicle if your battery is
frozen.
(Continued)
(Continued)
NEVER attempt to recharge
the battery when the vehicle’s
battery cables are connected
to the battery.
The electrical ignition system
works with high voltage.
NEVER touch these compo-
nents with the engine running
or when the Engine Start/Stop
button is in the ON position.

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HEV (Hybrid Electric Vehicle) System..................H2
Hybrid Vehicle ......................................................................H2
PHEV (Plug-In Electric Vehicle) System..............H3
Plug-in Hybrid Vehicle.......................................................H3
Charging the Plug-In Hybrid Vehicle....................H4
Charging Information .........................................................H4
Charging Types ....................................................................H4
Charging Time Information ...............................................H4
Charging Status ...................................................................H5
Charging Connector AUTO / LOCK Mode.....................H6
Scheduled Charging ............................................................H7
Charging Precautions .........................................................H8
AC Charge .............................................................................H9
Trickle Charge ....................................................................H15
Action to be taken when charging stops abruptly...H27
Driving the Hybrid/Plug-In Hybrid Vehicle .......H28
Starting the Vehicle ..........................................................H28
Special Features ................................................................H29
Hybrid System Gauge ......................................................H31
Plug-in Hybrid Mode (Plug-in hybrid vehicle)..........H32
Aux. Battery Saver+ (Plug-in hybrid vehicle) ...........H33
Warning and Indicator Lights ........................................H35
LCD Display Messages.....................................................H36
Energy flow ........................................................................H45
Safety Precautions For Hybrid System .............H49
High Voltage Battery System.........................................H49
Safety Plug .........................................................................H52
High Voltage Battery Cooling Duct ..............................H53
If an Accident Occurs ......................................................H54
When the Hybrid Vehicle Shuts Off ............................H55

H2
Hybrid Vehicle H HE
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The HYUNDAI Hybrid Electric Vehicle (HEV) uses both the gasoline engine and the electric motor for power. The elec-
tric motor is run by a high-voltage HEV battery.
Depending on the driving conditions, the HEV computer selectively operates between the engine and the electric motor
or even both at the same time.
Fuel efficiency increases when the engine is off at idle, or when the vehicle is driven by the electric motor with the HEV
battery.
The HEV battery charge must be maintained, so at times the engine will come on even at idle to act as a generator.
Charging also occurs when decelerating or by regenerative braking.
OAE056066 Startup/Low speed cruise
Electric motor
Acceleration
Electric motor + Engine
High speed cruise
Engine
Deceleration
Charging
Stop
Engine OFF

H4
Charging Information
•AC Charge :
The plug-in hybrid vehicle is
charged by plugging into a AC
charger installed in your home or a
public charging station. (For further
details, refer to the 'AC Charge'.)Trickle Charge :
The plug-in hybrid vehicle can be
charged by using household elec-
tricity. The electrical outlet in your
home must comply with regulations
and can safely accommodate the
Voltage / Current (Amps) / Power
(Watts) ratings specified on the
portable charge.
Charging Time Information
AC Charge :
Takes approximately 2 hours 15
minutes at room temperature. (Can
be charged to 100%.)
• Trickle Charge :
For charging at home. Please note
that Trickle Charger is slower than
the AC Charger.
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Charging Types
CategoryCharging Inlet
(Vehicle)Charging ConnectorCharging OutletHow to ChargeCharging Time
AC Charge
Use AC charger
installed in homes
or public charging
stationApprox. 2 hours
15 minutes (to fully
charge, 100%)
Trickle
Charge Use household
current
For charging at
home. Please note
that Trickle Charger
is slower than the AC
Charger.
Depending on the condition and durability of the high voltage battery, charger specifications, and ambient
temperature, the time required for charging the high voltage battery may vary.
Actual charger image and charging method may vary in accordance with the charger manufacturer.
OLFP0Q5006K OAEEQ016020
OAEEQ016020OAEEQ016024 OLFP0Q4057N
OLFP0Q5006K

H5
Charging Status
When charging the high voltage bat-
tery, the charge level can be checked
from outside the vehicle.
OAEEQ016025
Operation of Charging Indicator LampDetails(1)(2)(3)
(OFF)(OFF)(OFF)Not Charged
Blink(OFF)(OFF)
Charging
0~33%
(ON)Blink(OFF)34~66%
(ON)(ON)Blink67~99%
(ON)(ON)(ON)Fully charged (100%) (turns OFF in 5 seconds)
BlinkBlinkBlinkError while charging
(OFF)(OFF)BlinkCharging the 12 V auxiliary battery
(Aux. Battery Saver+)
(OFF)Blink(OFF)
- Reserved charging is operating
(turns OFF after 3 minutes)
- Charging is temporarily interrupted
(e.g. power failure)

H11
Information
Charging connector AUTO/LOCK
mode
The charging connector is locked in
the inlet at a different period accord-
ing to which mode is selected.
• LOCK mode : The connector locks
when the charging connector is
plugged into the charging inlet.
• AUTO mode : The connector locks
when charging starts.
For more details, refer to "Charging
Connector AUTO/LOCK Mode" in
this chapter.6. Connect the charging plug to the
electric outlet at a AC charging
station to start charging.7. Check if the charging indicator
light of the high voltage battery on
the instrument cluster is turned
ON. Charging is not done when
the charging indicator lamp is
OFF.
When the charging connector and
charging plug are not connected
properly, reconnect the charging
cable to charge.
i
OLFP0Q4057N
■ AC Charger
OAEPHQ018032/OAEPHQ048804
■Type A■Type B