cooling Hyundai Ioniq Electric 2018 User Guide

6-7
What to do in an emergency
6
4. Check for coolant leaking from theradiator, hoses or under the vehi-
cle. (If the air conditioning had
been in use, it is normal for cold
water to be draining from it when
you stop.)
5. If coolant is leaking out, stop the vehicle immediately and call the
nearest authorized HYUNDAI
dealer for assistance. 6. If you cannot find the cause of the
overheating, wait until the radiator
temperature has returned to nor-
mal. Then, if coolant has been
lost, carefully add coolant to the
reservoir to bring the fluid level in
the reservoir up to the halfway
mark.
7. Proceed with caution, keeping alert for further signs of overheat-
ing. If overheating happens again,
call an authorized HYUNDAI deal-
er for assistance.
While the vehicle is
running, keep hands,
clothing and tools
away from the mov-
ing parts such as the
cooling fan to prevent
serious injury.
WARNING
Serious loss of coolant indi-
cates a leak in the cooling sys-
tem and should be checked as
soon as possible by an author-
ized HYUNDAI dealer.
CAUTION
Your vehicle is
equipped with a pres-
surized coolant
reserve tank. NEVER
remove the coolant
reserve tank cap or the radiator
drain plug while the radiator is
HOT. Hot coolant and steam
may blow out under pressure,
causing serious injury.
Turn the vehicle off and wait
until the vehicle cools down.
Use extreme care when remov-
ing the coolant reserve tank
cap. Wrap a towel or thick rag
around it, and turn it counter-
clockwise slowly to release
some of the pressure from the
system. Step back while the
pressure is released.
When you are sure all the pres-
sure has been released, contin-
ue turning the cap counter-
clockwise to remove it.
WARNING

7-8
Maintenance
Normal Maintenance Schedule
Months4812162024283236404448525660646872768084889296
Miles×1,0005101520253035404550556065707580859095100105110115120
Km×1,00081624324048566472808896104112120128136144152160168176184192
Inspect cooling systemIIIIIIII
Rotate Tires
(Includes Tire Pressure and
Tread Wear Inspection)
IIIIIIIIIIIIIIIIIIIIIIII
Replace Climate Control Air
Filter (For Evaporator and
Blower Unit)
RRRRRRRR
Replace coolant *1*2
(1stReplace 120,000 miles or
96 months)
(Thereafter, Replace 30,000
miles / 24 months)
R
Inspect 12V battery conditionIIIIIIII
Inspect brake lines, hoses, and
connectionsIIIIIIII
Inspect disc brakes and padsIIIIIIII
Maintenance Intervals
Maintenance
Item
I : Inspect (Inspect and if necessary, adjust, correct, clean, or replace)
R : Replace or change.
*
1: When adding coolant, use only deionized water or soft water for your vehicle and never mix hard water in the coolant filled at the factory. An improper coolant mixture can result in serious malfunction or vehicle damage.
*
2: For your convenience, it can be replaced prior to it's interval when you do maintenance of other items.

7-11
7
Maintenance
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Cooling System
Check cooling system components,
such as radiator, coolant reservoir,
hoses and connections for leakage
and damage. Replace any damaged
parts.
Coolant
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.
Reduction Gear Fluid
Inspect the reduction gear fluid
according to the maintenance sched-
ule.
Brake Hoses and Lines
Visually check for proper installation,
chafing, cracks, deterioration and
any leakage. Replace any deteriorat-
ed or damaged parts immediately.
Brake Fluid
Check brake fluid level in the brake
fluid reservoir. The level should be
between the MIN and the MAX
marks on the side of the reservoir.
Use only hydraulic brake fluid con-
forming to DOT 3 or DOT 4 specifi-
cation.
Brake Discs, Pads, Calipers
and Rotors
Check the pads for excessive wear,
discs for run out and wear, and
calipers for fluid leakage.
Suspension Mounting Bolts
Check the suspension connections
for looseness or damage. Retighten
to the specified torque.
Steering Gear Box, Linkage &
Boots/Lower Arm Ball Joint
With the vehicle stopped and the
vehicle off, check for excessive free-
play in the steering wheel. Check the
linkage for bends or damage. Check
the dust boots and ball joints for
deterioration, cracks, or damage.
Replace any damaged parts.
Drive Shafts and Boots
Check the drive shafts, boots and
clamps for cracks, deterioration, or
damage. Replace any damaged
parts and, if necessary, repack the
grease.
Air Conditioning Refrigerant
Check the air conditioning lines and
connections for leakage and dam-
age.

7-12
Maintenance
C
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The high-pressure cooling system
has a reservoir filled with year-round
antifreeze coolant. The reservoir is
filled at the factory.
Check the antifreeze protection and
coolant level at least once a year, at
the beginning of the winter season
and before traveling to a colder cli-
mate.Checking the Coolant Level
Check the condition and connections
of all cooling system hoses and
heater hoses. Replace any swollen
or deteriorated hoses.
The coolant level should be filled
between the MAX and the MIN
marks on the side of the coolant
reservoir when the parts in the motor
compartment is cool.
If the coolant level is low, add enough
distilled (deionized) water to bring
the level to the MAX mark, but do not
overfill. If frequent additions are
required, you see an authorized
HYUNDAI dealer for a cooling sys-
tem inspection.
Recommended coolant
When adding coolant, use only
distilled (deionized) water for your
vehicle and never mix hard water in
the coolant filled at the factory.
An improper coolant mixture can result in severe malfunction or
electric vehicle damage.
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.
OAEE076002L

7-13
7
Maintenance
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
- 31°F and higher.
i
Ambient
Temperature Mixture Percentage
(volume)
Antifreeze Water
5°F (-15°C) 35 65
-13°F (-25°C) 40 60
-31°F (-35°C) 50 50
-49°F (-45°C) 60 40
Never remove the
coolant cap or the
drain plug while the
radiator is hot. Hot
coolant and steam
may blow out under pressure,
causing serious injury.
(Continued)
WARNING
OAEE076002
(Continued)
Turn the vehicle off and wait
until the parts in the motor com-
partment cools down. Use
extreme care when removing
the 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 counterclock-
wise to remove it.

7-14
Maintenance
The electric motor for the cooling fan
is controlled by coolant temperature,
refrigerant pressure and vehicle
speed. As the coolant temperature
decreases, the electric motor will
automatically shut off. This is a nor-
mal condition. The electric motor for
the cooling fan may
continue to operate
or start up when the
vehicle 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.
1. Check if the coolant cap label is straight In front.
(Continued)
WARNING
OTL075062
■Motor compartment front view
(Continued)
2. Make sure that the tiny pro-
trusions inside the coolant
cap is securely interlocked.
OAEE076044L
■Motor compartment rear view

7-52
Maintenance
Motor compartment fuse panel
Fuse NameFuse RatingProtected Component
MAIN180AEPCU (Low Voltage DC-DC Converter), E/R Junction Block (Fuse - H/LAMP HI,
POWER OUTLET1, AHB2, AHB1)
MDPS80AMDPS Unit
REAR
HEATED150AE/R Junction Block (Rear Defogger Relay)
BLOWER40AE/R Junction Block (Blower Relay)
B+360AIGPM (Fuse - ARISU (4CH), IPS (1CH/2CH))
B+450AIGPM (Fuse - P/WINDOW LH/RH, TAILGATE OPEN, SUNROOF, AMP, CHARGER, OBC,
S/HEATER FRT, P/SEAT DRV)
C/FAN60AE/R Junction Block (Cooling Fan Relay)
B+260AIGPM (Fuse - S/HEATER RR, ARISU (4CH), IPS (2CH))
IG140AE/R Junction Block (Button Start #1 (ACC) Relay, Button Start #2 (IG1) Relay)
IG240AE/R Junction Block (Button Start #2 (IG2) Relay)
E-SHIFTER40AE/R Junction Block (Fuse - E-SHIFTER2, E-SHIFTER Relay)
B+560APCB Block (Fuse - EPCU1, HORN, B/A HORN, BMS, Main Relay)

I-3
Battery (12 volt)..............................................................7-23Battery recharging ......................................................7-24
Battery cooling duct........................................................2-22
Battery saver function .....................................................3-97
Before driving ...................................................................5-3
Blind Spot Detection (BSD) system ...............................5-38
Blue Link
®center ...........................................................3-19
Bluetooth®Wireless Technology hands-free ....................4-4
Bottle holder .................................................................3-125
Brake fluid ......................................................................7-\
16
Brake system ...................................................................5-17 Anti-lock Brake System (ABS)..................................5-27
Auto hold ....................................................................5-23\
Disc brakes wear indicator .........................................5-18
Electronic Parking Brake (EPB) ................................5-18
Electronic Stability Control (ESC).............................5-29
Good braking practices ..............................................5-37
Hill-start Assist Control (HAC) .................................5-34
Power brakes ..............................................................5-17
Vehicle Stability Management (VSM) .......................5-33 Bulb replacement ............................................................7-55
Daytime running lamp................................................7-60
Front parking lamp .....................................................7-56
Front turn signal lamp ................................................7-56
Headlamp....................................................................7-56\
High mounted stop lamp ............................................7-62
Interior light bulb .......................................................7-66
License plate light bulb ..............................................7-63
Rear combination light bulb .......................................7-61
Side marker ................................................................7-56
Side repeater lamp ......................................................7-61
Bulb wattage .....................................................................8-3\
Camera (Rear view) ......................................................3-105
Capacities (Lubricants) .....................................................3-6
Care Exterior care ...............................................................7-65
Interior care ................................................................7-70
Tire care ......................................................................7-\
26
Cargo security screen ....................................................3-131
Center console storage ..................................................3-123
Central door lock switch .................................................3-11
Certification label .............................................................8-7
Chains Tire chains ..................................................................5-92
I
Index
B
C

I-4
Charging door .................................................................3-50
Checking tire inflation pressure ......................................7-28
Child restraint system (CRS) ..........................................2-36Booster seats...............................................................2-39
Forward-facing child restraint system........................2-39
Installing a child restraint system (CRS) ...................2-39
Lower anchors and tether for children (LATCH system) .....................................................2-40
Rearward-facing child restraint system......................2-38
Securing a child restraint system seat with "Tether Anchor" system ..........................................2-43
Securing a child restraint system with a lap/ shoulder belt ............................................................2-44
Securing a child restraint system withthe LATCH anchors system ........................................................2-42
Selecting a child restraint system (CRS) ...................2-37
Child-protector rear door lock ........................................3-12
Climate control air filter replacement.............................7-18
Clock ........................................................................\
.....3-129
Clothes hanger ..............................................................3-130
Combined instrument, see instrument cluster ................3-51
Consumer information ......................................................8-9
Coolant ........................................................................\
....7-12
Cooling fluid, see coolant ...............................................7-12
Cruise control system .....................................................5-67
Cup holder.....................................................................3-1\
25
Curtain air bags ...............................................................2-51 Dashboard illumination, see instrument panel
illumination..................................................................3-52
Dashboard, see instrument cluster ..................................3-51
Day/night rearview mirror ..............................................3-19
Daytime running light (DRL) .........................................3-94
Defogging (Windshield) ...............................................3-120
Defroster .......................................................................3\
-106 Rear window defroster .............................................3-106
Defrosting (Windshield) ...............................................3-120
Dimensions .......................................................................8\
-2
Display illumination, see instrument panel illumination..................................................................3-52
Displays, see instrument cluster .....................................3-51
Distance to empty ...........................................................3-55
Door locks ........................................................................\
.3-9 Auto door lock/unlock features ..................................3-12
Central door lock switch ............................................3-11
Child-protector rear door lock....................................3-12
Drinks holders, see cup holders ....................................3-125
Drive mode integrated control system ............................5-36 ECO mode ..................................................................5-36
SPORT mode ..............................................................5-37
Driver position memory system .....................................3-14 Easy access function ..................................................3-15
Recalling memory positions .......................................3-15
Storing memory positions ..........................................3-14
Index
D

I-11
One person per belt ....................................................2-34
Periodic inspection .....................................................2-35
Pre-tensioner seat belt ................................................2-29
Rear center seatbelt ....................................................2-32
Seat belt restraint system............................................2-25
Seat belt safety precautions ........................................2-23
Seat belt use and children...........................................2-3\
3
Seat belt use during pregnancy ..................................2-32
Seat belt warning light ...............................................2-24
Transporting an injured person ..................................2-34
When to replace seat belts..........................................2-35
Seat warmers Front ........................................................................\
...2-20
Rear ........................................................................\
....2-22
Seats ........................................................................\
..........2-4 Battery cooling duct ...................................................2-22
Front seat adjustment ...................................................2-6
Front seat warmers .....................................................2-20
Head restraints ............................................................2-16
Rear seat adjustment ..................................................2-12
Rear seat warmers ......................................................2-22
Safety precautions ........................................................2-5
Shift lever auto door lock ...............................................3-12
Shift-lock system ............................................................5-12
Side air bags....................................................................2-50\
Side view mirrors............................................................3-34 Blind spot mirror ........................................................3-34 Smart key ........................................................................\
..3-3
Battery replacement......................................................3-7
Liftgate unlocking ........................................................3-5
Locking........................................................................\
.3-3
Mechanical key ............................................................3-6
Panic button ..................................................................3-5
Unlocking .....................................................................3-4\
Smooth cornering............................................................5-90
Snow tires .......................................................................5\
-92
SOC (State of Charge) gauge .........................................3-54
Special driving conditions Driving at night ..........................................................5-90
Driving in flooded areas .............................................5-91
Driving in the rain ......................................................5-90
Hazardous driving conditions ....................................5-89
Highway driving.........................................................5-91
Rocking the vehicle ....................................................5-89
Smooth cornering .......................................................5-90
Speed sensing door lock .................................................3-12
Speedometer....................................................................3-52\
SPORT mode ..................................................................5-37
Steering wheel Heated steering wheel ................................................3-17
Horn ........................................................................\
....3-17
Power steering ............................................................3-16
Power Steering (EPS) .................................................3-16
Tilt steering/Telescope steering ..................................3-16
I
Index