2020 HYUNDAI IONIQ cooling

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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 4 specification.
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
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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, have your
vehicle inspected by an authorized
HYUNDAI dealer. Use only designat-
ed coolant water for electric vehicles,
adding other types of water or
antifreeze can damage the vehicle.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.
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Since a specific coolant water is
applied for electric vehicles,
replenishment of other
antifreeze or water may cause
problems to the vehicle.
WARNING
The electric motor for the cool-
ing fan may continue to operate
or start up when the vehicle is
not running and can cause seri-
ous injury. Keep hands, clothing
and tools away from the rotat-
ing fan blades of the cooling
fan.
WARNING

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7
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)

H51
Service Warning Light
This warning light illuminates :
When the POWER button is in the
ON position.
- It illuminates for approximately 3
seconds and then goes off.
When there is a problem with relat-
ed parts of the electric vehicle con-
trol system, such as sensors, etc.
When the warning light illuminates
while driving, or does not go OFF
after starting the vehicle, have your
vehicle inspected by an authorized
HYUNDAI dealer.
Power Down Warning
Light
This warning light illuminates :
When the power is limited for the
safety of the electric vehicle.
The power is limited for the following
reasons.
- The high voltage battery level is
below a certain level or voltage is
decreasing
- The temperature of the motor or
high voltage battery is too high or
too low
- There is a problem with the cooling
system, or a failure that may inter-
rupt normal driving Do not accelerate or start the
vehicle suddenly when the
power down warning light is ON.
When the high voltage battery
level is low, the power down
warning illuminates and the
power output from the vehicle is
limited. Charge the battery
immediately since your vehicle
may not drive uphill or skid on a
slope with the warning light ON.
NOTICE

H57
Power limited
In the following cases, this warning
message is displayed when the vehi-
cle's power is limited for safety.
When the high voltage battery is
below a certain level, or voltage is
decreasing.
When the temperature of the motor
or high voltage battery is too high
or too low.
When there is a problem with the
cooling system or a failure that
may interrupt normal driving. When this warning message is
displayed, do not accelerate or
start the vehicle suddenly.
When the high voltage battery
level is low, the power down
warning illuminates and the
power output from the vehicle is
limited. Charge the battery
immediately since your vehicle
may not drive uphill or skid on a
slope with the warning light ON.
Stop vehicle and check power
supply
This warning message is displayed
when a failure occurs in the power
supply system.
In this case, park the vehicle in a
safe location and recommend that
you tow your vehicle to the nearest
authorized HYUNDAI dealer and
have the vehicle inspected.
NOTICE
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