check engine Hyundai Elantra 2018 Service Manual

6-9
What to do in an emergency
6
If any of the below happens, have
the system checked by an author-
ized HYUNDAI dealer.
1. The Low Tire Pressure TPMSMalfunction Indicator does not
illuminate for 3 seconds when
the ignition switch is placed to
the ON position or engine is
running.
2. The TPMS Malfunction Indicator remains illuminated after blink-
ing for approximately 1 minute.
3. The Low Tire Pressure LCD dis- play remains illuminated.
Low Tire Pressure
Telltale
Low Tire Pressure LCD
Display with Position Indicator
When the tire pressure monitoring
system warning indicators are illumi-
nated and the warning message is
displayed on the cluster LCD display,
one or more of your tires is signifi-
cantly under-inflated. The LCD posi-
tion indicator will indicate which tire
is significantly under-inflated by illu-
minating the corresponding position
light. If any of your tire pressures are indi-
cated as being low, immediately
reduce your speed, avoid hard cor-
nering, and anticipate increased
stopping distances. You should stop
and check your tires as soon as pos-
sible. Inflate the tires to the proper
pressure as indicated on the vehi-
cle’s placard or tire inflation pressure
label located on the driver's side cen-
ter pillar outer panel.
If you cannot reach a service station
or if the tire cannot hold the newly
added air, replace the low pressure
tire with the spare tire.
The Low Tire Pressure LCD position
indicator will remain on and the
TPMS Malfunction Indicator may
blink for one minute and then remain
illuminated until you have the low
pressure tire repaired and replaced
on the vehicle.
The spare tire is not equipped with
a tire pressure sensor.
NOTICE
NOTICE
■Supervision cluster
(Type A, C)■Supervision cluster
(Type B)
OAD045121N/OAD065023N

7
Maintenance
7
Maintenance
Engine Compartment .............................................7-3
Maintenance Services ...........................................7-4
Owner's Responsibility .....................................................7-4
Owner Maintenance Precautions..................................7-4
Owner Maintenance ..............................................7-4
Owner Maintenance Schedule .......................................7-5
Scheduled Maintenance Services........................7-6
Normal Maintenance Schedule (Nu 2.0 MPI) .............7-7
Maintenance Under Severe Usage Conditions
(Nu 2.0 MPI)......................................................................7-\
10
Severe Driving Conditions .............................................7-11
Normal Maintenance Schedule (Gamma 1.6 T-GDI) ..7-12
Maintenance Under Severe Usage Conditions
(Gamma 1.6 T-GDI) .........................................................7-15
Severe Driving Conditions .............................................7-16
Explanation of Scheduled Maintenance Items.. 7-17
Engine Oil ..............................................................7-19
Checking the Engine Oil Level .....................................7-19
Checking the Engine Oil and Filter .............................7-20
Engine Coolant .....................................................7-21
Checking the Engine Coolant Level ............................7-21
Changing Engine Coolant ..............................................7-23
Brake/Clutch Fluid ...............................................7-23
Checking the Brake/Clutch Fluid Level .....................7-23
Washer Fluid .........................................................7-24
Checking the Washer Fluid Level................................7-24
Parking Brake .......................................................7-25
Checking the Parking Brake .........................................7-25
Air Cleaner ............................................................7-25
Filter Replacement ..........................................................7-25
Climate Control Air Filter ....................................7-26
Filter Inspection ...............................................................7-26
Wiper Blades.........................................................7-28
Blade Inspection ..............................................................7-28
Blade Replacement .........................................................7-28
Battery...................................................................7-30
For Best Battery Service ..............................................7-31
Battery Recharging ........................................................7-31
Reset Features.................................................................7-32
7

7
Tires and Wheels .................................................7-33
Tire Care ........................................................................\
....7-33
Recommended Cold Tire Inflation Pressures ...........7-34
Check Tire Inflation Pressure ......................................7-35
Tire Rotation...................................................................\
..7-36
Wheel Alignment and Tire Balance ............................7-37
Tire Replacement ............................................................7-37
Wheel Replacement ........................................................7-38
Tire Traction .....................................................................7-3\
8
Tire Maintenance ............................................................7-39
Tire Sidewall Labeling ....................................................7-39
Tire Terminology and Definitions................................7-43
All Season Tires ...............................................................7-46
Summer Tires ...................................................................7-46
Snow Tires ........................................................................\
7-46
Radial-Ply Tires ...............................................................7-46
Low Aspect Ratio Tires..................................................7-47
Fuses ......................................................................7-\
48
Instrument Panel Fuse Replacement..........................7-49
Engine Compartment Panel Fuse Replacement.......7-50
Fuse/Relay Panel Description ......................................7-53
Light Bulbs ............................................................7-59
Headlamp, Parking Lamp,
Turn Signal Lamp and Side Marker ............................7-59
Side Repeater Lamp Replacement ..............................7-70
Rear Combination Light Bulb Replacement ..............7-70
High Mounted Stop Light Replacement ....................7-74
License Plate Light Bulb Replacement ......................7-74
Interior Light Bulb Replacement .................................7-75
Appearance Care..................................................7-76
Exterior Care ....................................................................7-76\
Interior Care .....................................................................7-8\
0
Emission Control System ....................................7-83
Crankcase Emission Control System ..........................7-83
Evaporative Emission Control System Including
Onboard Refueling Vapor Recovery (ORVR)............7-83
Exhaust Emission Control System ..............................7-84
California Perchlorate Notice.............................7-86

7-5
7
Maintenance
The following lists are vehicle checks and
inspections that should be performed by
the owner or an authorized HYUNDAI
dealer 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 vehicle
checks are generally not covered by war-
ranties and you may be charged for
labor, parts and lubricants used.Owner Maintenance Schedule
When you stop for fuel:
Check the engine oil level.
Check coolant level in the enginecoolant reservoir.
Check the windshield washer fluid level.
Check for low or under-inflated tires.
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 if there is 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 trav-
eling 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 oper- ation of your transmission occurs,
check the transmission fluid level.
Check the automatic transmission/ dual clutch transmission P (Park) func-
tion.
Check the parking brake.
Check for fluid leaks under your vehicle (water dripping from the air condition-
ing system during or after use is nor-
mal).
Be careful when checking your
engine coolant level when the
engine is hot. This may result in
coolant being blown out of the
opening and cause serious burns
and other injuries.
WARNING

7-6
Maintenance
At least monthly:
Check coolant level in the enginecoolant reservoir.
Check the operation of all exterior lights, including the brake lights, 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 radiator, heater and air condi-
tioning hoses for leaks or damage.
Check windshield washer spray and wiper operation. Clean wiper blades
with clean cloth dampened with wash-
er fluid.
Check headlamp alignment.
Check muffler, exhaust pipes, shields and clamps.
Check the seat belts for wear and func- tion.
At least once a year:
Clean body and door drain holes.
Lubricate door hinges and hoodhinges.
Lubricate door and hood locks and latches.
Lubricate door rubber weather strips.
Lubricate door checker.
Check the air conditioning system.
Inspect and lubricate automatic trans- mission linkage and controls.
Clean the battery and terminals.
Check the brake fluid level. Follow Normal Maintenance Schedule if
the vehicle is usually operated where
none of the following conditions apply. If
any of the following conditions apply, you
must follow the Maintenance Under
Severe Usage Conditions.
Repeated short distance driving.
Driving in dusty conditions or sandy
areas.
Extensive use of brakes.
Driving in areas where salt or other corrosive materials are used.
Driving on rough or muddy roads.
Driving in mountainous areas.
Extended periods of idling or low speed operation.
Driving for a prolonged period in cold temperatures and/or extremely humid
climates.
More than 50% driving in heavy city traffic during hot weather above 90°F
(32°C).
For additional information or assistance
see your authorized HYUNDAI dealer.
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7-17
7
Maintenance
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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 fre-
quent oil and filter changes are required.
Drive Belts
Inspect all drive belts for evidence of
cuts, cracks, excessive wear or oil satu-
ration and replace if necessary. Drive
belts should be checked periodically for
proper tension and adjusted as neces-
sary.
Fuel Filter
A clogged-up fuel filter may limit the vehi-
cle driving speed, damage the emission
system, and cause the hard starting.
When a considerable amount of foreign
substances are accumulated in the fuel
tank, the fuel filter should be replaced.
Upon installing a new fuel filter, operate
the engine for several minutes, and
check the connections for any leakages.
Fuel filters should be installed by an
authorized HYUNDAI dealer.
Fuel Lines, Fuel Hoses and
Connections
Check the fuel lines, fuel hoses and con-
nections for leakage and damage. Have
an authorized HYUNDAI dealer replace
any damaged or leaking parts immedi-
ately.
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
a new vapor hose or fuel filler cap is cor-
rectly replaced.
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 indi-
cate 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 dam-
age or mechanical wear. Inspect all hose connections, such as
clamps and couplings, to make sure they
are secure, and that no leaks are pres-
ent. Hoses should be replaced immedi-
ately if there is any evidence of deterio-
ration or damage.
Air Cleaner Filter
A genuine HYUNDAI air cleaner filter is
recommended when the filter is
replaced.
Spark Plugs
Make sure to install new spark plugs of
the correct heat range.
Cooling System
Check cooling system components, such
as radiator, coolant reservoir, hoses and
connections for leakage and damage.
Replace any damaged parts.
Engine Coolant
The coolant should be changed at the
intervals specified in the maintenance
schedule.

7-18
Maintenance
Automatic Transmission Fluid
(if equipped)
Automatic transmission fluid should not
be checked under normal usage condi-
tions. But in severe conditions, the fluid
should be changed at an authorized
HYUNDAI dealer in accordance to the
scheduled maintenance at the beginning
of this chapter.
Automatic transmission fluid color is
basically red.
As the vehicle is driven, the automatic
transmission fluid will begin to look
darker. This is a normal condition and
you should not judge the need to
replace the fluid based upon the
changed color.
Dual Clutch Transmission
Fluid (if equipped)
Inspect the dual clutch transmission fluid
according to the maintenance schedule.
Manual Transmission Fluid
(if equipped)
Inspect the manual transmission fluid
according to the maintenance schedule.
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
Check brake/clutch fluid level in the
brake/clutch fluid reservoir. The level
should be between the MIN and the MAX
marks on the side of the reservoir. Use
only hydraulic brake/clutch fluid conform-
ing to DOT 3 or DOT 4 specification.
Parking Brake
Inspect the parking brake system includ-
ing the parking brake pedal and cables.
Brake Discs, Pads, Calipers
and Rotors
Check the pads for excessive wear, discs
for run out and wear, and calipers for fluid
leakage.
Exhaust Pipe and Muffler
Visually inspect the exhaust pipes, muf-
fler and hangers for cracks, deterioration,
or damage. Start the engine and listen
carefully for any exhaust gas leakage.
Tighten connections or replace parts as
necessary.
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 the 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 nec-
essary, repack the grease.
Air Conditioning Refrigerant
Check the air conditioning lines and con-
nections for leakage and damage.
NOTICE
The use of a non-specified fluid
could result in transmission mal-
function and failure. Use only the
specified automatic transmission
fluid (refer to "Recommended
Lubricants and Capacities" in
chapter 8).
CAUTION

7-19
7
Maintenance
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Checking the Engine Oil Level
1. Follow all of the oil manufacturer’s pre-
cautions.
2. Be sure the vehicle is on the level ground in P (Park) with the parking
brake set. If possible, block the
wheels.
3. Turn the engine on and allow the engine to reach normal operating tem-
perature.
4. Turn the engine off and wait about five minutes for the oil to return to the oil
pan.
5. Pull the dipstick out, wipe it clean, and re-insert it fully.
6. Pull the dipstick out again and checkthe level. The level should be between
F and L.
7. If it is near or at L, add enough oil to bring the level to F. To prevent damage to your engine:
Do not overfill with engine oil. Add
oil in small quantities and recheck
level to ensure engine is not over-
filled.
Do not spill engine oil when adding or changing engine oil. Use a funnel
to help prevent oil from being
spilled on engine components. Wipe
off spilled oil immediately.
NOTICE
OAD076121
OAD075062L
■ 1.6 T-GDI
■2.0 MPI

7-20
Maintenance
Use only the specified engine oil
(refer to "Recommended Lubricants
and Capacities" in chapter 8).
Checking the Engine Oil and
Filter
Have engine oil and filter changed by an
authorized HYUNDAI dealer according to
the Maintenance Schedule at the begin-
ning of this chapter.
NOTICE
CALIFORNIA PROPOSITION 65
WARNING
Engine oil contains chemicals
known to the State of California to
cause cancer, birth defects and
reproductive harm. Used engine oil
may cause irritation or cancer of
the skin if left in contact with the
skin for prolonged periods of time.
Always protect your skin by wash-
ing your hands thoroughly with
soap and warm water as soon as
possible after handling used oil.
WARNING
OAD076122
OAD075063L
■1.6 T-GDI
■2.0 MPI

7-21
7
Maintenance
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The high-pressure cooling system has a
reservoir filled with year-round antifreeze
coolant. The reservoir is filled at the fac-
tory.
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.Checking the Engine Coolant
Level
Check the condition and connections of
all cooling system hoses and heater
hoses. Replace any swollen or deterio-
rated 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, we rec-
ommend that you see an authorized
HYUNDAI dealer for a cooling system
inspection.
Recommended engine coolant
When adding coolant, use only deion-
ized water, distilled water or soft 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 dam-
age.
The engine in your vehicle has alu- minum engine parts and must be pro-
tected by an ethylene-glycol with phos-
phate based coolant to prevent corro-
sion 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.OAD076125
OAD075008
■ 1.6 T-GDI
■2.0 MPI