check engine Hyundai Sonata Plug-in Hybrid 2018 Owner's Guide

5-3
Driving your vehicle
5
Carbon monoxide (CO) gas is toxic. Breathing CO can cause unconsciousness and death.
Engine exhaust contains carbon monoxide which cannot be seen or smelled.
Do not inhale engine exhaust.
If at any time you smell engine exhaust inside the vehicle, open the windows immediately. Exposure to CO can cause
unconsciousness and death by asphyxiation.
Be sure the exhaust system does not leak.
The exhaust system should be checked whenever the vehicle is raised to change the oil or for any other purpose. If
you hear a change in the sound of the exhaust or if you drive over something that strikes the underneath side of the
vehicle, have the exhaust system checked as soon as possible by an authorized HYUNDAI dealer.
Do not run the engine in an enclosed area.
Letting the engine idle in your garage, even with the garage door open, is a hazardous practice. Run the engine only
long enough to start the engine and to move the vehicle out of the garage.
Avoid idling the engine for prolonged periods with people inside the vehicle.
If it is necessary to idle the engine for a prolonged period with people inside the vehicle , be sure to do so only in an
open area with the air intake set at "Fresh" and fan control set to high so fresh air is drawn into the interior.
Keep the air intakes clear.
To assure proper operation of the ventilation system, keep the ventilation air intakes located in front of the windshield
clear of snow, ice, leaves, or other obstructions.
If you must drive with the trunk open:
Close all windows.
Open instrument panel air vents.
Set the air intake control at "Fresh", the air flow control at "Floor" or "Face", and the fan control set to high.
WARNING

5-4
Driving your vehicle
Before entering the vehicle
• Be sure all windows, outside mir-ror(s), and outside lights are clean
and unobstructed.
Remove frost, snow, or ice.
Visually check the tires for uneven wear and damage.
Check under the vehicle for any sign of leaks.
Be sure there are no obstacles behind you if you intend to back up.
Before starting
Make sure the hood, the trunk, andthe doors are securely closed and
locked.
Adjust the position of the seat and steering wheel.
Adjust the inside and outside rearview mirrors.
Verify all the lights work.
Fasten your seatbelt. Check that all passengers have fastened their
seatbelts. Check the gauges and indicators in
the instrument panel and the mes-
sages on the instrument display
when the ignition switch is in the
ON position.
Check that any items you are car- rying are stored properly or fas-
tened down securely.
CALIFORNIA PROPOSITION 65
WARNING
Engine exhaust and a wide vari-
ety of automobile components
including components found in
the interior furnishings in a
vehicle, contain or emit harmful
chemicals known to the State of
California to cause cancer and
birth defects and reproductive
harm. In addition, certain fluids
contained in vehicles and cer-
tain products of components
contain or emit chemicals
known to the State of California
to cause cancer and birth
defects or other reproductive
harm.
WARNING
B B
E
EF
FO
O R
RE
E
D
D R
RI
IV
V I
IN
N G
G
To reduce the risk of SERIOUS
INJURY or DEATH, take the fol-
lowing precautions:
•ALWAYS wear your seat belt.
All passengers must be prop-
erly belted whenever the vehi-
cle is moving. For more infor-
mation, refer to "Seat Belts" in
chapter 2.
Always drive defensively.
Assume other drivers or pedes-
trians may be careless and
make mistakes.
Stay focused on the task of
driving. Driver distraction can
cause accidents.
Leave plenty of space between
you and the vehicle in front of
you.
WARNING

5-8
Driving your vehicleButton Position Action Notice
ON Press the Engine Start/Stop button while it
is in the ACC position without depressing
the brake pedal.
The warning lights can be checked before
the hybrid system is started. Do not leave the Engine Start/Stop button in
the ON position when the hybrid system is
not running to prevent the battery from dis-
charging.
START
To start the hybrid system, depress the
brake pedal and press the Engine
Start/Stop button with the shift lever in the P
(Park) position. If you press the Engine Start/Stop button
without depressing the brake pedal, the
hybrid system does not start and the Engine
Start/Stop button changes as follows:
OFF
→ →
ACC →
→
ON →
→
OFF or ACC

5-9
Driving your vehicle
5
Starting the hybrid system Information
• The hybrid system will start by
pressing the Engine Start/Stop but-
ton, only when the smart key is in
the vehicle.
• Even when the smart key is in the vehicle, and when it is far away
from the driver, the hybrid system
may not start.
• When the Engine Start/Stop button is in the ACC or ON position, if any
door is open, the system checks for
the smart key. If the smart key is not
in the vehicle, the " " indicator
will blink and the warning "Key not
in vehicle" will come on. If all doors
are closed, the chime will also sound
for about 5 seconds. Keep the smart
key in the vehicle when in the ACC
position or if the hybrid system is
ON. 1. Always carry the smart key with
you.
2. Make sure the parking brake is applied.
3. Make sure the shift lever is in P (Park).
4. Depress the brake pedal.
5 Press the Engine Start/Stop but- ton. If the hybrid system starts, the
" " indicator will come on.
i
Always wear appropriate shoes
when operating your vehicle.
Unsuitable shoes, such as high
heels, ski boots, sandals, flip-
flops, etc., may interfere with
your ability to use the brake
and accelerator pedals.
Do not start the vehicle with the
accelerator pedal depressed.
The vehicle can move and lead
to an accident.
WARNING

5-13
Driving your vehicle
5
The indicator in the instrument clus-
ter displays the shift lever position
when the Engine Start/Stop button is
in the ON position.
P (Park)
Always come to a complete stop
before shifting into P (Park).
To shift from P (Park), you must
depress firmly on the brake pedal
and make sure your foot is off the
accelerator pedal.
If you have done all of the above
and still cannot shift the lever out of
P (Park), see "Shift-Lock Release"
in this chapter.
The shift lever must be in P (Park)
before turning the hybrid system off.
To reduce the risk of serious
injury or death:
ALWAYS check the surround-
ing areas near your vehicle for
people, especially children,
before shifting a vehicle into
D (Drive) or R (Reverse).
Before leaving the driver's
seat, always make sure the
shift lever is in the P (Park)
position, then set the parking
brake, and place the Engine
Start/Stop button in the OFF
position. Unexpected and
sudden vehicle movement
can occur if these precautions
are not followed.
Do not use the engine brake
(shifting from a high gear to
lower gear) rapidly on slip-
pery roads. The vehicle may
slip causing an accident.
When using Manual Shift
Mode: Do not shift from a high
gear to lower gear rapidly on
slippery roads. The vehicle
may slip causing an accident.
WARNING
Shifting into P (Park) while the
vehicle is in motion may
cause you to lose control of
the vehicle.
After the vehicle has stopped,
always make sure the shift
lever is in P (Park), apply the
parking brake, and turn the
hybrid system off.
Do not use the P (Park) posi-
tion in place of the parking
brake.
WARNING

5-21
Driving your vehicle
5
Do not apply the acceleratorpedal while the parking brake is
engaged. If you depress the
accelerator pedal with the park-
ing brake engaged, warning will
sound. Damage to the parking
brake may occur.
Driving with the parking brake on can overheat the braking sys-
tem and cause premature wear
or damage to brake parts. Make
sure the parking brake is
released and the Brake Warning
Light is off before driving. Check the Parking
Brake Warning Light
by placing the Engine
Start/Stop button to
the ON position (do
not start the hybrid
system).
This light will be illuminated when the
parking brake is applied with the
Engine Start/Stop button in the
START or ON position.
Before driving, be sure the parking
brake is released and the Brake
Warning Light is OFF.
If the Parking Brake Warning Light
remains on after the parking brake is
released while hybrid system is ON,
there may be a malfunction in the
brake system. Immediate attention is
necessary.
If at all possible, cease driving the
vehicle immediately. If that is not pos-
sible, use extreme caution while
operating the vehicle and only con-
tinue to drive the vehicle until you
can reach a safe location.
NOTICE
Whenever leaving the vehicle
or parking, always come to a
complete stop and continue
to depress the brake pedal.
Move the shift lever into the P
(Park) position, then apply the
parking brake, and place the
Engine Start/Stop button in
the OFF position.
Vehicles with the parking
brake not fully engaged are at
risk for moving inadvertently
and causing injury to yourself
or others.
NEVER allow anyone who is
unfamiliar with the vehicle to
touch the parking brake. If the
parking brake is released
unintentionally, serious injury
may occur.
Only release the parking
brake when you are seated
inside the vehicle with your
foot firmly on the brake pedal.
WARNING
(red color)

5-23
Driving your vehicle
5
To release EPB automatically:
Shift lever in P (Park)With the engine running depress
the brake pedal and shift out of P
(Park) to R (Reverse) or D (Drive).
Shift lever in N (Neutral) With the engine running depress
the brake pedal and shift out of N
(Neutral) to R (Reverse) or D
(Drive).
Make sure the Parking Brake Warning
light ( , red color) goes off.
Information
• For your safety, you can engage the EPB even though the Engine
Stop/Start button is in the OFF posi-
tion, but you cannot release it.
• For your safety, depress the brake pedal and release the parking brake
manually with the EPB switch when
you drive downhill or when backing
up the vehicle. If the parking brake warning light
( , red color) is still on even
though the EPB has been
released, have the system checked
by an authorized HYUNDAI dealer.
Do not drive your vehicle with the EPB applied. It may cause
excessive brake pad and brake
rotor wear.
When the EPB does not release:
Contact an authorized HYUNDAI
dealer by loading the vehicle on a
flatbed tow truck and have the sys-
tem checked.
EPB may be automatically applied
when:
The EPB is overheated
It is requested by other systems
The hybrid system is turned offwhen the Auto Hold switch is on.
Information
If the driver turns the hybrid system
off while Auto Hold is operating, EPB
will be automatically applied.
However, to prevent the EPB from
being automatically applied, turn off
the AUTO HOLD before turning off
the vehicle.
iNOTICE
i
OLF057587L

5-26
Driving your vehicle
EPB malfunction indicator (if equipped)
This warning light illuminates if the
Engine Start/Stop button is changed
to the ON position and goes off in
approximately 3 seconds if the sys-
tem is operating normally.
If the EPB malfunction indicator
remains on, comes on while driving,
or does not come on when the
Engine Start/Stop button is changed
to the ON position, this indicates that
the EPB may have malfunctioned. If this occurs, have the system
checked by an authorized HYUNDAI
dealer.
The EPB malfunction indicator may
illuminate when the ESC indicator
comes on to indicate that the ESC is
not working properly, but it does not
indicate a malfunction of the EPB.
If the EPB warning light is still
on, we recommend that the sys-
tem be checked by an author-
ized HYUNDAI dealer.
If the parking brake warning light ( , red color) does not
illuminate or blinks even though
the EPB switch was pulled up,
the EPB may not be applied.
If the parking brake warning light ( , red color) blinks when
the EPB warning light is on,
press the switch, and then pull it
up. Repeat this one more time. If
the EPB warning does not go
off, have the system checked by
an authorized HYUNDAI dealer.
NOTICE
OLF057022

5-34
Driving your vehicle
Electronic Stability Control
(ESC)
The Electronic Stability Control
(ESC) system helps to stabilize the
vehicle during cornering maneuvers.
ESC checks where you are steering
and where the vehicle is actually
going. ESC applies braking pressure
to any one of the vehicle’s brakes
and intervenes in the engine man-
agement system to assist the driver
with keeping the vehicle on the
intended path. It is not a substitute
for safe driving practices. Always
adjust your speed and driving to the
road conditions.
ESC operation
ESC ON condition
When the Engine Start/Stop button
is in the ON position, the ESC and
the ESC OFF indicator lights illumi-
nate for approximately three seconds
and goes off, then the ESC is turned
on.
OLF057448
Never drive too fast for the road
conditions or too quickly when
cornering. The ESC system will
not prevent accidents.
Excessive speed in turns, abrupt
maneuvers, and hydroplaning
on wet surfaces can result in
severe accidents.
WARNING

5-36
Driving your vehicle

Press the ESC OFF button continu-
ously for more than 3 seconds. The
ESC OFF indicator light and mes-
sage illuminates and a warning
chime sounds. In this state, both the
traction control function of ESC
(engine management) and the brake
control function of ESC (braking
management) are disabled.
If the Engine Start/Stop button is
placed to the OFF position when
ESC is off, ESC remains off. Upon
restarting the engine, the ESC will
automatically turn on again.
Indicator lights
When the Engine Start/Stop button
is pressed to the ON position, the
ESC indicator light illuminates, then
goes off if the ESC system is operat-
ing normally.
The ESC indicator light blinks when-
ever the ESC is operating.
If ESC indicator light stays on, your
vehicle may have a malfunction with
the ESC system. When this warning
light illuminates, have the vehicle
checked by an authorized HYUNDAI
dealer as soon as possible. The ESC OFF indicator light comes
on when the ESC is turned off with
the button.
Driving with wheels and tires with
different sizes may cause the ESC
system to malfunction. Before
replacing tires, make sure all four
tires and wheels are the same
size. Never drive the vehicle with
different sized tires and wheels
installed.
NOTICE
OLF057100N
■
ESC indicator light (blinks)
■ ESC OFF indicator light (comes on)
When the ESC is blinking, this
indicates the ESC is active:
Drive slowly and NEVER
attempt to accelerate. NEVER
turn the ESC off while the ESC
indicator light is blinking or you
may lose control of the vehicle
resulting in an accident.
WARNING