2018 Hyundai Elantra fuel

F2Your HYUNDAI should not be modified in any way. Such
modifications may adversely affect the performance,
safety or durability of your HYUNDAI and may, in addi-
tion, violate conditions of the limited warranties covering
the vehicle. Certain modifications may also be in viola-
tion of regulations established by the U.S. Department
of Transportation and other federal or state agencies.
Your vehicle is equipped with electronic fuel injection
and other electronic components. It is possible for an
improperly installed/adjusted two-way radio or cellular
telephone to adversely affect electronic systems. For
this reason, we recommend that you carefully follow the
radio manufacturer’s instructions or consult your
HYUNDAI dealer for precautionary measures or special
instructions if you choose to install one of these devices.
CAUTION: MODIFICATIONS TO
YOUR HYUNDAI
TWO-WAY RADIO OR CELLULARTELEPHONE INSTALLATION
This manual includes information titled as DANGER,
WARNING, CAUTION and NOTICE.
These titles indicate the following:
SAFETY AND VEHICLE DAMAGE WARNING
DANGER indicates a hazardous situation which,
if not avoided, will result in death or serious
injury.
DANGER
WARNING indicates a hazardous situation which,
if not avoided, could result in death or serious
injury.
CAUTION indicates a hazardous situation which,
if not avoided, could result in minor or moderate
injury.
CAUTION
NOTICE indicates a situation which, if not avoided,
could result in vehicle damage.
NOTICE
WARNING

F4
INTRODUCTION
Congratulations, and thank you for choosing HYUNDAI. We are pleased to welcome you to the growing number of distinguished
people who drive HYUNDAIS. We are very proud of the advanced engineering and high-quality construction of each HYUNDAI we
build.
Your Owner’s Manual will introduce you to the features and operation of your new HYUNDAI. To become familiar with your new
HYUNDAI, so that you can fully enjoy it, read this Owner’s Manual carefully before driving your new vehicle.
This manual contains important safety information and instructions intended to familiarize you with your vehicle’s controls and safe-
ty features so you can safely operate your vehicle.
This manual also contains information on maintenance designed to enhance safe operation of the vehicle. It is recommended that
all service and maintenance on your car be performed by an authorized HYUNDAI dealer. HYUNDAI dealers are prepared to pro-
vide high-quality service, maintenance and any other assistance that may be required.
This Owner’s Manual should be considered a permanent part of your vehicle, and should be kept in the vehicle so you can refer
to it at any time. The manual should stay with the vehicle if you sell it to provide the next owner with important operating, safety
and maintenance information.
HYUNDAI MOTOR AMERICA
Copyright 2018 HYUNDAI Motor America. All rights reserved. No part of this publication may be reproduced, stored in any retrieval
system or transmitted in any form or by any means without the prior written permission of HYUNDAI Motor America. Severe engine and transmission damage may result from the use of poor quality fuels and lubricants that do not meet
HYUNDAI specifications. You must always use high quality fuels and lubricants that meet the specifications li\
sted on
Page 8-7 in the Vehicle Specifications section of the Owner's Manual.
CAUTION

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

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

F9
Introduction
For customers who do not use TOP Tier
Detergent Gasoline regularly, and have
problems starting or the engine does not
run smoothly, detergent-based fuel addi-
tives that you can purchase separately
may be added to the gasoline. If TOP
TIER Detergent Gasoline is not available,
one bottle of additive added to the fuel
tank according to the maintenance
schedule is recommended (refer to the
Maintenance Schedule in chapter 7).
Additives are available from your author-
ized HYUNDAI dealer along with infor-
mation on how to use them. Do not mix
other additives.
Operation in foreign countries
If you are going to drive your vehicle in
another country, be sure to:
Observe all regulations regarding reg-istration and insurance.
Determine that acceptable fuel is avail- able. This vehicle should not be modified.
Modification of your vehicle could
affect its performance, safety or dura-
bility and may even violate governmen-
tal safety and emissions regulations.
In addition, damage or performance
problems resulting from any modifica-
tion may not be covered under warran-
ty.
If you use unauthorized electronic devices, it may cause the vehicle to
operate abnormally, wire damage, bat-
tery discharge and fire. For your safety,
do not use unauthoriz ed electronic
devices. By following a few simple precautions for
the first 600 miles (1,000 km) you may
add to the performance, economy and
life of your vehicle.
Do not race the engine.
While driving, keep your engine speed
(rpm, or revolutions per minute)
between 2,000 rpm and 4,000 rpm.
Do not maintain a single speed for long periods of time, either fast or slow.
Varying engine speed is needed to
properly break-in the engine.
Avoid hard stops, except in emergen- cies, to allow the brakes to seat prop-
erly.
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1-3
Your vehicle at a glance
1
1. Door lock ..............................................3-11
2. Trunk ......................................................3-46
3. Fuel filler door ......................................3-514. Side view mirror ....................................3-33
5. Antenna ..................................................4-2
6. Rear combination lamp ........................7-70
OAD015002N
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Rear view
The actual shape may differ from the illustration.

1-4
Your vehicle at a glance
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1. Door lock/unlock button ........................3-12
2. Side view mirror control switch ..............3-35
3. Central door lock switch ........................3-13
4. Power window switches ........................3-37
5. Power window lock switch......................3-40
6. Fuel filler door release lever ..................3-51
7. Instrument panel illumination control
switch ....................................................3-56
8. Blind spot detection(BSD) system button* ....................................................5-45
9. Lane keeping assist system (LKAS) button * ..................................................5-62
10. ESC (Electronic Stability Control) OFF button ..........................................5-38
11. Trunk lid release lever ..........................3-47
12. Fuse panel ..........................................7-49
13. Steering wheel ....................................3-18
14. Steering wheel tilt/telescope lever ......3-19
15. Light control/Turn signals ....................3-98
16. Wiper/Washer ....................................3-108
17. Seat........................................................2-3
18. Hood release lever ..............................3-45
19. Brake pedal ..........................................5-33
20. Accelerator pedal
* : if equipped
OAD015003N
The actual shape may differ from the illustration.

Convenient features of your vehicle
Accessing Your Vehicle .........................................3-3
Remote Key........................................................................\
.3-3
Smart Key ........................................................................\
....3-6
Immobilizer System .........................................................3-10
Door Locks ............................................................3-11
Operating Door Locks from Outside the Vehicle ....3-11
Operating Door Locks from Inside the Vehicle .......3-12
Auto Door Lock/Unlock Features ...............................3-14
Child-Protector Rear Door locks ................................3-15
Theft-Alarm System ............................................3-15
Driver Position Memory System ........................3-16
Storing Positions into Memory ....................................3-17
Easy Access Function ....................................................3-18
Steering Wheel .....................................................3-18
Electric Power Steering (EPS) .....................................3-18
Tilt Steering/Telescope Steering.................................3-19
Horn ........................................................................\
............3-19
Mirrors ...................................................................3-20
Inside Rearview Mirror ..................................................3-20
Side View Mirrors ...........................................................3-33
Reverse Parking Aid Function......................................3-36
Windows ................................................................3-37
Power Windows ...............................................................3-38
Sunroof..................................................................3-41
Sunroof opening and closing .......................................3-42
Sliding the sunroof .........................................................3-42
Tilting the sunroof ..........................................................3-43
Sunshade ........................................................................\
...3-43
Resetting the sunroof ....................................................3-44
Exterior Features .................................................3-45
Hood ........................................................................\
...........3-45
Trunk ........................................................................\
..........3-46
Smart Trunk ......................................................................3-\
48
Fuel Filler Door ................................................................3-51
Instrument Cluster ...............................................3-54
Instrument Cluster Control............................................3-56
Gauges ........................................................................\
.......3-56
Warning and Indicator lights ........................................3-61
LCD Display Messages ...................................................3-71
LCD Display (For Supervision Cluster) .............3-80
LCD Display Control ........................................................3-80
LCD Display Modes .........................................................3-81
User Settings Mode ........................................................3-85
Trip Computer .......................................................3-90
Conventional Cluster.......................................................3\
-90
Supervision Cluster .........................................................3-94
3