coolant reservoir HYUNDAI I20 2021 Owners Manual

3-6
Vehicle information
1. Engine coolant reservoir ............................................................................................................ 10-30
2. Engine oil filler cap
................................................................................................................... 10-26
3. Brake/clutch* fluid reservoir
.................................................................................................... 10-33
4. Air cleaner
................................................................................................................................. 10-39
5. Fuse box
.....................................................................................................................................10-61
6. Battery
....................................................................................................................................... 10-46
7. Windshield washer fluid reservoir ............................................................................................ 10-36
8. Radiator cap
................................................................................................................................ 10-31
9. Engine oil dipstick
..................................................................................................................... 10-26
ENGINE COMPARTMENT
The actual engine room in the vehicle may differ from the illustration.
OBI3090001/OBC3090003ROBI3090001/OBC3090003R
„„Petrol Engine (1.0 T-GDi)Petrol Engine (1.0 T-GDi)
„„Petrol Engine (Smartstream G1.2)Petrol Engine (Smartstream G1.2)

3-7
03
1. Engine coolant reservoir ............................................................................................................ 10-30
2. Engine oil filler cap
................................................................................................................... 10-26
3. Brake/clutch* fluid reservoir
.................................................................................................... 10-33
4. Air cleaner
................................................................................................................................. 10-39
5. Fuse box
.....................................................................................................................................10-61
6. Battery
....................................................................................................................................... 10-46
7. Windshield washer fluid reservoir ............................................................................................ 10-36
8. Radiator cap
................................................................................................................................ 10-31
9. Engine oil dipstick
..................................................................................................................... 10-26
The actual engine room in the vehicle may differ from the illustration.
OBI3090002OBI3090002
„„Diesel Engine (1.5 WGT)Diesel Engine (1.5 WGT)

5-6
Instrument cluster
Engine Coolant Temperature Gauge
OIB044113OIB044113
„„Type AType A
„„Type BType B
OBI3040006OBI3040006
This gauge shows the temperature of the
engine coolant when the ignition switch
is in the ON position.
NOTICE
If the gauge pointer moves beyond the
normal range area toward the “130”
position, it indicates overheating that
may damage the engine.
Do not continue driving with an
overheated engine. If your vehicle
overheats, refer to “If the Engine
Overheats” in chapter 8.
WARNING
Never remove the radiator cap or
reservoir cap when the engine is hot.
The engine coolant is under pressure
and could cause severe burns. Wait
until the engine is cool before adding
coolant to the reservoir.
Odometer
OIB044116OIB044116
„„ Type A Type A
OIB044115OIB044115
„„Type BType B
The odometer indicates the total
distance that the vehicle has been
driven and should be used to determine
when periodic maintenance should be
performed.
- Odometer range : 0 ~ 1599999
kilometers or 999999 miles.
i Information
It is forbidden to alter the odometer of
all vehicles with the intent to change
the mileage registered on the odometer.
The alteration may void your warranty
coverage.

9-8
Emergency situations
6. If you cannot find the cause of the
overheating, wait until the engine
temperature has returned to normal.
Then, if coolant has been lost,
carefully add coolant to the reservoir
to bring the fluid level in the reservoir
up to the halfway mark.
7. Proceed with caution, keeping alert
for further signs of overheating.
If overheating happens again,
we recommend that you call an
authorized HYUNDAI dealer for
assistance.
NOTICE
• Serious loss of coolant indicates a
leak in the cooling system and we
recommend the system be checked
by an authorized HYUNDAI dealer.
• 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.

10-4
Maintenance
1. Engine coolant reservoir
2. Engine oil filler cap
3. Brake/clutch* fluid reservoir
4. Air cleaner
5. Fuse box 6. Battery
7. Windshield washer fluid reservoir
8. Radiator cap
9. Engine oil dipstick
ENGINE COMPARTMENT
The actual engine room in the vehicle may differ from the illustration.
OBI3090001/OBC3090003ROBI3090001/OBC3090003R
„„Petrol Engine (Kappa 1.0 T-GDI)Petrol Engine (Kappa 1.0 T-GDI)
„„Petrol Engine (Smartstream G1.2)Petrol Engine (Smartstream G1.2)

10-5
10
1. Engine coolant reservoir
2. Engine oil filler cap
3. Brake/clutch* fluid reservoir
4. Air cleaner
5. Fuse box 6. Battery
7. Windshield washer fluid reservoir
8. Radiator cap
9. Engine oil dipstick
10. Fuel filter

„„(Diesel) 1.5 WGT(Diesel) 1.5 WGT
The actual engine room in the vehicle may differ from the illustration.
OBI3090002OBI3090002

10-8
Maintenance
The following lists are vehicle checks
and inspections that should be
performed at the frequencies indicated
to help ensure safe, dependable
operation of your vehicle.
Any adverse conditions should be
brought to the attention of your dealer
as soon as possible.
These Owner Maintenance Checks are
generally not covered by warranties and
you may be charged for labor, parts and
lubricants used.
WARNING
Diesel Engine
Never manipulate or modify the
injection system while running the
diesel engine or within 30 seconds
after turning OFF the diesel engine. The
high-pressure pump, high-pressure
pipes, rail, and injectors are still subject
to high pressure immediately after
stopping the diesel engine.
When the fuel leakage vents out, it
may cause serious body injury. Any
people, who are implanted with the
artificial cardiac pacemaker, should
remain away from the ECU or the
wiring harness by at least 30 cm,
while running the diesel engine. The
high currents of the electronic engine
control system produce a considerable
amount of magnetic fields.
Owner maintenance schedule
When you stop for fuel:
• Check the engine oil level.
• Check the coolant level in coolant
reservoir.
• Check the windshield washer fluid
level.
• Look for low or under-inflated tires.
• Check the radiator and condenser.
Check if the front of the radiator and
condenser are clean and not blocked
with leaves, dirt or insects etc.
If any of the above parts are extremely
dirty or you are not sure of their
condition, we recommend that you
contact an authorized HYUNDAI
dealer.
WARNING
Be careful when checking your engine
coolant level when the engine is hot.
Scalding hot coolant and steam may
blow out under pressure. This could
cause burns or other serious injury.
OWNER MAINTENANCE

10-9
10
While operating your vehicle:
• Note any changes in the sound of the
exhaust or any smell of exhaust fumes
in the vehicle.
• Check for vibrations in the steering
wheel. Notice any increased steering
effort or looseness in the steering
wheel, or change in its straight-ahead
position.
• Notice if your vehicle constantly turns
slightly or “pulls” to one side when
traveling on smooth, level road.
• When stopping, listen and check for
unusual sounds, pulling to one side,
increased brake pedal travel or “hard-
to-push” brake pedal.
• If any slipping or changes in the
operation of your transmission occurs,
check the transmission fluid level.
• Check the parking brake.
• Check for fluid leaks under your
vehicle (water dripping from the air
conditioning system during or after
use is normal).
At least monthly:
• Check the coolant level in the engine
coolant reservoir.
• Check the operation of all exterior
lights, including the stoplights, turn
signals and hazard warning flashers.
• Check the inflation pressures of all
tires including the spare for tires that
are worn, show uneven wear, or are
damaged.
• Check for loose wheel lug nuts.
At least twice a year
(i.e., every Spring and Fall):
• Check the radiator, heater and air
conditioning hoses for leaks or
damage.
• Check the windshield washer spray
and wiper operation. Clean wiper
blades with clean cloth dampened
with washer fluid.
• Check the headlight alignment.
• Check the muffler, exhaust pipes,
shields and clamps.
• Check the lap/shoulder belts for wear
and function.
At least once a year:
• Clean the body and door drain holes.
• Lubricate the door hinges and checks,
and hood hinges.
• Lubricate the door and hood locks and
latches.
• Lubricate the door rubber
weatherstrips.
• Check the air conditioning system.
• Inspect and lubricate Automated
manual transmission linkage and
controls.
• Clean the battery and terminals.
• Check the brake/clutch fluid level.

10-25
10
Vacuum crankcase ventilation
hoses (if equipped)
Inspect the surface of hoses for
evidence of heat and/or mechanical
damage. Hard and brittle rubber,
cracking, tears, cuts, abrasions, and
excessive swelling indicate deterioration.
Particular attention should be paid to
examine those hose surfaces nearest to
high heat sources, such as the exhaust
manifold.
Inspect the hose routing to assure that
the hoses do not come in contact with
any heat source, sharp edges or moving
component which might cause heat
damage or mechanical wear. Inspect
all hose connections, such as clamps
and couplings, to make sure they are
secure, and that no leaks are present.
Hoses should be replaced immediately if
there is any evidence of deterioration or
damage.
Air cleaner filter
We recommend that the air cleaner filter
be replaced by an authorized HYUNDAI
dealer.
Spark plugs
Make sure to install new spark plugs of
the correct heat range.
WARNING
Do not disconnect and inspect spark
plugs when the engine is hot. You may
burn yourself.
Valve clearance (For 1.0 T-GDi)
Inspect for excessive valve noise and/or
engine vibration and adjust if necessary.
We recommend that the system be
serviced by an authorized HYUNDAI
dealer.
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 maintenance
schedule.
Manual transmission fluid
(if equipped)
Inspect the manual transmission fluid
according to the maintenance schedule.
Automated manual transmission
fluid (if equipped)
Inspect the Automated manual
transmission fluid according to the
maintenance schedule.

10-32
Maintenance
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
• Do not drive with no engine coolant.
It may cause water pump failure and
engine seizure, etc.
• 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.
Checking the coolant level
OBI3090008OBI3090008
„„Petrol Engine (1.0 T-GDi)Petrol Engine (1.0 T-GDi)
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 F (Full) and L (Low) marked on
the side of the coolant reservoir when
the engine is cool.
If the coolant level is low, add enough
distilled (deionized) water.
Bring the level to F (Full), but do
not overfill. If frequent additions are
required, we recommend that the
system be inspected by an authorized
HYUNDAI dealer.
ENGINE COOLANT