2018 Hyundai Sonata Plug-in Hybrid Owner's Manual

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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.
OLF047584
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

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Convenient features of your vehicle
3
Sunroof Open (if equipped)
This warning is displayed when the
sunroof is opened, after turning OFF
the vehicle.
Low Tire Pressure
This warning message is displayed if
the tire pressure is low. The corre-
sponding tire on the vehicle will be
illuminated.
For more information, refer to
"Tire Pressure Monitoring System
(TPMS)" in chapter 6.
Turn on FUSE SWITCH
This warning message is displayed
if the fuse switch in the instrument
panel fuse, under the steering wheel
is OFF.
If this message is displayed, turn the
fuse switch on.
For more information, refer to
"Fuses" in chapter 7.
Align steering wheel (if equipped)
This warning message is displayed
when the steering wheel is turned by
90 degrees or wider, either to the left
or to the right, while running the
engine.
In order to align the steering wheel,
turn the wheel in the direction shown
while the engine is running to
straighten the steering wheel.
Steering wheel aligning is com-pleted (if equipped)
If the steering wheel aligning is com-
pleted after "Align steering wheel"
warning message is displayed, this
message is displayed for 2 seconds.
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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
Check Auton. EmergencyBraking system(if equipped)
This warning message is displayed if
there is a malfunction with the
Autonomous Emergency Braking
(AEB) system. Have the vehicle
inspected by an authorized
HYUNDAI dealer.
For more details, refer to
"Autonomous Emergency Braking
(AEB) system" in chapter 5.
Check Driver Attention Alert System (if equipped)
This warning message is displayed if
there is a problem with the Driver
Attention Alert System. Have the
vehicle inspected by an authorized
HYUNDAI dealer.
For more information, refer to
"Driver Attention Alert (DAA)" in
chapter 5.
Check BSD System (if equipped)
This warning message is displayed if
there is a problem with the Blind Spot
Detection (BSD) system. Have the
vehicle inspected by an authorized
HYUNDAI dealer.
For more information, refer to
"Blind Spot Detection (BSD)
System" in chapter 5.
Check Lane Keep Assist System (if equipped)
This warning message is displayed if
there is a problem with the Lane
Keeping Assist System (LKAS).
Have the vehicle inspected by an
authorized HYUNDAI dealer.
For more information, refer to
"Lane Keeping Assist System
(LKAS)" in chapter 5.
Check Active Air Flap System
This warning message is displayed
in the following situations:
- There is a malfunction with the
actuator flap
- There is a malfunction with the actuator air flap controller
- The air flap does not open
When all of the above conditions are
fixed, the warning will disappear.
Check Hybrid system
This warning message is displayed
when there is a problem with the
hybrid control system.
Refrain from driving when the warn-
ing message is displayed.
In this case, have your vehicle
inspected by an authorized
HYUNDAI dealer.

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Convenient features of your vehicle
Check Hybrid system.Turn off engine.
This warning message is displayed
when there is a problem with the
hybrid system. The " " indicator
will blink and a warning chime will
sound until the problem is solved.
In this case, have your vehicle
inspected by an authorized
HYUNDAI dealer.
Check Hybrid system. Do notstart engine.
This warning message is displayed
when the hybrid battery power
(SOC) level is low. A warning chime
will sound until the problem is solved.
In this case, have your vehicle
inspected by an authorized
HYUNDAI dealer.
Stop vehicle and check powersupply
This warning message is displayed
when a failure occurs in the power
supply system.
In this case, park the vehicle in a
safe location and tow your vehicle to
the nearest authorized HYUNDAI
dealer and have the vehicle inspect-
ed.
Stop vehicle to charge battery
This warning message is displayed
when the hybrid battery power
(SOC) level is low.
In this case, park the vehicle in a
safe location and wait until the hybrid
battery is charged.
You can increase the hybrid battery
charging rate by holding the acceler-
ator pedal to the floor with transmis-
sion in P. The engine will rev high but
it will be limited for charging purpose
when you hold the pedal to the floor.
Refuel to prevent Hybrid batterydamage
This warning message is displayed
when the fuel tank is nearly empty.
You should refill the fuel tank to pre-
vent hybrid battery damage.
Refill inverter coolant
This warning message is displayed
when the inverter coolant is nearly
empty.
You should refill the inverter coolant.
Stop vehicle and check brakes
This warning message is displayed
when a failure occurs in the brake
system.
In this case, park the vehicle in a safe
location and tow your vehicle to the
nearest authorized HYUNDAI dealer
and have the vehicle inspected.

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Convenient features of your vehicle
3
Check brakes
This warning message is displayed
when the brake performance is low
or the regenerative brake does not
work properly due to a failure in the
brake system.
In this case, it may take longer for the
brake pedal to operate and the brak-
ing distance may become longer.
Check Virtual Engine SoundSystem
This message is displayed when
there is a problem with the Virtual
Engine Sound System (VESS).
In this case, have your vehicle
inspected by an authorized
HYUNDAI dealer.
Coasting guide (if equipped)
A chime will sound and the coasting
guide indicator will blink four times to
inform the driver when to take the foot
off from the accelerator by anticipating
a decelerating event* based on the
analysis of driving routes and road
conditions of the navigation. It encour-
ages the driver to remove foot from the
pedal and allow coasting down the
road with EV motor only. This helps
prevent unnecessary fuel consump-
tion and increases fuel efficiency. ❈
Example of a deceleration event is
going down an extended hill, slow-
ing down approaching a toll booth,
and approaching reduced speed
zones.
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Convenient features of your vehicle
Information
Coasting guide is only a supplemental
system to assist with fuel-efficient driv-
ing. Thus, the operating conditions
may be different in accordance with
traffic/road conditions (i.e. driving in a
traffic jam, driving on a slope, driving
on a curve). Thus, take the actual driv-
ing conditions into consideration, such
as distances from the vehicles ahead/
behind, while referring to the coasting
guide system as guidance.
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Press the Engine Start/Stop button and put the shift lever in P(Park). In the
User Settings Mode, select Driving Assist, Coasting Guide, and then On to
turn on the system. Cancel the selection of coasting guide to turn off the sys-
tem. For the explanation of the system, press and hold the [OK] button.

To activate the system, take the following procedures. Enter your destination
information on the navigation and select the driving route. Select the ECO
mode in the Integrated Driving Control System. Then, satisfy the following.
- The driving speed should be between 37 mph (60 km/h) and 99 mph (160 km/h).
❈The operating speed may vary due to difference between instrument clus-
ter and navigation effected by tire inflation level.
OLFH047182N/OLFH047556N/OLFP047578N
➜➜

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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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