2020 Hyundai Ioniq Hybrid coolant

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

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

H45
Maintaining Hybrid mode to
allow heating or air condition-
ing (Plug-in hybrid vehicle)
This message is displayed when the
vehicle maintains the HEV mode to
allow heating or air conditioning. The
mode does not change when the
driver presses the [HEV] button to
switch from the HEV mode to EV
mode whilst the heating and cooling
system is on and the coolant temper-
ature is below -14°C.
Low/High System Temp.
Maintaining Hybrid mode
(Plug-in hybrid vehicle)
This message is displayed when the
temperature of the high-voltage
(hybrid) battery is too low or too high.
This warning message is to protect
the battery and the hybrid system.
Low/High System Temp.
Switching to Hybrid mode
(Plug-in hybrid vehicle)
This message is displayed when the
temperature of the high-voltage
(hybrid) battery is too low or high.
This warning message is to protect
the battery and the hybrid system.
OAEPHQ049841LOAEPHQ049834L/OAEPHQ049835LOAEPHQ049836L/OAEPHQ049837L

1-7
Your vehicle at a glance
1
E EN
NG
GI
IN
NE
E
C
CO
OM
MP
PA
AR
RT
TM
ME
EN
NT
T
-
-
H
HY
YB
BR
RI
ID
D
V
VE
EH
HI
IC
CL
LE
E
OAE078001
■ ■Petrol Engine (1.6 GDI)
1. Engine coolant reservoir....................7-19
2. Engine coolant cap ............................7-20
3. Inverter coolant reservoir ..................7-19
4. Brake fluid reservoir ..........................7-23
5. Air cleaner ........................................7-25
6. Engine oil dipstick..............................7-17
7. Engine oil filler cap ............................7-18
8. Windscreen washer fluid reservoir ....7-24
9. Fuse box ............................................7-47
The actual engine compartment in the vehicle may differ from the illustration.

1-13
Your vehicle at a glance
1
E EN
NG
GI
IN
NE
E
C
CO
OM
MP
PA
AR
RT
TM
ME
EN
NT
T
-
-
P
PL
LU
UG
G-
-I
IN
N
H
HY
YB
BR
RI
ID
D
V
VE
EH
HI
IC
CL
LE
E
■ ■Petrol Engine (1.6 GDI)
1. Engine coolant reservoir....................7-19
2. Engine coolant cap ............................7-20
3. Inverter coolant reservoir ..................7-19
4. Brake fluid reservoir ..........................7-23
5. Air cleaner ........................................7-25
6. Engine oil dipstick..............................7-17
7. Engine oil filler cap ............................7-18
8. Windscreen washer fluid reservoir ....7-24
9. Fuse box ............................................7-47
The actual engine compartment in the vehicle may differ from the illustration.

3-62
Convenient features of your vehicle
If the engine does not stop
immediately after the Engine Oil
Pressure Warning Light is illumi-
nated, severe damage could
result.
If the warning light stays on
whilst the engine is running, it
indicates that there may be seri-
ous engine damage or malfunc-
tion. In this case:
1. Stop the vehicle as soon as it
is safe to do so.
2. Turn off 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. If the
warning light stays on after the
engine is started, turn the
engine off immediately. In this
case, we recommend that you
have the vehicle inspected by
an authorised HYUNDAI deal-
er.
Low Fuel Level
Warning Light
This warning light illuminates:
When the fuel tank is nearly empty.
Add fuel as soon as possible.
Driving with the Low Fuel Level
warning light on or with the fuel
level below "0 or E" can cause the
engine to misfire and damage the
catalytic converter (if equipped).
Engine Coolant
Temperature Warning
Light
This warning light illuminates:
When the engine coolant tempera-
ture is above 120°C (248°F). This
means that the engine is overheat-
ed and may be damaged.
If your vehicle is overheated, refer
to “Overheating” in chapter 6.
Overspeed Warning
Light (if equipped)
This warning light blinks:
When you drive the vehicle more
than 120 km/h.
- This is to prevent you from driving
your vehicle with overspeed.
- The overspeed warning chime
also sounds for approximately 5
seconds.
NOTICE
NOTICE
120km/h

3-70
Convenient features of your vehicle
Key not detected
(for smart key system)
This warning message is displayed if
the smart key is not detected when you
press the Engine Start/Stop button.
Press START button again
(for smart key system)
This message is displayed if you
were unable to start the vehicle when
the Engine Start/Stop button was
pressed.
If this occurs, attempt to start the
engine by pressing the Engine
Start/Stop button again.
If the warning message appears
each time you press the Engine
Start/Stop button, we recommend
that you have your vehicle inspected
by an authorised HYUNDAI dealer.
Press START button with key
(for smart key system)
This warning message is displayed if
you press the Engine Start/Stop but-
ton whilst the warning message “Key
not detected” is displayed.
At this time, the immobiliser indicator
light blinks.
Check BRAKE SWITCH fuse
(for smart key system)
This warning message is displayed if
the brake switch fuse is disconnected.
You need to replace the fuse with a
new one before starting the engine.
If that is not possible, you can start the
engine by pressing the Engine
Start/Stop button for 10 seconds in the
ACC position.
Shift to P to start vehicle
(for smart key system)
This warning message is displayed if
you try to start the engine with the
shift lever not in the P (Park) position.
Low Washer Fluid (if equipped)
This warning message is displayed
if the washer fluid level in the reser-
voir is nearly empty.
Have the washer fluid reservoir
refilled.
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 fuelling station and refuel as
soon as possible.
Add fuel as soon as possible.
Engine has overheated
This warning message is displayed
when the engine coolant tempera-
ture is above 120°C (248°F). This
means that the engine is overheated
and may be damaged.
If your vehicle is overheated, refer
to "Overheating" in chapter 6.

3-76
Convenient features of your vehicle
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.
Stop vehicle and check regen.
brakes
This message is displayed when a
failure occurs in the brake system.
In this case, park the vehicle in a
safe location and recommend that
you tow your vehicle to the nearest
authorised HYUNDAI dealer and
have the vehicle inspected.
OAEPHQ049824L
OAEPHQ049825L
OAEPHQ049826L