ECU HYUNDAI ELANTRA SEL 2021 Service Manual

Emergency Situations
8-22
Emergency towing
„„Front
OCN7070015
„„Rear
OCN7070016
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 button 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.

Maintenance
9-16
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 climate.
NOTICE
• When the engine overheats from
low engine coolant, suddenly adding
engine coolant may cause cracks
in the engine. To prevent damage,
add engine coolant slowly in small
quantities.
• Do not drive with no engine coolant.
It may cause water pump failure and
engine seizure, etc.
Checking the Engine Coolant
Level
OCN7080004
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 F and the L marks on the
side of the coolant reservoir when the
engine is cool.
If the coolant level is low, add enough
distilled (deionized) water to bring the
level to the F mark, but do not overfill. If
frequent additions are required, see an
authorized HYUNDAI dealer for a cooling
system inspection.
WARNING
OCN7080005
1. Check if the radia tor cap label is
straight In front.
2.
Mak

e sure that the tiny protrusions
inside the radiator cap should be
securely interlocked.
EnginE Coolant

09
9-19
parking BrakE
Checking the Washer Fluid Level
OCN7080007
Check the fluid level in the washer fluid
reservoir and add fluid if necessary. Plain
water may be used if washer fluid is not
available. However, use washer solvent
with antifreeze characteristics in cold
climates to prevent freezing.
WARNING
To prevent serious injury or death, take
the following safety precautions when
using washer fluid:
• Do not use engine coolant or
antifreeze in the washer fluid
reservoir.
Engine coolant can severely obscure
visibility when sprayed on the
windshield and may cause loss
of vehicle control resulting in an
accident or damage to paint and
body trim.
• Do not allow sparks or flames to
contact the washer fluid or the
washer fluid reservoir. Washer fluid
may contain alcohol and can be
flammable.
• Do not drink washer fluid and avoid
contact with skin. Washer fluid is
harmful to humans and animals.
• Keep washer fluid away from
children and animals.
waShEr fl uid
Checking the parking brake
OCN7080072L
Check the stroke of the parking brake by
counting the number of “clicks’’ heard
while fully applying it from the released
position. Also, the parking brake alone
should securely hold the vehicle on a
fairly steep grade. If the stroke is more or
less than specified, we recommend that
the system be serviced by an authorized
HYUNDAI dealer.
Stroke : 6~8 “clicks’’ at a force of 44 lbs
(20 kg, 196 N)

09
9-25
NOTICE
• When you do not use the vehicle for a
long time in a low temperature area,
disconnect the battery and keep it
indoors.
• Always charge the battery fully to
prevent battery case damage in low
temperature areas.
NOTICE
If you connect unauthorized electronic
devices to the battery, the battery may
be discharged. Never use unauthorized
devices.
For Best Battery Service
OCN7080016
• 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 acid from the battery
immediately with a solution of water
and baking soda.
Battery capacity label
„„Example
OCN7080076L
 The actual batt ery label in the vehicle may differ
from the illustration.
1. AGM70L-DIN: The HYUNDAI model
name o f battery
2.
12V : The nominal voltage
3.
70Ah (20HR): The nominal capacity (in
Amper

e hours)
4.
RC 120min: The nominal r

eserve
capacity (in min.)
5.
CCA: The cold-t

est current in amperes
by SAE
6.
760

A: The cold-test current in
amperes by EN

Maintenance
9-42
Engine Compartment Panel Fuse
Replacement
„„Blade type fuse
OCN7080021
„„Cartridge type fuse
OCN7080022
1. Turn the engine off.
2.
Turn all o
ther switches OFF.
3.
Remo

ve the fuse panel cover by
pressing the tap and pulling up.
4.
Check the remo

ved 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 o

f 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)
OCN7080020
If the multi fuse is blown, it must be
removed as follows:
1.
Turn o

ff the engine.
2.
Disconnect the negativ

e battery
cable.
3.
Remo

ve the fuse panel cover by
pressing the tab and pulling it up.
4.
Remo

ve the nuts shown in the picture
above.
5.
Replace the fuse with a ne

w one of
the same rating.
6.
Reins

tall in the reverse order of
removal.
Information
If the multi fuse is blown, consult an
authorized HYUNDAI dealer.

09
9-45
Driver’s side fuse panel
Fuse NameFuse Rating
Circuit Protected
MODULE2 10AE/R Junction Block (Power Outlet Relay), AMP, IBU,
IAU, Audio, Power Outside Mirror Switch, Parking
Collision Avoidance Assist Unit, DC-DC Converter, A/V &
Navigation Head Unit
AIR BAG1 15ASRS Control Module, Passenger Occupant Detection
Sensor
MODULE5 10AA/T Shift Lever Indicator, Front Wireless Charger, A/C
Controller,
Electro Chr

omic Mirror, A/C Control Module,
Audio, A/V & Navigation Head Unit, AMP, DC-DC
Converter,
Data Link Connect

or, Rear Seat Warmer
Control Module, Front Seat Warmer Control Module
AMP 25A AMP, DC-DC Converter
HEATED MIRROR 10ADRV/PAS Outside Mirror Heated, A/C Control Module,
A/C Controller
DOOR LOCK 20A
DRV/PAS DOOR ACTUATOR
IAU 10A
BLE Unit, IAU, Driver/Passenger Door NFC Module
MODULE3 7.5A Stop Lamp Switch, IAU
A/BAG IND 7.5A Instrument Cluster, Overhead Console Lamp
WASHER 15A Multifunction Switch
P/SEAT
P

ASS 30A
Passenger Seat Manual Switch
P/SEAT
DR

V 30A
Driver Seat Manual Switch
WIPER 10A
PCM/ECM, IBU
MODULE1 10ADriver/Passenger Smart Key Outside Handle, Crash
Pad Switch, Sport Mode Switch, Data Link Connector,
Hazard Switch, Key Solenoid
SUNROOF 20A
Sunroof Motor, Data Link Connector
USB
CHAR

GER 15A Front USB Charger
IG1 25A PCB Block (Fuse - ABS3, ECU5, EOP2, TCU2)

09
9-47
Engine compartment fuse panel
Type Fuse NameFuse Rating
Circuit Protected
MULTI
FUSE-3 A LT
150A
180A [G4NS-W/O AMS2] Alternator, (Fuse - ABS1,
ABS2, EOP1, POWER OUTLET1)
[G4FP/G4NS-WIth AMS2] Alternator, (Fuse -
ABS1, ABS2, EOP1, POWER OUTLET1)
MDPS1 80A
MDPS Unit
MULTI
FUSE-1 B+5
60APCB Block (Engine Control Relay, Fuse -
ECU3, ECU4, HORN, WIPER, A/C)
B+1 60AICU Junction Block (IPS2/IPS5/IPS6/IPS7/
IPS14)
B+2 60AICU Junction Block (IPS1/IPS4/IPS8/IPS9/
IPS10)
B+3 50AICU Junction Block (Fuse - TRUNK, AMP,
SAFETY P/WINDOW DRV, P/SEAT DRV, P/
SEAT PASS, S/HEATER FRT, S/HEATER RR,
Long Term Load Latch Relay)
EPB 60A
ESC Control Module
PTC HEATER 50A
PTC HEATER
BLOWER 40A
BLOWER, DATC
IG1 40AE/R Junction Block (PDM (IG1/ACC) Relay),
Ignition Switch
IG2 40AE/R Junction Block (PDM (IG2) Relay, Start
Relay), Ignition Switch

09
9-49
Engine compartment fuse panel
Fuse NameFuse Rating
Circuit Protected
WIPER 25A Wiper Motor
ECU4 15A PCM/ECM
A/C 10A
[G4FM] A/C Compressor
HORN 15A Horn
IGN COIL 20A
Ignition Coil #1~#4
ECU3 15A PCM/ECM
SENSOR3 10A
E/R Junction Block (Fuel Pump Relay)
ECU2 10A
Not Used
SENSOR2 10A[G4NS] Variable Intake Solenoid Valve, Oil Pump
Solenoid Valve, Oil Control Valve #1/#2, Canister Close
Valve, Purge Control Solenoid Valve,
PCB Block (A/C Relay), E/R Junction Block (Cooling
Fan1/2 Relay)
ECU5 10A
ECM/PCM, [MT] Ignition Lock Switch
SENSOR1 15A Oxygen Sensor (UP/DOWN)
ABS3 10A
ABS Control Module, ESC Control Module
INJECTOR 15A [G4FM/G4FG/G4NA] Injector #1~#4
ECU1 20A
PCM/ECM
TCU2 15A Transaxle Range Switch