2023 HYUNDAI ELANTRA HYBRID ECU

08
8-23
Emergency Towing
„Front
OCN7070015
„Rear
OCN7H070004
If towing is necessary, we recommend
you have it done by an authorized
HYUNDAI dealer or a commercial tow
truck service.
If 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 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:

[Place the ignition switch in the ACC
position so the steering wheel is not
locked.

[ Place the shift lever in N (Neutral).

[ Release the parking brake.

[ Depress the brake pedal with more
force than normal since 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.

Maintenance9-20
WARNING
OCN7H090007
„Engine coolant cap
OCN7H090008
„Inverter coolant cap
1. Check if the radiator cap label is straight In front.
2. Make sure that the tiny protrusions inside the radiator cap should be
securely interlocked.
WARNING
Never remove the engine
coolant cap and/or inverter
coolant cap or the drain plug
while the engine and radiator
are hot. Hot coolant and steam
may blow out under pressure,
causing serious injury.
Turn the vehicle off and wait until
the engine cools down. Use extreme
care when removing the engine
coolant cap and/or inverter coolant
cap. Wrap a thick towel around it,
and turn it counterclockwise slowly
while the pressure is released from
the cooling system. When you are sure
all the pressure has been released,
using a thick towel, continue turning
counterclockwise to remove it.
Information
The engine coolant and/or inverter coolant
level is influenced by the hybrid system
temperature. Before checking or refilling
the engine coolant and/or inverter coolant,
turn the hybrid vehicle off.
WARNING
The electric motor for the
cooling fan may continue to
operate or start up when the
engine is not running and can
cause serious injury. Keep
hands, clothing and tools away
from the rotating fan blades of
the cooling fan.
Keep hands, clothing and tools away
from the rotating fan blades of the
cooling fan.
Always turn off the vehicle unless the
vehicle has to be inspected with the
engine on. Be cautious as the cooling
fan may operate until you disconnect
the battery connector.

09
9-21
WARNING
Make sure the coolant cap is properly
closed after refilling coolant. Otherwise
the engine could be overheated while
driving.
„Engine compartment front view
OOSH089010L
1. Check if the coolant cap label is straight In front.
„Engine compartment rear view
OCN7H090009
2. Make sure that the tiny protrusions inside the coolant cap are securely
interlocked.
Recommended engine 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 engine
damage.

[ The engine in your vehicle has
aluminum engine parts and must be
protected by an ethylene-glycol with
phosphate based coolant to prevent
corrosion and freezing.

[ Do not use alcohol or methanol
coolant or mix them with the specified
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:
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
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.

Maintenance9-46
Engine Compartment Panel Fuse
Replacement
„Blade type fuse
OCN7H090017
„Cartridge type fuse
OCN7H090018
1. Turn the engine off.
2. Turn all other switches OFF.
3. Remove the fuse panel cover by pressing the tap and pulling up.
4. Check the removed fuse; replace it if it is blown. To remove or insert the
fuse, use the fuse puller in the engine
compartment fuse panel.
5. Push in a new fuse of the same rating, and make sure it fits tightly in
the clips. If it fits loosely, consult an
authorized HYUNDAI dealer.
CAUTION
After checking the fuse box in the
engine compartment securely close
the fuse box cover inside the engine
compartment, until it clicks.
If the fuse box is not closed properly,
water may leak in side, possibly causing
a malfunction with the electrical
system.
Multi fuse (Main fuse)
OCN7H090016
If the multi fuse is blown, it must be
removed as follows:
1. Turn off the engine.
2. Disconnect the negative battery cable.
3. Remove the fuse panel cover by pressing the tab and pulling it up.
4. Remove the nuts shown in the picture above.
5. Replace the fuse with a new one of the same rating.
6. Reinstall in the reverse order of removal.
Information
If the multi fuse is blown, consult an
authorized HYUNDAI dealer.

09
9-49
Driver’s side fuse panel
Fuse NameFuse Rating Circuit Protected
MODULE2 10
AA/V & Navigation Head Unit, AMP, ADAS Unit,
BMS Control Module, Power Outside Mirror Switch,
IBU, IAU, Audio, E/R Junction Block (Power Outlet Relay)
AIR BAG1 15APassenger Occupant Detection Sensor,
SRS Control Module
MODULE5 10AData Link Connector, Audio, ATM Shift Lever Indicator,
A/V & Navigation Head Unit, Wireless Charger, AMP,
A/C Control Module, Electro Chromic Mirror,
A/C Controller, Rear Seat Wamer Control Module,
Front Ventilation Seat Control Module, Front Seat
Wamer Control Module, Driver IMS Control Module
SPARE 2 (IG2) 10A Not Used (Black Box)
AMP 25A AMP
HEATED MIRROR 10A A/C Controller, Driver/Passenger Power Outside Mirror
DOOR LOCK 20A Door Lock/Unlock Switch, Two Turn Unlock Relay
IAU 10A IAU, BLE Unit, Driver/Passenger Door NFC Module
MODULE3 7.5A IAU, Stop Lamp Switch, Sport Mode Switch
A/BAG IND 7.5A Instrument Cluster, Overhead Console Lamp (MTS)
WASHER 15A Multifunction Switch
P/SEAT PASS 30A Not Used
P/SEAT DRV 30A Driver Power Seat Switch, Driver IMS Control Module
WIPER 10AIBU, ECM, Front Wiper Motor,
PCB Block (Front Wiper (LOW) Relay)
MODULE1 10AData Link Connector, Hazard Switch, Key Interlock,
Driver/Passenger Smart Key Outside Handle,
Sport Mode Switch
SUNROOF 20A Sunroof Motor
USB CHARGER 15A Front USB Charger, Console USB Charger
IG1 25A PCB Block (Fuse - IEB 4/ECU 3/TCU 2/EWP 3)

09
9-51
Engine compartment fuse panel
Type Fuse NameFuse Rating Circuit Protected
MULTI
FUSE
-3 MDPS
80A MDPS Unit
MULTI
FUSE-2 COOLING FAN
60A Cooling Fan Motor
IEB 3 60A IDB Unit
PTC HEATER 2 50A PTC Heater 2 Relay
MULTI
FUSE-1 B+5
60APCB Block (Engine Control Relay, Fuse -
ECU 2/HORN/WIPER)
B+1 60AICU Junction Block (IPS2/IPS5/IPS6/IPS7/
IPS14)
B+2 60AICU Junction Block (IPS1/IPS4/IPS8/IPS9/
IPS10)
B+3 50AFuse - EWP 2, ICU Junction Block (Fuse -
SAFETY P/WINDOW DRV, TRUNK, AMP, P/
SEAT DRV, P/SEAT PASS, S/HEATER FRT, S/
HEATER RR, Long Term Load Latch Relay
(Fuse - MEMORY 1/MULTIMEDIA))
IEB 2 60A IDB Unit
PTC HEATER 1 50A PTC Heater 1 Relay
BLOWER 40ABlower Relay, Multipurpose Check
Connector
IG1 40A Ignition Switch, PDM (IG1/ACC) Relay
IG2 40A Ignition Switch, PDM (IG2) Relay

Maintenance9-52
Engine compartment fuse panel
Type Fuse Name Fuse Rating Circuit Protected
FUSE B
ATTERY C/
FAN 1 15A Battery C/Fan Relay
IEB1 40A IDB Unit, Multipurpose Check Connector
CLUTCH
ACTUATOR 30A Clutch Actuator
POWER
OUTLET 1 40A Power Outlet Relay
EWP 2 10A Auxiliary Electric Water Pump
EWP 1 10A Electric Water Pump
POWER
OUTLET 2 20A Front Power Outlet
DCT 1 40A TCM
DCT 2 40A TCM
REAR
HEATED 40A Rear Heated Relay
B+4 40AICU Junction Block (Power Window Relay,
Fuse - AIR BAG 2, IBU 1, BRAKE SWITCH,
DOOR LOCK, MODULE 1, SUNROOF, IAU,
BMS)
HEV ECU 1 10A HPCU
IG3 20A IG3 Relay
TCU 1 10A TCM
FUEL PUMP 20A Fuel Pump Relay
HEV ECU 2 10A HPCU, BMS Control Module
Sub Block FUSE BATTERY C/
FAN 2 10A Battery C/Fan Relay

09
9-53
Engine compartment fuse panel
Fuse NameFuse Rating Circuit Protected
WIPER 25A
Wiper Relay
HORN 15A Horn Relay
IGN COIL 20A Ignition Coil #1 ~ #4
ECU2 15A ECM
SENSOR3 10A E/R Junction Block (Fuel Pump Relay)
SENSOR2 10ACamshaft Position Sensor #1/#2 (Intake/Exhaust), Mass
Air Flow Sensor, ELCM, Oil Control Valve #1/#2 (Intake/
Exhaust),
Purge Control Solenoid Valve
ECU3 10A ECM, HPCU, Clutch Actuator
SENSOR1 15A Oxygen Sensor (Up/Down)
IEB 4 10A IDB Unit, Multipurpose Check Connector
EWP 3 10A Auxiliary Electric Water Pump
ECU1 20A ECM
TCU2 15A Transaxle Range Switch, TCM