2018 Hyundai Sonata gas type

F8
Introduction
"E85" fuel is an alternative fuel com-
prised of 85 percent ethanol and 15
percent gasoline, and is manufac-
tured exclusively for use in Flexible
Fuel Vehicles. "E85" is not compati-
ble with your vehicle. Use of "E85"
may result in poor engine perform-
ance and damage to your vehicle's
engine and fuel system. HYUNDAI
recommends that customers do not
use fuel with an ethanol content
exceeding 10 percent.
To prevent damage to your vehicle’s
engine and fuel system:
Never use gasohol which con- tains methanol.
Never use gasohol containing more than 10% 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 perform-
ance problems caused by the use
of "E85" fuel.
Other fuels
Using fuels such as;
- Silicone (Si) contained fuel,
- Ferrocene (Fe) contained fuel, and
- Other metallic additives contained fuels,
may cause damage to the engine by
plugging, misfiring, poor accelera-
tion, engine stalling, catalyst melting,
abnormal corrosion, life cycle reduc-
tion.
- The Malfunction Indicator Lamp (MIL) may illuminate.
Damage to the fuel system or per-
formance problem caused by the
use of these fuels may not be cov-
ered by your New Vehicle Limited
Warranty.
Gasoline containing MMT
Some gasoline contains harmful
manganese-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
performance and affect your emis-
sion control system.
The malfunction indicator lamp on
the cluster may come on.
Fuel Additives
HYUNDAI recommends that you use
good quality gasolines treated with
detergent additives such as TOP TIER
Detergent Gasoline, which help pre-
vent deposit formation in the engine.
These gasolines will help the engine
run cleaner and enhance performance
of the Emission Control System. For
more information on TOP TIER
Detergent Gasoline, please go to the
website (www
.toptiergas.com).
NOTICE
NOTICE

2-19
Safety system of your vehicle
2
Removal/Reinstallation
To remove the head restraint:
1. Raise the head restraint as far asit can go.
2. Press the head restraint release button (1) while pulling the head
restraint up (2).
To reinstall the head restraint:
1. Put the head restraint poles into the holes (3) while pressing the
release button (1).
2. Adjust the head restraint to the appropriate height.
Seat Warmers and
Air Ventilation Seats
Seat warmers (if equipped)
Seat warmers are provided to warm
the seats during cold weather.
To prevent damage to the seat
warmers and seats:
Never use a solvent such aspaint thinner, benzene, alcohol
or gasoline to clean the seats.
Do not place heavy or sharp objects on seats equipped with
seat warmers.
Do not change the seat cover. It may damage the seat warmer.
NOTICE
OLF034073N
The seat warmers can cause a
serious burn, even at low tem-
peratures and especially if used
for long periods of time.
Passengers must be able to feel
if the seat is becoming too warm
so they can turn it off, if needed.
People who cannot detect tem-
perature change or pain to the
skin should use extreme cau-
tion, especially the following
types of passengers:
Infants, children, elderly or
disabled persons, or hospital
outpatients.
People with sensitive skin or
who burn easily.
Fatigued individuals.
Intoxicated individuals.
(Continued)
WARNING
(Continued)
People taking medication that
can cause drowsiness or
sleepiness.
NEVER place anything on the
seat that insulates against heat
when the seat warmer is in oper-
ation, such as a blanket or seat
cushion. This may cause the
seat warmer to overheat, caus-
ing a burn or damage to the seat.
WARNING

3-62
Convenient features of your vehicle
Information
Make sure to refuel your vehicle
according to the "Fuel Requirements"
suggested in the Introduction chapter.
Do not spill fuel on the exteriorsurfaces of the vehicle. Any type
of fuel spilled on painted sur-
faces may damage the paint.
If the fuel filler cap requires replacement, use only a genuine
HYUNDAI cap or the equivalent
specified for your vehicle. An
incorrect fuel filler cap can
result in a serious malfunction
of the fuel system or emission
control system.
Emergency fuel filler door release
If the fuel filler door does not open
using the remote fuel filler door
release button, you can open it man-
ually. Pull the release located on the
left side of the trunk compartment.
NOTICE
i
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(Continued)
If a fire breaks out during refu-
eling, leave the vicinity of the
vehicle, and immediately con-
tact the manager of the gas
station and then contact the
local fire department. Follow
any safety instructions they
provide.
If pressurized fuel sprays out,
it can cover your clothes or
skin and thus subject you to
the risk of fire and burns.
Always remove the fuel cap
carefully and slowly. If the cap
is venting fuel or if you hear a
hissing sound, wait until the
condition stops before com-
pletely removing the cap.
Always check that the fuel cap
is installed securely to pre-
vent fuel spillage in the event
of an accident.

3-119
Convenient features of your vehicle
3
Types of warning sound and indicator
The indicator may differ from theillustration as objects or sen-
sors status. If the indicator
blinks, have your vehicle
checked by an authorized
HYUNDAI dealer.
If the audible warning does not sound or if the buzzer sounds
intermittently when shifting into
R (Reverse) position, this may
indicate a malfunction with the
Parking Assist System. If this
occurs, have your vehicle
checked by an authorized
HYUNDAI dealer as soon as pos-
sible.
To turn off the Rear ParkingAssist System
Push the button to turn off the Rear
Parking Assist System. The indicator
light on the button will turn on.
NOTICE
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Types of warning soundIndicator
When an object is 47 in. to 24
in. (120 cm to 60 cm) from the
rear bumper : Buzzer beeps
intermittently.
When an object is 24 in. to 12
in. (60 cm to 30 cm) from the
rear bumper : Buzzer beeps
more frequently.
When an object is within 12
in. (30 cm) of the rear bumper
: Buzzer beeps continuously.

7-69
7
Maintenance
Headlamp, Position Lamp,
Turn Signal Lamp and
Side Marker Light Bulb
Replacement
(1) Headlamp (Low)
(2) Headlamp (High)
(3) Turn signal lamp(4) Front side marker
(5) Daytime running lamp/
Parking lamp
Headlamp (Halogen bulb)
OLMB073042L
Handle halogen bulbs with
care. Halogen bulbs contain
pressurized gas that will pro-
duce flying pieces of glass
that could cause injuries if
broken.
Wear eye protection when
changing a bulb. Allow the
bulb to cool down before han-
dling it.
WARNING OLF077050
OLF077051
■Type B
■Type A