2018 Hyundai Ioniq Plug-in Hybrid fuel

7-75
7
Maintenance
Canister
Fuel vapors generated inside the fuel
tank are absorbed and stored in the
onboard canister. When the engine is
running, the fuel vapors absorbed in
the canister are drawn into the surge
tank through the purge control sole-
noid valve.
Purge Control Solenoid Valve(PCSV)
The purge control solenoid valve is
controlled by the Engine Control
Module (ECM); when the engine
coolant temperature is low during
idling, the PCSV closes so that evap-
orated fuel is not taken into the
engine. After the engine warms-up
during ordinary driving, the PCSV
opens to introduce evaporated fuel to
the engine.
3. Exhaust Emission Control System
The Exhaust Emission Control
System is a highly effective system
which controls exhaust emissions
while maintaining good vehicle per-
formance.
When the engine starts or fails to
start, excessive attempts to restart
the engine may cause damage to the
emission system.
Engine exhaust (carbon monox-
ide) precautions
Carbon monoxide can be present
with other exhaust fumes. If you
smell exhaust fumes of any kind in
your vehicle, drive with all the win-
dows fully open. Have your vehicle
checked and repaired immediately.
Engine exhaust gases contain
carbon monoxide (CO). Though
colorless and odorless, it is
dangerous and could be lethal if
inhaled. Follow the instructions
on this page to avoid CO poi-
soning.
WARNING

Your vehicle is equipped with a cat-
alytic converter emission control
device.
To prevent damage to the catalytic
converter and to your vehicle, take
the following precautions:
Use only UNLEADED FUEL forgasoline engines.
Do not operate the vehicle when there are signs of engine malfunc-
tion, such as misfire or a noticeable
loss of performance.
Do not misuse or abuse the engine. Examples of misuse are
coasting with the engine off and
descending steep grades in gear
with the engine off.
Do not operate the engine at high idle speed for extended periods (5
minutes or more). Do not modify or tamper with any
part of the engine or emission con-
trol system. All inspections and
adjustments must be made by an
authorized HYUNDAI dealer.
Avoid driving with extremely low fuel level. If you run out of gasoline,
it could cause the engine to misfire
and result in excessive loading of
the catalytic converter.
Maintenance
7
7-77
7

8-7
88
Specifications, Consumer information and Reporting safety defects
To help achieve proper engine and powertrain performance and durability, use only lubricants of the proper quality.
The correct lubricants also help promote engine efficiency that results in improved fuel economy.
R RE
EC
CO
O M
M M
ME
EN
N D
DE
ED
D
L
L U
U B
BR
RI
IC
C A
A N
N T
TS
S
A
A N
N D
D
C
C A
A P
PA
A C
CI
IT
T I
IE
E S
S
LubricantVolume Classification
Engine oil *
1*2(drain and refill)
Recommends
4.0 US qt. (3.8 l)0W-20 (SAE Viscosity Number),
API SN (or above) or ACEA C2 *3
Dual clutch transmission fluid1.69 ~ 1.79 US qt. (1.6 ~ 1.7
l)
HK SYN DCTF 70W (SK)
SPIRAX S6 GHME 70W DCTF (H.K.SHELL)
GS DCTF HD 70W (GS CALTEX)
(API GL-4, SAE 70W)
Engine clutch actuator fluid0.08 ~ 0.13 US qt. (80 ~ 120 cc)FMVSS116 DOT3
Engine coolant7.07 US qt. (6.7 l)Mixture of antifreeze and water
(Phosphate-based Ethylene glycol coolant for
aluminum radiator)
Inverter coolant3.38 US qt. (3.2 l)
Brake fluid0.74~0.85 US qt. (0.7 ~ 0.8 l)FMVSS116 DOT-3 or DOT-4
FuelHybrid vehicle11.9 US gal. (45 l)Refer to "Fuel requirements" in the Foreword
chapter.
Plug-in hybrid vehicle11.4 US gal. (43 l)
*1: Refer to the recommended SAE viscosity numbers on the next page.
*2: Engine oils labeled Energy Conserving Oil are now available. Along with other additional benefits, they contribute to fuel econ -
omy by reducing the amount of fuel necessary to overcome engine friction. Often, these improvements are difficult to measure
in everyday driving, but in a year's time, they can offer significant cost and energy savings.
*
3: If the ACEA C2 engine oil is not available in your country, you are able to use ILSAC GF-3 (or above) or ACEA A3 (or above).

8-8
Specifications, Consumer information and Reporting safety defects
Recommended SAE Viscosity
Number
Always be sure to clean the area
around any filler plug, drain
plug, or dipstick before check-
ing 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.
CAUTION
Temperature Range for SAE Viscosity Numbers
Temperature -30 -20 -10 0 10 20 30 40 50
-10 0 20 40 60 80 100 120
Engine Oil *1
°C
(°F)
*1: For better fuel economy, it is recommended to use the engine oil of a viscosity grade SAE 0W-20 (API SN (or above) or ACEA
C2). However, if the engine oil is not available in your country,
select the proper engine oil using the engine oil viscosity chart.
10W-30
0/5W-20, 0/5W-30
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.

H2
Hybrid Vehicle H
H
E
EV
V
(
( H
H Y
Y B
BR
RI
ID
D
E
E L
LE
E C
CT
T R
R I
IC
C
V
V E
EH
H I
IC
C L
LE
E )
)
S
S Y
Y S
ST
T E
EM
M
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

H28
D
DR
RI
IV
V I
IN
N G
G
T
T H
H E
E
H
H Y
Y B
BR
RI
ID
D /
/P
P L
LU
U G
G-
-I
IN
N
H
H Y
Y B
BR
RI
ID
D
V
V E
EH
H I
IC
C L
LE
E
(
( C
C O
O N
NT
T.
.)
)
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. According to the hybrid system
gauge area, the "EV" indicator comes
on or off.
- "EV" indicator ON : Vehicle is driven
using the electric motor or the
gasoline engine is stopped.
- "EV" indicator OFF : Vehicle is driv- en using the gasoline engine.
Hybrid Battery SOC (State of Charge) Gauge
This gauge indicates the remaining
hybrid battery power. If the SOC is
near the "L (Low)" level, the vehicle
automatically operates the engine to
charge the battery.
However, if the Service Indicator ( )
and Malfunction Indicator Lamp (MIL)
( ) turn on when the SOC (State of
charge) gauge is near the "L (Low)"
level, have the vehicle checked by an
authorized HYUNDAI dealer.
OAEQ046008
OAEQ046009/OAEPH046522
■ Hybrid vehicle■Plug-in hybrid vehicle

H34
D
DR
RI
IV
V I
IN
N G
G
T
T H
H E
E
H
H Y
Y B
BR
RI
ID
D /
/P
P L
LU
U G
G-
-I
IN
N
H
H Y
Y B
BR
RI
ID
D
V
V E
EH
H I
IC
C L
LE
E
(
( C
C O
O N
NT
T.
.)
)
Stop vehicle and check power
supply
This message is displayed when a
failure occurs in the power supply
system.
In this case, park the vehicle in a
safe location and tow your vehicle to
the nearest authorized HYUNDAI
dealer and have the vehicle inspect-
ed.
Stop vehicle to charge battery/Park with engine On to chargebattery
Either message is displayed when
the hybrid battery power (SOC) level
is low.
In this case, park the vehicle in a
safe location and wait until the hybrid
battery is charged.
You can increase the hybrid battery
charging rate by holding the acceler-
ator pedal to the floor with transmis-
sion in P. The engine will rev high but
it will be limited for charging purpose
when you hold the pedal to the floor.
Refuel to prevent Hybrid batterydamage
This message is displayed when the
fuel tank is nearly empty.
You should refill the fuel tank to pre-
vent hybrid battery damage.
OLFH044230LOLFH044242L
OLFH044232L/OAEPH047561N

H37
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)
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, have your vehi-
cle inspected by an authorized
HYUNDAI dealer.
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.
ii
OAEPH047201L
OAEPH047526L
OAEPH047525L