2020 Hyundai Ioniq Hybrid fuel

H2
H HE
EV
V
(
(H
HY
YB
BR
RI
ID
D
E
EL
LE
EC
CT
TR
RI
IC
C
V
VE
EH
HI
IC
CL
LE
E)
)
S
SY
YS
ST
TE
EM
M



Hybrid Vehicle
The HYUNDAI Hybrid Electric Vehicle (HEV) uses both the petrol engine and the electric motor for power. The electric
motor is run by a 270V 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 at idle, or when the vehicle is driven by the electric motor with the HEV bat-
tery.
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

H32
What Does Regenerative
Braking Do?
It uses an electric motor when decel-
erating and when braking and trans-
forms kinetic energy to electrical
energy in order to charge the high
voltage battery.
Battery
Hybrid
- The vehicle is composed of a
high voltage battery that drives
the motor and air conditioner, and
an integrated 12V lithium ion
polymer battery with the HEV
battery that drives the lamps,
wipers, and audio system.
- The integrated 12V battery is auto-
matically charged when the vehicle
is in the ready ( ) mode.
Plug-in hybrid vehicle
- The vehicle is composed of a
high voltage battery that drives
the motor and air-conditioner,
and an auxiliary battery (12 V)
that drives the lamps, wipers, and
audio system.
- The auxiliary battery is automati-
cally charged when the vehicle is
in the ready ( ) mode.
Hybrid System Gauge
The hybrid system gauge indicates
whether the current driving condition
is fuel efficient or not.
CHARGE :
Shows that the energy made by
the vehicle is being converted
to electrical energy. (Regenerated
energy)
ECO :
Shows that the vehicle is being
driven in an Eco-friendly manner.
POWER :
Shows that the vehicle is exceeding
the Eco-friendly range.
D DR
RI
IV
VI
IN
NG
G
T
TH
HE
E
H
HY
YB
BR
RI
ID
D/
/P
PL
LU
UG
G-
-I
IN
N
H
HY
YB
BR
RI
ID
D
V
VE
EH
HI
IC
CL
LE
E
(
(C
CO
ON
NT
T.
.)
)
For safety reasons, do not turn
off the VESS system. If you are
in a situation that the system
needs to be turned off, check
whether there are pedestrians
around the vehicle.
WARNING
OAEPHQ048008/OAEPHQ048802
■Type A■Type B

H40
Refuel to prevent Hybrid battery
damage
This message is displayed when the
fuel tank is nearly empty.
You should refill the fuel tank to pre-
vent hybrid battery damage.
Refill inverter coolant
This message is displayed when the
inverter coolant is nearly empty.
You should refill the inverter coolant.
Check regenerative brakes/
Stop vehicle and check regen.
brakes
This warning message is displayed
when the regenerative brake system
does not work properly.
In this case, we recommend that you
have the vehicle inspected by an
authorised HYUNDAI dealer.
D DR
RI
IV
VI
IN
NG
G
T
TH
HE
E
H
HY
YB
BR
RI
ID
D/
/P
PL
LU
UG
G-
-I
IN
N
H
HY
YB
BR
RI
ID
D
V
VE
EH
HI
IC
CL
LE
E
(
(C
CO
ON
NT
T.
.)
)
OAEPHQ049824L
OAEPHQ049825L
OAEPHQ049827L/OAEPHQ049826L

H43
Remaining time
(Plug-in hybrid vehicle)
This message is displayed to notify
the remaining time to fully charge the
battery.
Wait until fuel door opens
(Plug-in hybrid vehicle)
This message is displayed when you
attempt to open the fuel filler door
with the fuel tank pressurized. Wait
until the fuel tank is depressurized.
Information
It may take up to 20 seconds to open
fuel filler door.
Check fuel door
(Plug-in hybrid vehicle)
This message is displayed when
there is a problem with the fuel filler
door. Such as, when the fuel filler
door does not open after 20 seconds
at freezing temperature.
Information
When the fuel filler door is frozen and
does not open after 20 seconds at
freezing temperature, slightly tap the
fuel filler door and then attempt to
open it. In other cases, we recommend
that you have your vehicle inspected
by an authorised HYUNDAI dealer.
i
i
OAEPHQ049818LOAEPHQ049830LOAEPHQ049831L

H44
Fuel door open
(Plug-in hybrid vehicle)
This message is displayed when the
fuel filler door opens after the fuel
tank is depressurized. If this mes-
sage is displayed, you can refuel the
fuel tank.
Shift to P to charge
(Plug-in hybrid vehicle)
This message is displayed when the
charging connector is plugged with
the shift lever in R (Reverse), N
(Neutral) or D (Drive). Move the shift
lever to P (Park) and re-start the
charging process.
Switching to Hybrid mode to
allow heating or air condition-
ing (Plug-in hybrid vehicle)
This message is displayed when the
vehicle automatically switches to
HEV mode to allow heating or air
conditioning. It is when the coolant
temperature is low (below -14°C)
and the driver turns on the heating or
cooling system.
If the coolant temperature gets high-
er than -14°C or the driver turns off
the heating or cooling system the
vehicle returns to its default (EV)
mode.
D DR
RI
IV
VI
IN
NG
G
T
TH
HE
E
H
HY
YB
BR
RI
ID
D/
/P
PL
LU
UG
G-
-I
IN
N
H
HY
YB
BR
RI
ID
D
V
VE
EH
HI
IC
CL
LE
E
(
(C
CO
ON
NT
T.
.)
)
OAEPHQ049832LOAEPHQ049833LOAEPHQ049842L

H56
If an Accident Occurs(Continued)
Using small amount of water
or fire extinguishers not
meant for electrical fires
could cause serious injury or
death from electrical shocks.
Upon witnessing any sparks,
gases, flames, or fuel leakage
of your vehicle, immediately
call emergency services or
contact an authorised
HYUNDAI dealer. Also, advise
them that a hybrid vehicle is
involved.
S SA
AF
FE
ET
TY
Y
P
PR
RE
EC
CA
AU
UT
TI
IO
ON
NS
S
F
FO
OR
R
H
HY
YB
BR
RI
ID
D
S
SY
YS
ST
TE
EM
M
(
(C
CO
ON
NT
T.
.)
)
(Continued)
When the vehicle is severely
damaged, remain a safe dis-
tance of 15 metre or more
between your vehicle and other
vehicles/flammables.
If a fire occurs :
If a small scale fire occurs,
use a fire extinguisher (ABC,
BC) that is meant for electrical
fires.
If it is impossible to extin-
guish the fire in the early
stage, remain a safe distance
from the vehicle and immedi-
ately call your local fire emer-
gency responders. Also,
advise them that a hybrid
vehicle is involved.
If the fire spreads to the high
voltage battery, large amount
of water is needed to put out
the fire.
(Continued)
WARNING
For your safety, do not touch
high voltage cables, connec-
tors and package modules.
High voltage components are
orange in colour.
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 flamma-
ble. Upon witnessing one of
those, open the windows, and
remain a safe distance from
the vehicle out of the road.
Immediately call an emergency
services or contact an autho-
rised HYUNDAI dealer and
advise them that a hybrid vehi-
cle is involved.
(Continued)
WARNING

H57
When the Hybrid Vehicle Shuts
Off
When the high voltage battery is dis-
charged, when the 12-volt battery is
discharged, or when the fuel tank is
empty, the hybrid system may not
operate whilst driving. When the
Hybrid system does not operate, do
the followings:
1.Gradually reduce the vehicle
speed. Pull over your vehicle off
the road in a safe area.
2. Locate the shift lever in P (Park).
3. Turn ON the hazard warning flashers.
4.Turn OFF the vehicle, and try to
start the hybrid system again,
whilst depressing the brake pedal
and turning on the ignition switch.5.When the hybrid system still does
not operate, refer to "If the 12 Volt
Battery Is Discharged" in chapter 6.
Before jump-starting the vehicle,
check the fuel level and the exact
procedure to jump start. For further
details, refer to "If the 12 Volt
Battery Is Discharged" in the chap-
ter 6. When the fuel level is low, do
not attempt to drive the vehicle only
with the battery power. The high
voltage battery may be discharged,
and the hybrid system will turn OFF.When a submersion in water
occurs:
When your vehicle is flooded in
water, a high-voltage battery
may cause shock or fires. Thus,
turn the hybrid system OFF, take
the key in your possession and
escape to a safe place. Never
attempt physical contact with
your flooded vehicle.
Immediately contact an autho-
rised HYUNDAI dealer and
advise them that a hybrid vehicle
is involved.
WARNING

F2
Your Hyundai should not be modified in any way without the approval of Hyundai. Any mod-
ifications may adversely affect the safety, durability and performance of your Hyundai. In
addition, those components which are subjected to modification or are added to the vehicle
specification, and any resultant consequential damage will not be covered by the vehicle
manufacturer's warranty.
Your vehicle is equipped with electronic fuel injection and other electronic components.
It is possible for an improperly installed/adjusted two-way radio or mobile phone to adversely
affect electronic systems. For this reason, we recommend that you carefully follow the radio
manufacturer's instructions or consult your Hyundai dealer for precautionary measures or
special instructions.
CAUTION: MODIFICATIONS TO YOUR HYUNDAI
TWO-WAY RADIO OR MOBILE TELEPHONE INSTALLATION