check engine Hyundai Elantra 2018 Owner's Manual

F7
Introduction
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NOTICE indicates a situation which, if
not avoided, could result in vehicle
damage. Your new vehicle is designed to obtain
maximum performance with UNLEADED
FUEL, as well as minimize exhaust emis-
sions and spark plug fouling.
Your new vehicle is designed to use only
unleaded fuel having an octane number
((R+M)/2) of 87 (Research Octane
Number 91) or higher. (Do not use
methanol blended fuels)
To prevent damage to the engine and
engine components, never add any
fuel system cleaning agents to the
fuel tank other than what has been
specified.
Consult an authorized HYUNDAI deal-
er for additional information.
Gasoline containing alcohol or
methanol
Gasohol, a mixture of gasoline and
ethanol (also known as grain alcohol) are
being marketed along with or instead of
leaded or unleaded gasoline. For exam-
ple, "E15" is a gasohol comprised of 15%
ethanol and 85% gasoline.
Do not use gasohol containing more than
15% ethanol, and do not use gasoline or
gasohol containing any methanol. Either
of these fuels may cause drivability prob-
lems and damage to the fuel system,
engine control system and emission con-
trol system.
Discontinue using gasohol of any kind if
drivability problems occur.
NOTICE
NOTICE
CAUTION indicates a hazardous sit-
uation which, if not avoided, could
result in minor or moderate injury.
CAUTION
•Do not "top off" after the nozzle
automatically shuts off when
refueling.
Always check that the fuel cap is
installed securely to prevent fuel
spillage in the event of an acci-
dent.
WARNING

2-44
Safety system of your vehicle
12. Emergency Fastening DeviceSystem
13. Occupant classification system
The SRSCM (Supplemental Restraint
System Control Module) continually
monitors all SRS components while the
ignition switch is in the ON position to
determine if a crash impact is severe
enough to require air bag deployment or
pre-tensioner seat belt deployment.
SRS warning light
The SRS (Supplement Restraint System)
air bag warning light on the instrument
panel displays the air bag symbol depict-
ed in the illustration. The system checks
the air bag electrical system for malfunc-
tions. The light indicates that there is a
potential malfunction with your air bag
system, which could include your side
and curtain air bags used for rollover pro-
tection. During a frontal collision, sensors will
detect the vehicle's deceleration. If the
rate of deceleration is high enough, the
control unit will inflate the front air bags.
The front air bags help protect the driver
and front passenger by responding to
frontal impacts in which seat belts alone
cannot provide adequate restraint. When
needed, the side air bags help provide
protection in the event of a side impact or
rollover.
Air bags are activated (able to inflate if
necessary) only when the ignition
switch is in the ON position.
Air bags inflate in the event of certain frontal or side collisions to help protect
the occupants from serious physical
injury.
Generally, air bags are designed to inflate based upon the severity of a col-
lision, its direction, etc. These two fac-
tors determine whether the sensors
produce an electronic deployment/
inflation signal.
If your SRS malfunctions, the air
bag may not inflate properly during
an accident increasing the risk of
serious injury or death.
If any of the following conditions
occur, your SRS is malfunctioning:
The light does not turn on for
approximately six seconds when
the ignition switch is in the ON
position.
The light stays on after illuminat-
ing for approximately six sec-
onds.
The light comes on while the
vehicle is in motion.
The light blinks when the engine
is running.
Have an authorized HYUNDAI deal-
er inspect the SRS as soon as pos-
sible if any of these conditions
occur.
WARNING

3-3
Convenient features of your vehicle
3
Remote Key (if equipped)
Your HYUNDAI uses a remote key, which
you can use to lock or unlock a door (and
trunk) and even start the engine.
1. Door Lock
2. Door Unlock
3. Trunk Unlock
4. Panic
Locking
To lock :
1. Close all doors, engine hood andtrunk.
2. Press the Door Lock button (1) on the remote key.
3. The hazard warning lights will blink and the chime will sound once if the
lock button is pressed once more with-
in four seconds.
4. Make sure the doors are locked by checking the position of the door lock
button inside the vehicle.
Information
After locking the doors, if you press the
Door Lock button again within four sec-
onds, the hazard warning lights will blink
and the horn will sound one time to con-
firm that the doors are locked.
Unlocking
To unlock:
1. Press the Door Unlock button (2) onthe remote key.
2. The driver’s door will unlock. The haz- ard warning lights will blink two times.
Two press unlock setting: If you press the Door Unlock button
again within four seconds, then all the
doors will unlock.
Two press unlock setting can be changed according to owner's prefer-
ence. Press and hold both Door Lock
and Door Unlock buttons at the same
time until hazard warning lights blink.
Now all doors will unlock when Door
Unlock button is pressed one time. To
change the setting back, repeat this
procedure.
Information
After unlocking the doors, the doors will
lock automatically after 30 seconds unless
a door is opened.
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Do not leave the keys in your vehi-
cle with unsupervised children.
Unattended children could place
the key in the ignition switch and
may operate power windows or
other controls, or even make the
vehicle move, which could result in
serious injury or death.
WARNING

3-6
Convenient features of your vehicle
If you suspect your remote key might
have sustained some damage, or you
feel your remote key is not working cor-
rectly contact an authorized HYUNDAI
dealer.
Information
An inappropriately disposed bat-tery can be harmful to the envi-
ronment and human health.
Dispose the battery according to
your local law(s) and regulation.
Smart Key (if equipped)
Your HYUNDAI uses a Smart Key, which
you can use to lock or unlock a door (and
trunk) and even start the engine.
1. Door Lock
2. Door Unlock
3. Trunk Unlock
4. Panic
Locking
To lock :
1. Close all doors, engine hood and trunk.
2. Either press the door handle button or press the Door Lock button (1) on the
smart key.
3. The hazard warning lights will blink and the chime will sound once.
4. Make sure the doors are locked by checking the position of the door lock
button inside the vehicle.
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3-16
Convenient features of your vehicle
Once the security system is set, opening
any door, the trunk, or the hood without
using the remote key or smart key will
cause the alarm to activate.
The Theft Alarm System will not set if the
hood, the trunk, or any door is not fully
closed. If the system will not set, check
the hood, the trunk, or the doors are fully
closed.
Do not attempt to alter this system or add
other devices to it.
Information
• Do not lock the doors until all passen-gers have left the vehicle. If the remain-
ing passenger leaves the vehicle when
the system is armed, the alarm will be
activated.
• If the vehicle is not disarmed with the remote key or smart key, open the doors
by using the mechanical key and place
the ignition switch in the ON position
(for remote key) or start the engine (for
smart key) by directly pressing the igni-
tion switch with the smart key.
• When the system is disarmed but a door or trunk is not opened within 30 sec-
onds, the system will be rearmed. The Driver Position Memory System is
provided to store and recall the following
memory settings with a simple button
operation.
- Driver's seat position
- Side view mirror position
- Instrument panel illumination intensity
If the battery is disconnected, the posi-
tion memory will be lost and the driving
positions must be stored in the system
again.
If the Driver Position Memory System
does not operate normally, have the sys-
tem checked by an authorized HYUNDAI
dealer.
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Never attempt to operate the driver
position memory system while the
vehicle is moving.
This could result in loss of control,
and an accident causing death,
serious injury, or property damage.
WARNING

3-18
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Convenient features of your vehicle
If the Electric Power Steering
System does not operate normally,
the warning light ( ) will illumi-
nate on the instrument cluster. You
may steer the vehicle, but it will
require increased steering efforts.
Take your vehicle to an authorized
HYUNDAI dealer and have the sys-
tem checked as soon as possible.
CAUTION
Easy Access Function
When exiting the vehicle the driver’s seat
will move rearward when the engine is
turned off and the shift lever in P (Park).
When entering the vehicle the driver’s
seat will move forward when the ignition
switch is placed to the ACC position.
You can activate or deactivate the Easy
Access Function from the User Settings
Mode on the LCD display.
For more information, refer to the
"LCD Display" section in this chapter.
Electric Power Steering (EPS)
The system assists you with steering the
vehicle. If the engine is turned off or if the
power steering system becomes inoper-
ative, you may still steer the vehicle, but
it will require increased steering effort.
Should you notice any change in the
effort required to steer during normal
vehicle operation, have the system
checked by an authorized HYUNDAI
dealer.
Information
The following symptoms may occur dur-
ing normal vehicle operation:
• The steering effort may be high immedi-
ately after placing the ignition switch in
the ON position.
This happens as the system performs the
EPS system diagnostics. When the diag-
nostics is completed, the steering wheel
will return to its normal condition.
• A click noise may be heard from the EPS relay after the ignition switch is in
the ON or OFF position.
• Motor noise may be heard when the vehicle is at a stop or at a low driving
speed.
• When you operate the steering wheel in low temperature, abnormal noise may
occur. If temperature rises, the noise will
disappear. This is a normal condition.
• When an error is detected from the EPS, the warning light will illuminate on the
instrument cluster and the steering
efforts may be increased. When the fol-
lowing symptoms occur, immediately
drive the vehicle to a safe area and
check it.
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3-46
Convenient features of your vehicle
Closing the hood
1. Before closing the hood, check the fol-lowing:
must be correctly installed.
bustible material must be removed
from the engine compartment.
2. Return the support rod to its clip to prevent it from ratting.
3. Lower the hood halfway (lifted approx- imately 12 inches (30 cm) from the
closed position) and push down to
securely lock in place. Then double
check to be sure the hood is secure.
If the hood can slightly be raised, it is
not securely locked. Open it again and
close it with more force.
Trunk
Opening the trunk
1. Make sure the shift lever is in P (Park).
2. Then do one of the following :
- Press the button on the trunk itselfwith the Smart Key in your posses-
sion.
- Use the mechanical key.
Before closing the hood, ensure
all obstructions are removed
from around the hood opening.
Always double check to be sure
that the hood is firmly latched
before driving away. Check there
is no hood open warning light or
message displayed on the instru-
ment cluster. Driving with the
hood opened may cause a total
loss of visibility, which might
result in an accident.
Do not move the vehicle with the
hood in the raised position, as
vision is obstructed, which might
result in an accident, and the
hood could fall or be damaged.
WARNING
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■ Outside

3-62
Convenient features of your vehicle
Parking Brake & Brake Fluid
Warning Light
Driving the vehicle with a warning
light ON is dangerous. If the
Parking Brake & Brake Fluid
Warning Light illuminates with the
parking brake released, it indicates
that the brake fluid level is low.
In this case, have your vehicle
inspected by an authorized
HYUNDAI dealer.
WARNING
Seat Belt Warning Light
This warning light informs the driver that
the seat belt is not fastened.
For more information, refer to the
"Seat Belts" in chapter 2.
Parking Brake & BrakeFluid Warning Light
This warning light illuminates:
Once you set the ignition switch or the
Engine Start/Stop button to the ON
position.
- It illuminates for approximately 3 sec-onds.
- It remains on if the parking brake is applied.
When the parking brake is applied.
When the brake fluid level in the reser- voir is low.
- If the warning light illuminates withthe parking brake released, it indi-
cates the brake fluid level in reservoir
is low.
If the brake fluid level in the reser-
voir is low:
1. Drive carefully to the nearest safe location and stop your vehicle.
2. With the engine stopped, check the brake fluid level immediately and add
fluid as required (For more informa-
tion, refer to "Brake Fluid" in chap-
ter 7). After adding brake fluid, check
all brake components for fluid leaks. If
a brake fluid leak is found, or if the
warning light remains on, or if the
brakes do not operate properly, do not
drive the vehicle. Have the vehicle
inspected by an authorized HYUNDAI
dealer.
Dual-diagonal braking system
Your vehicle is equipped with dual-diago-
nal braking systems. This means you still
have braking on two wheels even if one
of the dual systems should fail.
With only one of the dual systems work-
ing, more than normal pedal travel and
greater pedal pressure is required to stop
the vehicle. Also, the vehicle will not stop in as short
a distance with only a portion of the
brake system working.
If the brakes fail while you are driving,
shift to a lower gear for additional engine
braking and stop the vehicle as soon as
it is safe to do so.

3-64
Convenient features of your vehicle
Malfunction IndicatorLamp (MIL)
This warning light illuminates:
Once you turn the ignition switch or
Engine Start/Stop button to the ON
position.
- It illuminates for approximately 3 sec-onds and then goes off.
When there is a malfunction with the emission control system.
In this case, have your vehicle inspect-
ed by an authorized HYUNDAI dealer.
- Malfunction Indicator Lamp (MIL)
Driving with the Malfunction Indicator
Lamp (MIL) on may cause damage to
the emission control systems which
could affect drivability and/or fuel
economy.
If the Malfunction Indicator Lamp
(MIL) illuminates, potential catalytic
converter damage is possible which
could result in loss of engine power.
In this case, have your vehicle
inspected by an authorized HYUNDAI
dealer.
Charging System Warning Light
If this warning light comes on while the
engine is running, the battery is not being
charged. Immediately turn off all electri-
cal accessories. Try not to use electrical-
ly operated controls, such as the power
windows. Keep the engine running; stop-
ping then restarting the engine will quick-
ly discharge the battery.
If there is a malfunction with either
the alternator or electrical charging
system:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. Turn the engine off and check the alternator drive belt for looseness or
breakage.
If the belt is adjusted properly, there
may be a problem in the electrical
charging system.
In this case, have your vehicle
inspected by an authorized HYUNDAI
dealer.
Engine Oil PressureWarning Light
This warning light illuminates:
Once you turn the ignition switch or the
Engine Start/Stop button to the ON
position.
- It remains on until the engine is start-ed.
When the engine oil pressure is low.
If the engine oil pressure is low:
1. Drive carefully to the nearest safe location and stop your vehicle.
2. Turn the engine off and check the engine oil level (For more informa-
tion, refer to "Engine Oil" in chapter
7). If the level is low, add oil as
required.
If the warning light remains on after
adding oil and restarting the engine or
if oil is not available, turn off the
engine. There is a mechanical concern
that needs to be repaired before you
can continue driving. In this case,
have your vehicle inspected by an
authorized HYUNDAI dealer.
NOTICE
NOTICE
NOTICE

3-65
Convenient features of your vehicle
3
- Engine Oil Pressure Warning light
To prevent severe engine damage,
after the Engine Oil Pressure Warning
Light is illuminated and as soon as it
is safe to do so, turn the engine off
and check the oil level.
If the oil level is low, fill the engine oil
to the proper level and start the
engine again. If the light stays on with
the engine running, turn the engine off
immediately.
In this case, have your vehicle
inspected by an authorized HYUNDAI
dealer.
Low Fuel LevelWarning Light
This warning light illuminates:
When the fuel tank is nearly empty. Add
fuel as soon as possible.
- Low Fuel Level
Driving with the Low Fuel Level warn-
ing light on or with the fuel level below
"E" can cause the engine to misfire
and damage the catalytic converter.
Low Tire PressureWarning Light
This warning light illuminates:
Once you turn the ignition switch or the
Engine Start/Stop button to the ON
position.
- It illuminates for approximately 3 sec-onds and then goes off.
When one or more of your tires are sig- nificantly underinflated (The location of
each underinflated tire is displayed on
the supervision cluster LCD display).
For more information, refer to "Tire
Pressure Monitoring System (TPMS)"
in chapter 6.
NOTICE
NOTICE