2018 Hyundai Ioniq Hybrid Inverter

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

8-6
Specifications & Consumer information
RECOMMENDED LUBRICANTS AND CAPACITIES
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.
These lubricants and fluids are recommended for use in your vehicle.
Lubricant Volume Classification
Engine oil *
1*2Recommends
(drain and refill)3.8 l
(4.0 US qt.)5W-30
ACEA A5/B5
Dual clutch transmission fluid1.6 ~ 1.7 l
(1.69 ~ 1.79 US qt.)SAE 70W, API GL-4
HK SYN DCTF 70W (SK)
SPIRAX S6 GHME 70W DCTF (H.K.SHELL)
GS DCTF HD 70W (GS CALTEX)
Engine clutch actuator fluid100 ± 20 cc
(0.105 ± 0.021 US qt.)DOT 3
Engine coolant6.7 l(7.07 US qt.)
Mixture of antifreeze and water
(Phosphate-based Ethylene glycol coolant for aluminum radiator)
Inverter coolant3.2 l(3.38 US qt.)
Brake fluid0.7~0.8 l
(0.74~0.85 US qt.)FMVSS116 DOT-3 or DOT-4
FuelHybrid vehicle45 l(47.5 US qt.)
Refer to “Fuel requirements” in the Introduction chapter.
Plug-in hybrid vehicle43 l(45.4 US qt.)
*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 economy 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.

I-4
ISOFIX anchorage and top-tether anchorage
for children.................................................................2-42
Rearward-facing child restraint system .....................2-39
Securing a child restraint system seat with
"Top-tether Anchorage" system ...............................3-44
Securing a child restraint system with
a lap/shoulder belt....................................................3-46
Securing a child restraint system with the
"ISOFIX Anchorage System"................................2-43
Selecting a child restraint system (CRS) ...................2-39
Child-protector rear door lock ......................................3-16
Cigarette lighter ..........................................................3-152
Clean air......................................................................3-144
Climate control air filter ...............................................7-33
Clock ...........................................................................3-152
Clothes hanger ............................................................3-153
Coasting guide ..............................................................5-26
Combined instrument, see instrument cluster ..............3-45
Compact spare tire replacement ...................................7-47
Coolant..........................................................................7-25
Cooling fluid, see engine coolant/inverter coolant ......7-25
Crankcase emission control system..............................7-92
Cruise control system ...................................................5-73
Cup holder ..................................................................3-147
Curtain air bags.............................................................2-58Dashboard illumination, see instrument panel
illumination.................................................................3-47
Dashboard, see instrument cluster ................................3-45
Day/night rearview mirror ............................................3-23
Daytime running light (DRL) .....................................3-111
Defogging (Windshield) .............................................3-140
Defroster .....................................................................3-142
Rear window defroster.............................................3-143
Defrosting (Windshield) .............................................3-140
Dimensions .....................................................................8-2
Display illumination, see instrument panel
illumination.................................................................3-47
Displays, see instrument cluster ...................................3-45
Distance to empty (for cluster type B) .........................3-52
Door locks.....................................................................3-12
Auto door lock/unlock features .................................3-16
Central door lock switch ............................................3-14
Child-protector rear door lock ...................................3-16
Drinks holders, see cup holders..................................3-147
Driver position memory system ...................................3-18
Recalling memory positions ......................................3-19
Storing memory positions ..........................................3-18
Driver's air bag .............................................................2-54
Driver's knee airbag ......................................................2-54
Driving at night.............................................................5-97
Driving in flooded areas ...............................................5-98
Driving in the rain ........................................................5-97
Index
D

I-8
Interior overview ............................................................1-4
Inverter coolant .............................................................7-25
Jack and tools ...............................................................6-20
Jump starting ..............................................................6-6, 9
Label
Air conditioner compressor label ................................8-9
Tire sidewall labeling.................................................7-48
Tire specification and pressure label ...........................8-9
Vehicle certification label ............................................8-8
Lane keeping assist system (LKAS) ............................5-62
Lap/shoulder belt ..........................................................2-29
LCD display..................................................................3-71
Assist mode................................................................3-91
Information mode ......................................................3-84
LCD display modes .............................................3-82, 89
SCC/LKAS mode ......................................................3-84
Trip computer mode ............................................3-83, 90
Turn By Turn (TBT) mode ..................................3-83, 91
User settings mode ..............................................3-86, 92
Warning mode ............................................................3-92
LCD display control .....................................................3-81
LCD display messages .................................................3-66
LCD display modes ................................................3-82, 89Light............................................................................3-104
Auto light position ...................................................3-107
Battery saver function ..............................................3-111
Daytime running light (DRL) ..................................3-111
Headlamp delay function .........................................3-111
Headlamp leveling device........................................3-112
Headlamp position ...................................................3-108
High beam operation ...............................................3-108
Position lamp position .............................................3-108
Rear fog lamp...........................................................3-110
Rear fog lamp...........................................................3-110
Turn signals..............................................................3-109
Light bulbs ....................................................................7-67
Lubricants and capacities ...............................................8-6
Luggage compartment lamp .......................................3-115
Luggage net (holder) ..................................................3-154
Luggage volume .............................................................8-5
Main fuse ......................................................................7-56
Maintenance
Explanation of scheduled maintenance items............7-21
Maintenance services ...................................................7-5
Maintenance under severe usage conditions .......7-13, 19
Normal maintenance service .................................7-9, 15
Owner maintenance .....................................................7-6
Scheduled maintenance services .................................7-8
Tire maintenance........................................................7-48
Index
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