2018 Hyundai Ioniq Hybrid refill

H36
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 we recommend
that you tow your vehicle to the near-
est authorized HYUNDAI dealer and
have the vehicle inspected.
Stop vehicle to charge battery
This 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 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.
OLFH044232L
OLFH044242L
DRIVING THE HYBRID/PLUG-IN HYBRID VEHICLE (CONT.)
OLFH044230L

H37
Refill inverter coolant
This message is displayed when the
inverter coolant is nearly empty.
You should refill the inverter coolant.
Stop vehicle and check brakes
This message is displayed when a
failure occurs in the brake system.
In this case, park the vehicle in a
safe location and we recommend
that you tow your vehicle to the near-
est authorized HYUNDAI dealer and
have the vehicle inspected.
Check brakes
This message is displayed when the
brake performance is low or the
regenerative brake does not work
properly due to a failure in the brake
system.
In this case, it may take longer for the
brake pedal to operate and the brak-
ing distance may become longer.
OLFH044244LOLFH044234LOLFH044250L

3-69
Convenient features of your vehicle
3
Low Pressure (if equipped)
This warning message is displayed if
the tire pressure is low. The corre-
sponding tire on the vehicle will be
illuminated.
For more information, refer to
"Tire Pressure Monitoring System
(TPMS)" in chapter 6.
Turn on "FUSE SWITCH"
This warning message is displayed if
the fuse switch located on the fuse
box under the steering wheel is OFF.
You should turn the fuse switch on.
For more information, refer to
“Fuses” in chapter 7.
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 fueling 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.
■Type B ■Type A
OAE046114L/OAE046115LOLFH044149L

3-73
Convenient features of your vehicle
Stop vehicle to charge battery
This 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.
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.
3
OLFH044232L
OLFH044242L
OLFH044244L

7-8
Maintenance
SCHEDULED MAINTENANCE SERVICES
At least once a year:
• Clean body and door drain holes.
• Lubricate door hinges and hood
hinges.
• Lubricate door and hood locks and
latches.
• Lubricate door rubber weather
strips.
• Check the air conditioning system.
• Inspect and lubricate dual clutch
transmission linkage and controls.
• Clean the battery and terminals.
• Check the brake fluid level.Follow Normal Maintenance Schedule if the vehicle is usually operated where
none of the following conditions apply. If any of the following conditions apply,
you must follow the Maintenance Under Severe Usage Conditions.
• Repeated driving short distance of less than 8 km (5 miles) in normal tem-
perature or less than 16 km (10miles) in freezing temperature
• Extensive engine idling or low speed driving for long distances
• Driving on rough, dusty, muddy, unpaved, graveled or salt-spread roads
• Driving in areas using salt or other corrosive materials or in very cold
weather
• Driving in heavy dust condition
• Driving in heavy traffic area
• Driving on uphill, downhill, or mountain road repeatedly
• Towing a trailer or using a camper, or roof rack
• Driving as a patrol car, taxi, other commercial use of vehicle towing
• Driving over 170 km/h (106 miles/h)
• Frequently driving in stop-and-go condition
If your vehicle is operated under the above conditions, you should inspect,
replace or refill more frequently than the following Normal Maintenance
Schedule. After the periods or distance shown in the chart, continue to follow
the prescribed maintenance intervals.

7-26
Maintenance
Information
The engine coolant and/or inverter
coolant level is influenced by the
hybrid system temperature. Before
checking or refilling the engine
coolant and/or inverter coolant, turn
the hybrid vehicle off.
i
Never remove the
engine coolant cap
and/or inverter coolant
cap or the drain plug
while the engine and
radiator are hot. Hot coolant and
steam may blow out under pres-
sure, causing serious injury.
Turn the hybrid system off and
wait until the engine cools down.
Use extreme care when remov-
ing the engine coolant cap
and/or inverter coolant cap.
Wrap a thick towel around it, and
turn it counterclockwise slowly
to the first stop. Step back while
the pressure is released from the
cooling system. When you are
sure all the pressure has been
released, press down on the cap,
using a thick towel, and continue
turning counterclockwise to
remove it.
WARNING
OAE076006
OAE076007
■Engine coolant cap
■Inverter coolant cap

7-27
7
MaintenanceThe electric motor for the cooling fan
is controlled by engine coolant tem-
perature, refrigerant pressure and
vehicle speed. As the engine coolant
temperature decreases, the electric
motor will automatically shut off. This
is a normal condition. If your vehicle
is equipped with GDI, the electric
motor for the cooling fan may begin
to operate at any time and continue
to operate until you disconnect the
negative battery cable.The electric motor for
the cooling fan may
continue to operate
or start up when the
engine is not running
and can cause serious injury.
Keep hands, clothing and tools
away from the rotating fan blades
of the cooling fan.
WARNING
Make sure the coolant cap is
properly closed after refilling
coolant. Otherwise the engine
could be overheated while driv-
ing.
1. Check if the coolant cap label
is straight In front.
(Continued)
WARNING
OTL075062
■Engine compartment front view
(Continued)
2. Make sure that the tiny pro-
trusions inside the coolant
cap is securely interlocked.
OAE076050
■Engine compartment rear view

7-28
Maintenance
Recommended coolant
• When adding coolant, use only
deionized water, distilled water or
soft water for your vehicle and
never mix hard water in the coolant
filled at the factory.
• An incorrect coolant mixture can
result in severe malfunction or
engine/hybrid system damage.
• The engine in your vehicle has alu-
minum engine parts and must be
protected by an phosphate-based
ethylene glycol coolant to prevent
corrosion and freezing.
• Do not use alcohol or methanol
coolant or mix them with the spec-
ified coolant.
• Do not use a solution that contains
more than 60% antifreeze or less
than 35% antifreeze, which would
reduce the effectiveness of the
solution.For mixing percentage, refer to the
following table:
Information
If in doubt about the mix ratio, a 50%
water and 50% antifreeze mix is the
easiest to mix together as it will be the
same quantity of each. It is suitable to
use for most temperature ranges of
-35°C (-31°F) and higher.
Changing coolant
We recommend that coolant be
changed by an authorized HYUNDAI
dealer according to the Maintenance
Schedule at the beginning of this
chapter.
To prevent damage to engine parts,
put a thick towel around the engine
coolant cap and/or inverter coolant
cap before refilling the coolant to
prevent the coolant from overflow-
ing into engine parts, such as the
alternator.
NOTICE
i
Ambient
TemperatureMixture Percentage
(volume)
Antifreeze Water
-15°C (5°F) 35 65
-25°C (-13°F) 40 60
-35°C (-31°F) 50 50
-45°C (-49°F) 60 40
Do not use engine coolant or
antifreeze in the washer fluid
reservoir.
Engine coolant can severely
obscure visibility when sprayed
on the windshield and may
cause loss of vehicle control
resulting in an accident.
Engine coolant may also cause
damage to paint and body trim.
WARNING