2021 HYUNDAI I20 check engine

10-13
10
MAINTENANCE
INTERVALS
MAINTENANCE ITEMNumber of months or driving distance, whichever comes first
Kmsx1,000
1.51020304050607080
Months
2 1224364860728496
Years
- 12345678
VEHICLE ON FLOOR
Wiper (wiper blade , washer fluid) I IIIIIIII
Brake/Clutch (Pedal free play/Pipes/Hoses/
Connectors)IIIIIIIII
Fuel filler cap -IIIIIIII
Climate control air filter I C R C R C R C R
Check AC system (refrigerant/Compressor) I IIIIIIII
Cooling system (water pump,hoses) & leakage I I IIIIIII
VEHICLE ON LIFT
Steering gear rack, linkage and bootsIIIIIIIII
Exhaust systemIIIIIIII
Fuel filter*8-----R---
Fuel tank air filter Not Applicable
Front & rear suspension (linkages & ball joints)------
I-I
I : Inspect and if necessary adjust,top-up, clean or replace
R : ReplaceC : Clean and Replace if necessaryNORMAL MAINTENANCE SCHEDULE - PETROL ENGINE (CONT.)

10-14
Maintenance
MAINTENANCE
INTERVALS
MAINTENANCE ITEMNumber of months or driving distance, whichever comes first
Kmsx1,000
1.51020304050607080
Months
2 1224364860728496
Years
- 12345678
Tyre Pressure,condition & rotation - I,TR I,TR I,TR I,TR I,TR I,TR I,TR I,TR
Fuel lines, hoses and connections IIIIIIII
iMT system clutch tube and line - I IIIIIII
Driveshafts & bootsIIIIIIIII
Fluid leakages IIIIIIIII
Front and rear wheel bearings & bushes Inspect if reqd.
Parking brake (disc/drum ,shoe & operation) - CCCCCCCC
Wheel Alignment & Balancing - Inspect if reqd.
FINAL CHECKS
Bolt and nuts on chasis and body I I IIIIIII
Lubricate locks & hinges ILLLLLLLL
Check all electrical systems (Drive belts ,alterna-
tor)*
9
IIIIIIIII
Warning lights operation & GDS system check I IIIIIIII
Ext & int. lights, horn & gaugesIIIIIIIII
NORMAL MAINTENANCE SCHEDULE - PETROL ENGINE (CONT.)
I : Inspect and if necessary adjust,top-up, clean or replace
R : ReplaceC : Clean and Replace if necessary
TR : Tyre Rotation L : Lubricate

10-18
Maintenance
MAINTENANCE
INTERVALS
MAINTENANCE ITEMNumber of months or driving distance, whichever comes first
Kmsx1,000
1.51020304050607080
Months
2 1224364860728496
Years
- 12345678
ENGINE BAY
Engine oil & filter *
1 *2 *3
I RRRRRRRR
Drive beltAt first, inspect every 80,000km (50,000miles) or 48months :
after that, inspect every 20,000km (12,500miles) or 12months
Air cleaner filter - C R C R C R C
Battery condition & specific gravityIIIIIIIII
Valve clearance*
4
Inspect at every 90,000 kms or 108 months
Hoses (Vaccum/ EGR / VGT/ WGT) -IIIIIIII
Idler / damper pulley/Adj. Bolt Inspect when replacing the drive belt or timing belt/chain
Brake/Clutch fluid Inspect @ Every service ; Replace @ every 45,000 km or 3 years
Engine Coolant (topup & specify gravity) *
5
Inspect at every service;
Replace first at 120,000 Km or 120 months ; then at every 30,000 Km or 24 months
Manual transaxle fluid *
6
------ I - I
Dual Transmission fluid (if equipped) *
6
No Check ; No Service reqd.
NORMAL MAINTENANCE SCHEDULE - DIESEL ENGINE
C : Clean and Replace if necessary I : Inspect and if necessary adjust,top-up, clean or replace
R : Replace

10-19
10
MAINTENANCE
INTERVALS
MAINTENANCE ITEMNumber of months or driving distance, whichever comes first
Kmsx1,000
1.51020304050607080
Months
2 1224364860728496
Years
- 12345678
VEHICLE ON FLOOR
Wiper (wiper blade , washer fluid)IIIIIIIII
Brake/Clutch (Pedal free play/Pipes/Hoses/
Connectors)IIIIIIIII
Fuel filler cap - I IIIIIII
Climate control air filter I C R C R C R C R
Check AC system (refrigerant/Compressor)IIIIIIIII
Cooling system (water pump,hoses) & leakage IIIIIIIII
VEHICLE ON LIFT
Steering gear rack, linkage and boots I I IIIIIII
Exhaust system (leakages & damages)IIIIIIIII
Fuel filter*8IIIIIIIII
Fuel tank air filter (If equipped) - -R-R-R
-R
Front & rear suspension (linkages & ball joints)IIIIIIIII
I : Inspect and if necessary adjust,top-up, clean or replace
R : ReplaceC : Clean and Replace if necessary
NORMAL MAINTENANCE SCHEDULE - DIESEL ENGINE (CONT.)

10-20
Maintenance
NORMAL MAINTENANCE SCHEDULE - DIESEL ENGINE (CONT.)
MAINTENANCE
INTERVALS
MAINTENANCE ITEMNumber of months or driving distance, whichever comes first
Kmsx1,000
1.51020304050607080
Months
2 1224364860728496
Years
- 12345678
Tyre Pressure,condition & rotation - I,TR I,TR I,TR I,TR I,TR I,TR I,TR I,TR
Fuel lines, hoses and connectionsIIIIIIIII
Driveshafts & bootsIIIIIIIII
Fluid leakages I IIIIIIII
Front and rear wheel bearings & bushes Inspect if reqd.
Parking brake (disc/drum ,shoe & operation) - C CCCCCCC
Wheel Alignment & Balancing - Inspect if reqd.
FINAL CHECKS
Bolt and nuts on chasis and body I I IIIIIII
Lubricate locks & hinges ILLLLLLLL
Check all electrical systems (Drive belts ,alterna-
tor)*
9
IIIIIIIII
Warning lights operation & GDS system check I IIIIIIII
Ext & int. lights, horn & gaugesIIIIIIIII
C : Clean and Replace if necessary
TR : Tyre Rotation L : Lubraicate I : Inspect and if necessary adjust,top-up, clean or replace
R : Replace

10-24
Maintenance
Engine oil and filter
The engine oil and filter should be
changed at the intervals specified in
the maintenance schedule. If the car
is being driven in severe conditions,
more frequent oil and filter changes are
required.
Drive belts
Inspect all drive belts for evidence
of cuts, cracks, excessive wear or oil
saturation and replace if necessary.
Drive belts should be checked
periodically for proper tension and
adjusted as necessary.
NOTICE
When you are inspecting the belt, place
the ignition switch in the LOCK/OFF or
ACC position.
Fuel filter
A clogged filter can limit the speed
at which the vehicle may be driven,
damage the emission system and cause
multiple issues such as hard starting.
If an excessive amount of foreign
matter accumulates in the fuel tank, the
filter may require replacement more
frequently.
After installing a new filter, run the
engine for several minutes, and check
for leaks at the connections.
We recommend that the fuel filter be
replaced by an authoized HYUNDAI
dealer.
Fuel lines, fuel hoses and
connections
Check the fuel lines, fuel hoses and
connections for leakage and damage.
We recommend that the fuel lines, fuel
hoses and connections be replaced by
an authoized HYUNDAI dealer.
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.
Vapor hose and fuel filler cap
The vapor hose and fuel filler cap should
be inspected at those intervals specified
in the maintenance schedule. Make sure
that a new vapor hose or fuel filler cap is
correctly replaced.
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS

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.

10-27
10
Brake hoses and lines
Visually check for proper installation,
chafing, cracks, deterioration and any
leakage. Replace any deteriorated or
damaged parts immediately.
Brake/clutch fluid (if equipped)
Check brake/clutch fluid level in the
brake fluid reservoir. The level should
be between “MIN” (Minimum) and
“MAX” (Maximum) marks on the side of
the reservoir. Use only hydraulic brake/
clutch fluid conforming to DOT 3 or 4
specification.
Parking brake
Inspect the parking brake system
including the parking brake lever and
cables.
Rear brake drums and linings
(if equipped)
Check the rear brake drums and linings
for scoring, burning, leaking fluid,
broken parts, and excessive wear.
Brake pads, calipers and discs
Check the pads for excessive wear, discs
for run out and wear, and calipers for
fluid leakage.
Suspension mounting bolts
Check the suspension connections for
looseness or damage. Retighten to the
specified torque.
Steering gear box, linkage &
boots/lower arm ball joint
With the vehicle stopped and engine
off, check for excessive free-play in the
steering wheel.
Check the linkage for bends or damage.
Check the dust boots and ball joints
for deterioration, cracks, or damage.
Replace any damaged parts.
Drive shafts and boots
Check the drive shafts, boots and
clamps for cracks, deterioration, or
damage. Replace any damaged parts
and, if necessary, repack the grease.
Air conditioning refrigerant
(if equipped)
Check the air conditioning lines and
connections for leakage and damage.