2018 Hyundai Elantra malfunction

F8
Introduction
"E85" fuel is an alternative fuel com-
prised of 85 percent ethanol and 15 per-
cent gasoline, and is manufactured
exclusively for use in Flexible Fuel
Vehicles. "E85" is not compatible with
your vehicle. Use of "E85" may result in
poor engine performance and damage to
your vehicle's engine and fuel system.
HYUNDAI recommends that customers
do not use fuel with an ethanol content
exceeding 15 percent.
To prevent damage to your vehicle’s
engine and fuel system:
Never use gasohol which containsmethanol.
Never use gasohol containing more than 15% ethanol.
Never use leaded fuel or leaded gasohol.
Never use "E85" fuel.
Your New Vehicle Limited Warranty
does not cover damage to the fuel
system or any performance problems
caused by the use of "E85" fuel.Using Fuel Additives (except Detergent Fuel Additives)
Using fuel additives such as:
- Silicone fuel additive
- Ferrocene (iron-based) fuel additive
- Other metallic-based fuel additives
may result in cylinder misfire, poor accel-
eration, engine stalling, damage to the
catalyst, or abnormal corrosion, and may
cause damage to the engine resulting in
a reduction in the overall life of the pow-
ertrain.
- The Malfunction Indicator Lamp (MIL)
may illuminate.
Damage to the fuel system or per-
formance problem caused by the use
of these fuels or fuel additives may
not be covered by your New Vehicle
Limited Warranty.
Gasoline containing MMT
Some gasoline contains harmful man-
ganese-based fuel additives such as
MMT (Methylcyclopentadienyl
Manganese Tricarbonyl).
HYUNDAI does not recommend the use
of gasoline containing MMT.
This type of fuel can reduce vehicle per-
formance and affect your emission con-
trol system.
The malfunction indicator lamp on the
cluster may come on.
Detergent Fuel Additives
HYUNDAI recommends that you use
good quality gasolines treated with deter-
gent additives such as TOP TIER
Detergent Gasoline, which help prevent
deposit formation in the engine. These
gasolines will help the engine run clean-
er and enhance performance of the
Emission Control System. For more infor-
mation on TOP TIER Detergent
Gasoline, please go to the website
(www
.toptiergas.com).
NOTICE
NOTICE

2-7
Safety system of your vehicle
2
Power adjustment (for driver's seat, if equipped)
The front seat can be adjusted by using
the control switches located on the out-
side of the seat cushion. Before driving,
adjust the seat to the proper position so
that you can easily control the steering
wheel, foot pedals and controls on the
instrument panel.
To prevent damage to the seats:
Always stop adjusting the seats
when the seat has been adjusted as
far forward or rearward as possible.
Do not adjust the seats longer than necessary when the engine is
turned off. This may result in unnec-
essary battery drain.
Do not operate two or more seats at the same time. This may result in an
electrical malfunction.
Forward and rearward adjustment
To move the seat forward or rearward:
1. Push the control switch forward or rearward.
2. Release the switch once the seat reaches the desired position.
Seatback angle
To adjust the seatback:
1. Rotate the top of control switch for-ward or rearward.
2. Release the switch once the seatback reaches the desired position.
NOTICE
NEVER allow children in the vehicle
unattended. The power seats are
operable when the engine is turned
off.
WARNING
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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

2-49
Safety system of your vehicle
2
Always be sure that you and all vehicle
occupants are seated properly and wear-
ing the seat belt properly for the most
effective protection by the air bag and the
seat belt.
The OCS may not function properly if the
passenger takes actions which can affect
the classification system. These include:
Failing to sit in an upright position.
Leaning against the door or centerconsole.
Sitting towards the sides of the front of the seat.
Putting their legs on the dashboard or resting them on other locations which
reduce the passenger weight on the
front seat.
Wearing the seat belt improperly.
Reclining the seatback.
Wearing a thick cloth like ski wear or hip protection wear.
Putting an additional thick cushion on the seat.
Putting electrical devices (e.g. note- book, satellite radio) on the seat with
inverter charging.Condition and operation in the front passenger Occupant Classification
System
Condition detected by the
occupant classification system
Indicator/Warning lightDevices
"PASSENGER
AIR BAG OFF" indicator lightSRS
warning lightFront passenger
air bag
1. Adult *1OffOffActivated
2. Infant *2or child restraint
system with 12 months old *3*4 OnOffDeactivated
3. Unoccupied OnOffDeactivated
4. Malfunction in the systemOffOnActivated
*1The system judges a person of adult size as an adult. When a smaller adult sits in the front
passenger seat, the system may recognize him/her as a child depending on his/her physique
and posture.
*
2Do not allow children to ride in the front passenger seat. When a larger child who has out- grown a child restraint system sits in the front passenger seat, the system may recognize
him/her as an adult depending upon his/her physique or sitting position.
*
3Never install a child restraint system on the front passenger seat.
*4The PASSENGER AIR BAG "OFF" indicator may turn on or off when a child above 12 months
to 12 years old (with or without child restraint system) sits in the front passenger seat. This is
a normal condition.

2-51
Safety system of your vehicle
2
ODH035900K
ODH035901K
ODH035902K
ODH035903K
Do not sit on the passenger
seat wearing heavily padded
clothes such as ski wear and
hip protector.
Do not use car seat acces-
sories such as thick blan-
kets and cushions which
cover up the car seat sur-
face.
Do not place electronic
devices such as laptops,
DVD player, or conductive
materials such as water bot-
tles on the passenger seat.
Do not use electronic
devices such as laptops and
satellite radios which use
inverter chargers.
If large quantity of liquid has
been spilled on the passen-
ger seat, the air bag warning
light may illuminate or mal-
function.
Therefore, make sure the
seat has been completely
dried before driving the vehi-
cle.
Do not place sharp objects on the front passenger seat. These may damage the occupant detection system, if they
puncture the seat cushion.
Do not place any items under the front passenger seat.
When changing or replacing the seat or seat cover, use original items only. The OCS has been developed based on
using original HYUNDAI car seats only. Altering or changing the authentic parts may result in system malfunction
and increase risk of injury when in collision. Any of the above could interfere with the proper operation of the OCS
sensor thereby increasing the risk of an injury in an accident.
(Continued)

3-8
Convenient features of your vehicle
Trunk opening
To open:
1. Carry the smart key.
2. Either press the trunk handle button orpress and hold the Trunk Unlock but-
ton (3) on the smart key for more than
one second.
3. The hazard warning lights will blink two times.
Once the trunk is opened and then
closed, the trunk will lock automatically.
Information
The trunk handle button will only operate
when the smart key is within 28 inches (0.7
m) from the trunk handle.
Panic button
Press and hold the Panic button (4) for
more than one second. The horn sounds
and hazard warning lights blink for about
30 seconds. To cancel the panic mode,
press any button on the Smart Key.
Start-up
You can start the engine without inserting
the key.
For more information, refer to the
"Engine Start/Stop Button" section in
chapter 5.
To prevent damaging the smart key:
Keep the smart key away from any liquid or fire. Internal circuits may
malfunction if the inside of the
remote key gets damp (from liquids
or moisture) or if it is heated. This
can exclude the remote key from
warranty coverage.
Avoid dropping or throwing the smart key.
Protect the smart key from extreme temperatures.
Always have the smart key with you when leaving the vehicle. If the
smart key is left near the vehicle, the
vehicle battery may be discharged.
Mechanical key
If the Smart Key does not operate nor-
mally, you can lock or unlock the door by
using the mechanical key.
Press and hold the release button (1)
and remove the mechanical key (2).
Insert the mechanical key into the key
hole on the door.
To reinstall the mechanical key, put the
key into the hole and push it until a click
sound is heard.
NOTICE
i
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3-10
Convenient features of your vehicle
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(s).
Immobilizer System
(if equipped)
The immobilizer system protects your
vehicle from theft. If an improperly coded
key (or other device) is used, the
engine’s fuel system is disabled.
When the ignition switch is placed in the
ON position, the immobilizer system indi-
cator should come on briefly, then go off.
If the indicator starts to blink, the system
does not recognize the coding of the key.
Place the ignition switch to the
LOCK/OFF position, then place the igni-
tion switch to the ON position again.
The system may not recognize your key’s
coding if another immobilizer key or other
metal object (i.e., key chain) is near the
key. The engine may not start because
the metal may interrupt the transponder
signal from transmitting normally. If the system repeatedly does not recog-
nize the coding of the key, it is recom-
mended that you contact your HYUNDAI
dealer.
Do not attempt to alter this system or add
other devices to it. Electrical problems
could result that may make your vehicle
inoperable.
The transponder in your key is an
important part of the immobilizer sys-
tem. It is designed to give years of
trouble-free service, however you
should avoid exposure to moisture,
static electricity and rough handling.
Immobilizer system malfunction could
occur.
Information
This device complies with Part 15 of the
FCC rules.
Operation is subject to the following three
conditions:
1. This device may not cause harmful
interference, and
2. This device must accept any interfer- ence received, including interference
that may cause undesired operation.
3. Changes or modifications not expressly approved by the party responsible for
compliance could void the user's
authority to operate the device.
i
NOTICE
i
In order to prevent theft of your
vehicle, do not leave spare keys
anywhere in your vehicle. Your
immobilizer password is a cus-
tomer unique password and should
be kept confidential.
WARNING

3-19
Convenient features of your vehicle
3
Tilt Steering/Telescope Steering
Adjust the steering wheel so it points
toward your chest, not toward your face.
Make sure you can see the instrument
cluster warning lights and gauges. After
adjusting, push the steering wheel both
up and down to be certain it is locked in
position. Always adjust the position of the
steering wheel before driving.To change the steering wheel angle and
height:
1. Pull down the lock-release lever (1).
2. Adjust the steering wheel to thedesired angle (2) and height (3).
3. Pull up the lock-release lever to lock the steering wheel in place.
Information
After adjustment, sometimes the lock
release lever may not lock the steering
wheel. It is not a malfunction. This occurs
when two gears are not engaged correctly.
In this case, adjust the steering wheel
again and then lock the steering wheel.
Horn
To sound the horn, press the area indi-
cated by the horn symbol on your steer-
ing wheel (see illustration). The horn will
operate only when this area is pressed.
Do not strike the horn severely to
operate it, or hit it with your fist. Do
not press on the horn with a sharp-
pointed object.
NOTICE
i
NEVER adjust the steering wheel
while driving. This may cause loss
of vehicle control resulting in an
accident.
WARNING OAD045006
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