ECU HYUNDAI IONIQ 5 2023 Service Manual

06
6-43
When All Wheel Drive(AWD) is
activated, driving forces are distributed
appropriately to front and rear wheels.
It could improve driving performance by
maximizing the driving force of vehicles
on severe road conditions such as steep
hills, unpaved, slippery, etc.
Advantage of electronic AWD
1. Improvement of straight stability
2. Improvement of driving performance
on curve
3. Secure stability on severe condition such as wet and sandy roads.
4. Improvement of energy efficiency
from driving mode automatic control.
Information
AWD vehicles could change the
engagement status of the motor according
to the situation required. Auto changing
the driving mode(2WD/AWD)helps
improve energy efficiency and driving
stability.
WARNING
To reduce the risk of SERIOUS INJURY
or DEATH: • Avoid high speeds when cornering or turning.
• Do not make quick steering wheel
movements, such as sharp lane
changes or fast, sharp turns.
• The risk of a rollover is greatly
increased if you lose control of your
vehicle at highway speeds.
• Loss of control often occurs if two or
more wheels drop off the roadway
and the driver over steers to reenter
the roadway.
• In the event your vehicle leaves
the roadway, do not steer sharply.
Instead, slow down before pulling
back into the travel lanes.
NOTICE
• Do not drive in water if the level
is higher than the bottom of the
vehicle.
• Check your brake condition once
you are out of mud or water. Depress
the brake pedal several times as you
move slowly until you feel normal
braking return.
• Shorten your scheduled
maintenance interval if you drive in
off-road conditions such as sand,
mud or water (see "Maintenance
Under Severe Usage Conditions"
section in chapter 9).
• Always wash your vehicle thoroughly
after off road use, especially the
bottom of the vehicle.
• Be sure to equip the vehicle with four
tires of the same size and type.
• Make sure that a full time AWD
vehicle is towed by a flat bed tow truck.
All Wheel Drive (AWD) (iF eQUiPPeD)

06
6-67
WARNING
If you carry items inside your
vehicle (for example, suitcases,
tools, packages, or anything else),
they are moving as fast as the
vehicle. If you have to stop or turn
quickly, or if there is a crash, the
items will keep going and can cause
an injury if they strike the driver or a
passenger. • Put items in the cargo area of
your vehicle. Try to spread the
weight evenly.
• Do not stack items, like suitcases,
inside the vehicle above the tops
of the seats.
• Do not leave an unsecured child
restraint in your vehicle.
• When you carry something inside
the vehicle, secure it.

Driving Your Vehicle
6-72
Safety chains
You should always attach chains between
your vehicle and your trailer.
Instructions about safety chains may
be provided by the hitch manufacturer
or trailer manufacturer. Follow the
manufacturer’s recommendation for
attaching safety chains. Always leave just
enough slack so you can turn with your
trailer. And, never allow safety chains to
drag on the ground.
Trailer brakes
If your trailer is equipped with a braking
system, make sure it conforms to
your country’s regulations and that
it is properly installed and operating
correctly.
If your trailer weighs more than the
maximum trailer weight without trailer
brakes loaded, then it needs its own
brakes and they must be adequate. Be
sure to read and follow the instructions
for the trailer brakes so you’ll be able
to install, adjust and maintain them
properly. Be sure not to modify your
vehicle’s brake system.
WARNING
Do not use a trailer with its own brakes
unless you are absolutely certain that
you have properly set up the brake
system. This is not a task for amateurs.
Use an experienced, competent trailer
shop for this work.
Driving with a Trailer
Towing a trailer requires a certain
amount of experience. Before setting
out for the open road, you must get to
know your trailer. Acquaint yourself with
the feel of handling and braking with the
added weight of the trailer. And always
keep in mind that the vehicle you are
driving is now longer and not nearly as
responsive as your vehicle is by itself.
Before you start, check the trailer hitch
and platform, safety chains, electrical
connector(s), lights, tires and brakes.
During your trip, occasionally check
to be sure that the load is secure, and
that the lights and trailer brakes are still
working.
Information
When the ambient temperature is lower
than 32°F (0°C) and the remaining high
voltage battery is low, the power of the
vehicle with a trailer can be dropped,
causing a trouble in acceleration or drop of the speed when driving hills.
When driving with a trailer, be sure to
charge the high voltage battery more than
50% if the ambient temperature is lower
than 32°F (0°C).

Driver Assistance System
7-16
WARNING
Take the following precautions when
using Forward Collision-Avoidance
Assist: • For your safety, change the Settings
after parking the vehicle at a safe
location.
• With ‘Active Assist’ or ‘Warning Only’
selected, when ESC is turned off by
pressing and holding the ESC OFF
button, Forward Collision-Avoidance
Assist will turn off automatically.
In this case, Forward Collision-
Avoidance Assist cannot be set
from the Settings menu and the

warning light will illuminate on the
cluster which is normal. If ESC is
turned on by pressing the ESC OFF
button, Forward Collision-Avoidance
Assist will maintain the last setting.
• Forward Collision-Avoidance Assist
does not operate in all situations or
cannot avoid all collisions.
• The driver should hold the
responsibility to control the vehicle.
Do not solely depend on Forward
Collision-Avoidance Assist. Rather,
maintain a safe braking distance, and
if necessary, depress the brake pedal
to reduce driving speed or to stop
the vehicle.
• Never deliberately operate Forward
Collision-Avoidance Assist on people,
objects, etc. It may cause serious
injury or death.
• Forward Collision-Avoidance
Assist may not operate if the driver
depresses the brake pedal to avoid
collision. •
Depending on the road and driving
conditions, Forward Collision-
Avoidance Assist may warn the driver
late or may not warn the driver.
• During Forward Collision-Avoidance
Assist operation, the vehicle may
stop suddenly injuring passengers
and shifting loose objects. Always
have the seat belt on and keep loose
objects secured.
• If any other system’s warning
message is displayed or audible
warning is generated, Forward
Collision-Avoidance Assist warning
message may not be displayed
and audible warning may not be
generated.
• You may not hear the warning sound
of Forward Collision-Avoidance
Assist if the surrounding is noisy.
• Forward Collision-Avoidance
Assist may turn off or may not
operate properly or may operate
unnecessarily depending on the road
conditions and the surroundings.
WARNING
• Even if there is a problem with
Forward Collision-Avoidance
Assist, the vehicle’s basic braking
performance will operate properly.
• During emergency braking, braking
control by Forward Collision-
Avoidance Assist will automatically
cancel when the driver excessively
depresses the accelerator pedal or
sharply steers the vehicle.

Driver Assistance System
7-40
WARNING
Take the following precautions when
using Blind-Spot Collision-Avoidance
Assist: • For your safety, change the Settings
after parking the vehicle at a safe
location.
• If any other system’s warning
message is displayed or audible
warning is generated, Blind-Spot
Collision-Avoidance Assist’s warning
message may not be displayed
and audible warning may not be
generated.
• You may not hear the warning sound
of Blind-Spot Collision-Avoidance
Assist if the surrounding is noisy.
• Blind-Spot Collision-Avoidance
Assist may not operate if the driver
applies the brake pedal to avoid
collision.
• When Blind-Spot Collision-Avoidance
Assist is operating, braking control
by the system will automatically
cancel when the driver excessively
depresses the accelerator pedal or
sharply steers the vehicle.
• During Blind-Spot Collision-
Avoidance Assist operation, the
vehicle may stop suddenly injuring
passengers and shifting loose
objects. Always have the seat belt on
and keep loose objects secured.
• Even if there is a problem with Blind-
Spot Collision-Avoidance Assist, the
vehicle’s basic braking performance
will operate properly.
• Blind-Spot Collision-Avoidance Assist
does not operate in all situations or
cannot avoid all collisions. •
Blind-Spot Collision-Avoidance
Assist may warn the driver late or
may not warn the driver depending
on the road and driving conditions.
• Driver should maintain control of the
vehicle at all times. Do not depend
on Blind-Spot Collision-Avoidance
Assist. Maintain a safe braking
distance, and if necessary, depress
the brake pedal to reduce driving
speed or to stop the vehicle.
• Never operate Blind-Spot Collision-
Avoidance Assist on people, animal,
objects, etc. It may cause serious
injury or death.
WARNING
The brake control may not operate
properly depending on the status of
ESC (Electronic Stability Control).
There will only be a warning when: - The ESC (Electronic Stability Control)
warning light is on
- ESC (Electronic Stability Control) is
engaged in a different function
Information
The images or colors may be displayed
differently depending on the specifications
of the instrument panel or theme.

07
7-127
WARNING
Take the following precautions when
using Rear Cross-Traffic Collision-
Avoidance Assist: • For your safety, change the Settings
after parking the vehicle at a safe
location.
• If any other system’s warning
message is displayed or audible
warning is generated, Rear Cross-
Traffic Collision-Avoidance Assist’s
warning message may not be
displayed and audible warning may
not be generated.
• You may not hear the warning sound
of Rear Cross-Traffic Collision-
Avoidance Assist if the surrounding
is noisy.
• Rear Cross-Traffic Collision-
Avoidance Assist may not operate if
the driver applies the brake pedal to
avoid collision.
• During Rear Cross-Traffic Collision-
Avoidance Assist operation, the
vehicle may stop suddenly injuring
passengers and shifting loose
objects. Always have the seat belt on
and keep loose objects secured.
• Even if there is a problem with Rear
Cross-Traffic Collision-Avoidance
Assist, the vehicle’s basic braking
performance will operate properly.
• When Rear Cross-Traffic Collision-
Avoidance Assist is operating,
braking control by the function
will automatically cancel when the
driver excessively depresses the
accelerator pedal.
• Rear Cross-Traffic Collision-
Avoidance Assist does not operate
in all situations or cannot avoid all
collisions.
• Rear Cross-Traffic Collision-
Avoidance Assist may warn the
driver late or may not warn the driver
depending on the road and driving
conditions. •
The driver should hold the
responsibility to control the vehicle.
Do not solely depend on Rear Cross-
Traffic Collision-Avoidance Assist.
Rather, maintain a safe braking
distance, and if necessary, depress
the brake pedal to reduce driving
speed or to stop the vehicle.
• Never deliberately operate Rear
Cross-Traffic Collision-Avoidance
Assist on people, animal, objects,
etc. It may cause serious injury or
death.
CAUTION
The brake control may not operate
properly depending on the status of
ESC (Electronic Stability Control).
There will only be a warning when: - The ESC (Electronic Stability Control)
warning light is on
- ESC (Electronic Stability Control) is
engaged in a different function
Information
If braking is assisted by Rear Cross-
Traffic Collision-Avoidance Assist, the
driver must immediately depress the brake
pedal and check vehicle surroundings. - Brake control will end when the
driver depresses the brake pedal with
sufficient power.
- After shifting the gear to R (Reverse),
braking control will operate once for
left and right vehicle approach.
Information
The images or colors may be displayed
differently depending on the specifications
of the instrument panel or theme.

08
8-15
WARNING
Sealant • Keep out of reach of children.
• Avoid contact with eyes.
• Do not swallow.
Using the Tire Mobility Kit When
a Tire is Flat
CAUTION
ONE1081008
Detach the speed restriction label (1)
from the sealant bottle (2), and place
it in a highly visible place inside the
vehicle such as on the steering wheel to
remind the driver not to drive too fast.
CAUTION
If only the tire pressure needs to be
adjusted, refer to “How to Adjust Tire
Pressure” in this chapter.
Before using the Tire Mobility Kit, be
fully aware of the explanation on the
sealant. 1. Shake the sealant bottle (2).
OOSH079018L
2. Connect the filling hose (3) to the sealant bottle (2) in the direction of (A)
and connect the sealant bottle to the
compressor (6) in the direction of (B).
3. Ensure that the compressor is switched OFF.
4. Unscrew the valve cap from the valve
of the defective wheel and screw the
filling hose (3) of the sealant bottle
onto the valve.
ONE1081009
CAUTION
Securely install the sealant filling hose
to the valve. If not, sealant may flow
backward, possibly clogging the filling hose.

08
8-21
Removable Towing Hook
1. Open the liftgate, and remove the towing hook from the tool case.
2. Remove the hole cover.
„„Front
ONE1081016
• Push the lower part of the bumper
hole cover.
„„Rear
ONE1081017
• Push the upper part of the bumper
hole cover.
• Pull the lower part of the bumper hole
cover.
3. Install the towing hook by turning it clockwise into the hole until it is fully
secured.
4. Remove the towing hook and install
the cover after use.
NOTICE
Failure to properly tighten the towing
hook may result in vehicle damage and
deformation of related parts.
CAUTION
Make sure the towing hook is tighten
properly. If not, during towing the
towing hook may be thrown off the
vehicle resulting in serious injury or
accident.

Emergency Situations
8-22
Emergency Towing
„„Front
ONE1081018
„„Rear
ONE1081019
If towing is necessary, have it done by
an authorized HYUNDAI dealer or a
commercial tow truck service.
If a towing service is not available in
an emergency, your vehicle may be
temporarily towed using a cable or chain
secured to the emergency towing hook
at the front (or rear) of the vehicle.
Use extreme caution when towing the
vehicle with a cable or chain. A driver
must be in the vehicle to steer it and
operate the brakes.
Towing in this manner may be done
only on hard-surfaced roads for a short
distance and at low speeds. Also, the
wheels, axles, power train, steering
and brakes must all be in good working condition.
CAUTION
The driver must be in the vehicle for
steering and braking operations when
the vehicle is being towed. Passengers
other than the driver must not be in the
vehicle.
Always follow these emergency towing
precautions: • Press the Start/Stop button to the
ACC position so the steering wheel is
not locked.
• Shift the gear to N (Neutral).
• Release the parking brake.
• Depress the brake pedal with more
force than normal as you will have
reduced braking performance.
• More steering effort will be required
because the power steering system will be disabled.
• Use a vehicle heavier than your own to
tow your vehicle.
• The drivers of both vehicles should
communicate with each other
frequently.
• Before emergency towing, check that
the hook is not broken or damaged.
• Fasten the towing cable or chain
securely to the hook.
• Do not jerk the hook. Apply steady
and even force.

Maintenance
9-20
For best battery service
ONE1091009
• Keep the battery securely mounted.
• Keep the battery top clean and dry.
• Keep the terminals and connections
clean, tight, and coated with
petroleum jelly or terminal grease.
• Rinse any spilled electrolyte from the
battery immediately with a solution of
water and baking soda.
• If the vehicle is not going to be used
for an extended time, disconnect the
battery cables.
Battery Capacity Label
OLMB073072

à The actual battery label in the vehicle
may differ from the illustration.
1. CMF60L-BCI : The HYUNDAI model name of battery
2. 12V : The nominal voltage
3. 60Ah(20HR) : The nominal capacity (in Ampere hours)
4. 92RC : The nominal reserve capacity
(in min.)
5. 550CCA : The cold-test current in amperes by SAE
6. 440A : The cold-test current in amperes by EN
Battery Recharging
By battery charger
Your vehicle has a maintenance-free,
calcium-based battery. • If the battery becomes discharged
over a short time (because, for
example, the headlamps or interior
lights were left on while the vehicle
was not in use), recharge it by slow
charging (trickle) for 10 hours.
• If the battery gradually discharges
because of high electrical load while
the vehicle is being used, recharge it
at 20-30A for two hours.