2019 Hyundai Ioniq Plug-in Hybrid engine coolant

7-16
Maintenance
Recommended coolant
When adding coolant, use onlydistilled (deionized) 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- minium 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 a HYUNDAI authorised
repairer according to the
Maintenance Schedule.
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
generator.
NOTICE
i
Ambient
Temperature Mixture 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 windscreen and may
cause loss of vehicle control
resulting in an accident.
Engine coolant may also cause
damage to paint and body trim.
WARNING

7-19
7
Maintenance
Checking the parking brake
Foot type (if equipped)
Check whether the stroke is within
specification when the parking brake
pedal is depressed with 20 kg (44 lb,
196 N) of force. Also, the parking
brake alone should securely hold the
vehicle on a fairly steep grade. If the
stroke is more or less than specified,
have the parking brake adjusted by a
HYUNDAI authorised repairer.
Stroke : 4~5 notch
Filter replacement
The air cleaner filter can be cleaned
for inspection using compressed air.
Do not attempt to wash or to rinse it,
as water will damage the filter.
If soiled, the air cleaner filter must be
replaced.OAE056014R
P
PA
A R
RK
K I
IN
N G
G
B
B R
RA
A K
KE
E
To prevent serious injury or
death, take the following safety
precautions when using washer
fluid:
Do not use engine coolant or
antifreeze in the washer fluid
reservoir. Engine coolant can
severely obscure visibility
when sprayed on the wind-
screen and may cause loss of
vehicle control resulting in an
accident or damage to paint
and body trim.
Do not allow sparks or flames
to contact the washer fluid or
the washer fluid reservoir.
Washer fluid may contain
alcohol and can be flamma-
ble.
Do not drink washer fluid and
avoid contact with skin.
Washer fluid is poisonous to
humans and animals.
Keep washer fluid away from
children and animals.
WARNING
A A I
IR
R
C
C L
LE
E A
A N
N E
ER
R
OAEPH076010

7-78
Maintenance
1. Crankcase emission controlsystem
The positive crankcase ventilation
system is employed to prevent air
pollution caused by blow-by gases
being emitted from the crankcase.
This system supplies fresh filtered air
to the crankcase through the air
intake hose. Inside the crankcase,
the fresh air mixes with blow-by
gases, which then pass through the
PCV valve into the induction system.
2. Evaporative emission controlsystem
The Evaporative Emission Control
System is designed to prevent fuel
vapours from escaping into the
atmosphere.
Canister
Fuel vapours generated inside the
fuel tank are absorbed and stored in
the onboard canister. When the
engine is running, the fuel vapours
absorbed in the canister are drawn
into the surge tank through the purge
control solenoid 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
whilst 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 monoxide) 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
colourless and odourless, it is
dangerous and could be lethal if
inhaled. Follow the instructions
on this page to avoid CO poi-
soning.
WARNING

8-6
Specifications & Consumer information
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
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
(3.34 lmp. qts.) 5W-30
ACEA A5/B5
Dual clutch transmission fluid 1.6 ~ 1.7 l
(1.41~1.50 lmp. qts.) 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 fluid 100 ± 20 cc
(0.088 ± 0.018 lmp. qts.) DOT 3
Engine coolant 6.7
l(5.90 lmp. qts.)
Mixture of antifreeze and water
(Phosphate-based Ethylene glycol coolant for aluminium radiator)
Inverter coolant 3.2
l(2.82 lmp. qts.)
Brake fluid 0.7~0.8
l
(0.62~0.70 lmp. qts.) FMVSS116 DOT-3 or DOT-4
Fuel Hybrid vehicle
45
l(9.9 lmp. gal)
Refer to “Fuel requirements” in the Introduction chapter.
Plug-in hybrid vehicle 43
l(9.5 lmp. gal)
*1: Refer to the recommended SAE viscosity numbers on the next page.
*2: Engine oils labelled Energy Conserving Oil are now available. Along with other additional benefits, they contribute to fuel eco n-
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.