2018 Hyundai Sonata Plug-in Hybrid check engine light

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Convenient features of your vehicle
Press START button again
This message is displayed if you
were unable to start the vehicle when
the Engine Start/Stop button was
pressed.
If this occurs, attempt to start the
engine by pressing the Engine Start/
Stop button again.
If the warning message appears
each time you press the Engine
Start/Stop button, have your vehicle
inspected by an authorized Hyundai
dealer.
Press START button with key
This warning message is displayed
when you press the Engine
Start/Stop button while the warning
message, "Key not detected," is dis-
played.
At this time, the immobilizer indicator
light blinks.
Check BRAKE SWITCH fuse
This warning message is displayed if
the brake switch fuse is disconnected.
If this message is displayed, replace
the fuse with a new one before start-
ing the vehicle. If not possible, you
can start the engine by pressing the
Engine Start/Stop button for 10 sec-
onds in the ACC position.
Shift to P to start engine
This warning message is displayed
when you try to start the vehicle with
the shift lever not in P (Park).
Door, Hood, Trunk Open
This warning message is displayed
indicating which door, or the hood, or
the trunk is open.
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Before driving the vehicle, you
should confirm that the door/
hood/trunk is fully closed.
Also, check there is no door/
hood/trunk open warning light
or message displayed on the
instrument cluster.
CAUTION

3-84
Convenient features of your vehicle
Low Washer Fluid
This warning message is displayed
in the service reminder mode, when
the washer fluid in the reservoir is
nearly empty.
If this warning message is displayed,
have the washer fluid reservoir
refilled.
Low Fuel
This warning message is displayed if
the fuel tank is almost out of fuel.
When this message is displayed, the
vehicle range is approximately 30
miles.
When this message is displayed, the
low fuel level warning light in the
instrument cluster will come on.
It is recommended to look for the
nearest fueling station and refuel as
soon as possible.
Engine overheated
This warning message is displayed
when the engine coolant tempera-
ture is above 248°F (120°C). This
means that the engine is overheated
and may be damaged.
If your vehicle is overheated, refer
to "Overheating" in chapter 6.
Check headlight (if equipped)
This warning message is displayed,
if the headlamps are not operating
properly. The headlamp bulb may
need to be replaced. If the vehicle is
equipped with LED headlamps, have
the vehicle inspected by an author-
ized HYUNDAI dealer.
Information
Make sure to replace the burned out
bulb with a new one of the same
wattage rating.
Check headlamp LED(if equipped)
This warning message is displayed if
there is a problem with the LED
headlamp. Have the vehicle inspect-
ed by an authorized HYUNDAI deal-
er.
Check headlamp cooling fan(if equipped)
This warning message is displayed if
there is a problem with headlamp
fan. Have the vehicle inspected by an
authorized HYUNDAI dealer.
Check smart high beam system(if equipped)
This warning message is displayed if
there is a problem with the Smart
High Beam System. Have the vehicle
inspected by an authorized
HYUNDAI dealer.
For more information, refer to
"Smart High Beam System" in
chapter 3.
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Convenient features of your vehicle
3
Unplugging vehicle to start(Plug-in hybrid)
The message is displayed when you
start the engine without unplugging
the charging cable. Unplug the
charging cable, and then start the
vehicle.
Remaining time to fully chargethe battery (Plug-in hybrid)
The message is displayed to notify
the remaining time to fully charge the
battery.
2WD Certification Mode (Plug-in hybrid)
The message is displayed when the
2WD vehicle enters the fuel econo-
my certification test mode.
Wait until fuel door opens (Plug-in hybrid)
The message is displayed when you
attempt to open the fuel filler door
with the fuel tank pressurized. Wait
until the fuel tank is depressurized.
Information
• It may take up to 20 seconds to open
fuel filler door.
• When the fuel filler door is frozen and does not open after 20 seconds
at freezing temperature, slightly tap
the fuel filler door and then attempt
to open it.
Fuel door open(Plug-in hybrid)
The message is displayed when the
fuel filler door opens after the fuel
tank is depressurized. If this mes-
sage is displayed, you can refuel the
fuel tank.
Check fuel door (Plug-in hybrid)
The message is displayed when the
vehicle is driven with the fuel filler
door opened. Close the fuel filler
door and then start driving.
Park with engine On to charge battery(Plug-in hybrid)
The message is displayed when the
charging connector is plugged with
the shift lever in R (Reverse), N
(Neutral) or D (Drive). Move the shift
lever to P (Park) and re-start the
charging process.
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Convenient features of your vehicle
3
AFLS (Adaptive Front LightingSystem) a.k.a. DBL (DynamicBending Light) (if equipped)
Adaptive front lighting system uses
the steering angle and vehicle speed
to help maximize your field of vision
by swiveling and leveling the head-
lamp.
Change the switch to the AUTO posi-
tion when the engine is running. The
adaptive front lighting system will
operate when the headlamps are
ON. To turn off the AFLS, change the
switch to other positions. After turn-
ing the AFLS off, headlamp swiveling
no longer occurs, but the leveling will
operate continuously. If the AFLS malfunction indicator
comes on, the AFLS is not working
properly. Drive to the nearest safe
location and restart the engine. If the
indicator continuously remains on,
have the system checked by an
authorized HYUNDAI dealer.
Daytime running light (DRL)
The Daytime Running Lights (DRL)
can help for others to see the front of
your vehicle during the day, especial-
ly after dawn and before sunset.
for U.S.A
The DRL will turn off when:

1. The light switch is not in the AUTO
position.
2. The parking brake is applied.
3. The engine is turned off.

1. The light switch is not in DRL posi- tion.
2. The parking brake is applied.
3. The engine is turned off.
for Canada
The DRL will turn off when:
1. The light switch is in the headlamp position, including the operation
that the headlamp is turned on
automatically in the AUTO light
position.
2. The parking brake is applied.
3. The engine is turned off.
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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

5-21
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)

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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
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