HYUNDAI IONIQ 5 2023 Repair Manual

Foreword / Electric Vehicle System Overview
1-56
WARNING
ONE1Q011038
When the function is activating the
indicator lamp will illuminate and high
voltage electricity will be flowing in the
vehicle. Do not touch the high voltage
electric wire (orange), connector, and
all electric components and devices.
This may cause electric shock and lead
to injuries. Also, do not modify your
vehicle in any way. This may affect your
vehicle performance and lead to an
accident.
Warning and Indicator Lights
(related to electric vehicle)
Ready indicator
This indicator illuminates:
When the vehicle is ready to be driven.
- ON : Normal driving is possible.
- OFF : Normal driving is not possible, or a problem has occurred.
- Blinking : Emergency driving.
When the ready indicator goes OFF
or blinks, there is a problem with the
system. In this case, have your vehicle
inspected by an authorized HYUNDAI
dealer.
Service Warning Light
This warning light illuminates:
• When the Start/Stop button is in the ON position.
- It illuminates for approximately 3 seconds and then goes off.
• When there is a problem with related
parts of the electric vehicle control
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.

01
1-57
Power Down Warning Light
This warning light illuminates:
• When the Start/Stop button is in the ON position.
- It illuminates for approximately 3 seconds and then goes off.
• When the power is limited for the
safety of the high-powered parts of an
electric vehicle. The power is limited
for the following reasons.(Unless both
Service Warning Light and Power
Down Indicator Light illuminate at the
same time, it is not a failure.)
- The high voltage battery level is too low or voltage is decreasing
- The temperature of the high voltage battery is too high or too low
- The temperature of the motor is high
NOTICE
• Do not accelerate or start the vehicle
suddenly when the power down
warning light is ON.
• When the power is limited for the
safety of the high-powered parts of
an electric vehicle, the power down
indicator light illuminates. your
vehicle may not drive uphill or skid
on a slope with the indicator light ON. Charging Indicator Light
This warning light illuminates:
•
When charging the high voltage
battery.
High Voltage Battery Level
Warning Light
This warning light illuminates:
• When the high voltage battery level
is low.
• When the warning light turns ON,
charge the battery immediately.
Regenerative Brake Warning
Light
This warning light illuminates:
When the regenerative brake does not
operate and the brake does not perform
well. This causes the Brake Warning
light (red) and Regenerative Brake
Warning Light (yellow) to illuminate
simultaneously.
In this case, drive safely and have your
vehicle inspected by an authorized
HYUNDAI dealer.
The operation of the brake pedal may
be more difficult than normal and the
braking distance can increase.

Foreword / Electric Vehicle System Overview
1-58
LCD Display Messages
Shift to P to start charging
OOSEV040497L
This message is displayed if you connect
the charging cable without the gear in
the P (Park) position.
Shift to P (Park) before connecting the
charging cable.
Remaining time
„„AC charge „„DC charge
ONE1Q011058EONE1Q011059E
This message is displayed to notify the
remaining time to charge the battery to
the selected target battery charge level. Unplug vehicle to start
OOSEV040498L
This message is displayed when you
start the vehicle without unplugging the
charging cable. Unplug the charging
cable, and then turn on the vehicle.
OOSEV040499L
This message is displayed when the
vehicle is driven with the charging door
opened. Close the charging door and
then start driving.

01
1-59
Charging Stopped. Check the AC/DC
charger
„„AC charge
„„DC charge
OOSEV040500LOOSEV040501L
• This warning message is displayed
when charging is stopped for the
reasons below:
- There is a problem with the external AC charger or DC charger
- The external AC charger stopped charging
- The charging cable is damaged
In this case, check whether there is any
problem with the external AC or DC
charger and charging cable.
If the same problem occurs when
charging the vehicle with a normally
operating AC charger or genuine
HYUNDAI portable charger, have your
vehicle inspected by an authorized
HYUNDAI dealer. Charging Stopped. Check the cable
connectionOOSEV040502L
This warning message is displayed
when charging is stopped because the
charging connector is not correctly
connected to the charging inlet
In this case, separate the charging
connector and re-connect it and check
whether there is any problem (external
damage, foreign substances, etc.) with
the charging connector and charging
inlet.
If the same problem occurs when
charging the vehicle with a replaced
charging cable or genuine HYUNDAI
portable charger, have your vehicle
inspected by an authorized HYUNDAI
dealer.
Check regenerative brakes
OOSEV040503E
This warning message is displayed when
the regenerative brake system does not
work properly.
In this case, have the vehicle inspected
by an authorized HYUNDAI dealer.

Foreword / Electric Vehicle System Overview
1-60
Low EV battery
OOSEV040505L
When the high voltage battery level
reaches below approximately 10%, this
warning message is displayed.
The warning light on the instrument
cluster (
) will turn ON simultaneously.
Charge the high voltage battery
immediately.
Charge immediately. Power limited
OOSEV040506L
When the high voltage battery level
reaches below approximately 0%, this
warning message is displayed.
The warning light on the instrument
cluster (
) and the power down
warning light () will turn on
simultaneously.
The vehicle’s power will be reduced to
minimize the energy consumption of the
high voltage battery. Charge the battery
immediately.
Power limited due to low EV batter
temperature. Charge battery
OOSEV040507L
Both warning messages are displayed
to protect electric vehicle system when
outside temperature is low. If the high
voltage battery charging level is low
and parked outside in low temperature
for a long time, vehicle power could be
limited.
Charging the battery before driving helps
increase power.
NOTICE
If these warning messages are still
displayed even after the ambient
temperature has increased, have the
vehicle inspected by an authorized
HYUNDAI dealer.

01
1-61
EV Battery Overheated! Stop vehicle
OOSEV040509L
This warning message is displayed to
protect battery and electric vehicle
system when the high voltage battery
temperature is too high.
Turn off the Start/Stop button and
stop the vehicle so that the battery
temperature decreases.
Power limited
ONE1Q011008L
This Indicator light illuminates: • When the START/STOP button is in the ON position.
- It illuminates for approximately 3 seconds and then goes off.
• When the power is limited for the
safety of the high-powered parts of an
electric vehicle. The power is limited
for the following reasons. (Unless
both Service Warning Light and Power
Down Indicator Light illuminate at the
same time, it is not a failure.)
- The high voltage battery level is too low or voltage is decreasing
- The temperature of the high voltage battery is too high or too low
- The temperature of the motor is high
NOTICE
• When this warning message is
displayed, do not accelerate or start
the vehicle suddenly.
• When the power is limited for the
safety of the high-powered parts of
an electric vehicle, the power down
indicator light illuminates. Your
vehicle may not drive uphill or skid
on a slope with the indicator light ON.

Foreword / Electric Vehicle System Overview
1-62
Stop vehicle and check power supply
OOSEV040511L
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 tow your vehicle to the
nearest authorized HYUNDAI dealer and
have the vehicle inspected.
Check virtual engine sound system
OOSEV040512L
This message is displayed when there is
a problem with the Virtual Engine Sound
System (VESS).
In this case, have the vehicle inspected
by an authorized HYUNDAI dealer. Check electric vehicle system
OOSEV040513L
This warning message is displayed when
there is a problem with the electric
vehicle control system.
Refrain from driving when the warning
message is displayed.
In this case, have the vehicle inspected
by an authorized HYUNDAI dealer.

01
1-63
If an Accident Occurs
WARNING
• When a vehicle accident occurs,
move the vehicle to a safe place,
turn OFF the vehicle and disconnect
the high voltage cut-off switch from
the auxiliary battery (12V) to prevent
high voltage electricity from flowing.
• If electric wires are exposed from
inside or outside the vehicle, do not
touch the wires.
Also, do not touch the high voltage
electric wire (orange), connector,
and all electric components and
devices. This may cause electric
shock and lead to injuries.
WARNING
• When a vehicle accident occurs and
the high voltage battery is damaged,
harmful gas and electrolytes may
leak. Be careful not to touch the
leaked liquid.
• When you suspect leakage of
inflammable gas and other harmful
gases, open the windows and
evacuate to a safe place. If any
leaked fluid comes in contact with
your eyes or skin, immediately clean
the affected area thoroughly with
tap water or saline solution and
have doctors inspect it as soon as possible.
WARNING
• If a small scale fire occurs, use a fire
extinguisher (ABC, BC) that is meant
for electrical fires. If it is impossible
to extinguish the fire in the early
stage, remain a safe distance from
the vehicle and immediately call your
local fire emergency responders.
Also, advise them that an electric
vehicle is involved.
• If the fire spreads to the high
voltage battery, large amount of
water is needed to put out the fire.
Using small amount of water or
fire extinguishers not meant for
electrical fires could cause serious
injury or death from electrical
shocks.
WARNING
If you cannot put out the fire
immediately, the high voltage battery
may explode. Evacuate to a safe place
and do not let other people approach
the site.
Contact the fire department and notify
them of an electric vehicle fire. • If the vehicle is flooded with water,
immediately turn off the vehicle and
evacuate to a safe place. Contact
the fire department or an authorized
HYUNDAI dealer.
SaFety preCautionS For eleCtriC VeHiCle

Foreword / Electric Vehicle System Overview
1-64
WARNING
ONE1081011
[A] : Dollies
ONE1081015
• If towing is required, lift all four
wheels off the ground and tow the
vehicle. If you must tow the vehicle
using only two wheels, lift the front
wheels off the ground and tow the
vehicle.
• If you tow the vehicle while the
rear wheels are touching the
ground, the vehicle motor may
generate electricity and the motor
components may be damaged or a
fire may occur.
• When a vehicle fire occurs due to the
battery, there is a risk of a second
fire. Contact the fire department
when towing the vehicle.
Other Precautions for Electric
Vehicle
• When you paint or apply heat
treatment to the vehicle as a result of
an accident, the performance of the
high voltage battery can be reduced.
• If heat treatment is required, contact
an authorized HYUNDAI dealer.
• When you clean the motor
compartment, do not use high
pressure water to wash. This may
cause an electric shock due to a
discharge in high voltage electricity,
or damage the vehicle’s electric
system.
• Use, remodel, or install genuine
Hyundai part or the equivalent (of
the genuine part) specified for your
vehicle.

01
1-65
High Voltage cut-off Switch
ONE1Q011004
Pull down the yellow lever in the high
voltage cut-off switch to shut down high
voltage battery.
WARNING
Never disconnect the high voltage
cut-off switch except in an emergency
situation.
Serious problems may occur, such as
the vehicle will not start.
NOTICE
Putting the excessive force to the
switch lever while shutting down the
high voltage battery may severely
damage the high voltage cut-off switch.