2016 Hyundai Sonata Plug-in Hybrid check engine

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Information
Make sure to refuel your vehicle
according to the "Fuel Requirements"
suggested in the Introduction chapter.
Do not spill fuel on the exterior
surfaces 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.
NOTICE
i
Convenient features of your vehicle
(Continued)
Do not over-fill or top-off your
vehicle tank, which can cause
gasoline spillage.
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.
(Continued)
Static electricity discharge
from the container can ignite
fuel vapors causing a fire.
Once refueling has begun,
contact between your bare
hand and the vehicle should
be maintained until the filling
is complete.
Use only approved portable
plastic fuel containers designed
to carry and store gasoline.
When refueling, always move
the shift lever to the P (Park)
position, set the parking
brake, and place engine
Start/Stop button to the OFF
position. Sparks produced by
electrical components related
to the engine can ignite fuel
vapors causing a fire.
Do not use matches or a
lighter and do not smoke or
leave a lit cigarette in your
vehicle while at a gas station,
especially during refueling.
(Continued)

Convenient features of your vehicle
3
Hybrid Battery SOC
(State of Charge) Gauge
This gauge indicates the remaining
hybrid battery power. If the SOC is
near the "L (Low)" level, the vehicle
automatically operates the engine to
charge the battery.However, if the Service Indicator ( )
and Malfunction Indicator Lamp
(MIL) ( ) turn on when the SOC
gauge is near the "L (Low)" level,
have the vehicle checked by an
authorized HYUNDAI dealer.
Never try to start the vehicle if the
fuel tank is empty. In this condi-
tion, the engine cannot charge the
high voltage battery of the hybrid
system. If you try to start the vehi-
cle when the fuel is empty, the
high voltage battery will become
discharged and be damaged.
Plug-in hybrid mode indicator

: The high-voltage
(hybrid) battery is
used to drive the
vehicle.

:The high-voltage
(hybrid) battery and
gasoline engine is
used to drive the
vehicle.

: Gasoline engine is
used to drive the
vehicle and charge
the high-voltage
(hybrid) battery
A corresponding message is dis-
played to indicate the selected mode.
NOTICE
OLFH044205K
OLFP045107
■Plug-in hybrid
■Hybrid
OLFP0Q5002K
OLFP0Q5003K
OLFP0Q5004K
OLFP045564N/OLFP045565N/OLFP045566N

3-68
Convenient features of your vehicle
Parking Brake & Brake
Fluid Warning Light
This warning light illuminates:
When the Engine Start/Stop button
is in the ON position
- It illuminates for approximately 3
seconds and then goes off.
- It remains on if the parking brake
is applied.
When the parking brake is applied.
When the brake fluid level in the
reservoir is low.
- If the warning light illuminates
with the parking brake released, it
indicates the brake fluid level in
reservoir is low.
When the regenerative brake does
not operate.
When only one of the dual system
is working, the stopping distance
will be increased
If the brake fluid level in the reser-
voir is low:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. Stop the vehicle, immediately
check the brake fluid level and add
fluid, if necessary (For more infor-
mation, refer to "Brake Fluid" in
the chapter 7). After adding brake
fluid, check all brake components
for fluid leaks. If a brake fluid leak is
found, or if the warning light
remains on, or if the brakes do not
operate properly, do not drive the
vehicle. Have the vehicle inspected
by an authorized HYUNDAI dealer.
Dual-diagonal braking system
Your vehicle is equipped with dual-
diagonal braking systems. This means
you still have braking on two wheels
even if one of the dual systems fails.
With only one of the dual systems
working, longer pedal travel and
greater pedal pressure is required.If the brakes fail, while driving, shift
to a lower gear for additional engine
braking and stop the vehicle as soon
as it is safe to do so.
(red color)
Driving the vehicle with a warn-
ing light ON is dangerous. If the
Parking Brake & Brake Fluid
Warning Light illuminates with
the parking brake released, it
indicates that the brake fluid
level is low.
In this case, have the vehicle
inspected by an authorized
HYUNDAI dealer.
WARNING

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Convenient features of your vehicle
Engine Oil Pressure
Warning Light
This warning light illuminates:
When the Engine Start/Stop button
is in the ON position.
- It remains on until the engine is
started.
When the engine oil pressure is low.
When the engine oil pressure is low,
follow the below procedures:
1.Carefully drive to the nearest safe
location and stop your vehicle.
2.Turn OFF the engine and check
the engine oil level (For more
information, refer to the “Engine
Oil” in the chapter 7). If the level
is low, add engine oil.
When the warning light remains
ON after adding engine oil and
restarting the engine, or when
engine oil refilling is unavailable,
turn OFF the engine. These indi-
cate a mechanical problem, which
needs to be repaired before driving.In this case, have your vehicle
inspected by an authorized
HYUNDAI dealer.
When the Engine Oil Pressure
Warning Light illuminates, turn
OFF the engine, and check the
engine oil level, in an attempt to
prevent severe engine damage.
These should be done as soon as
it is safe to do so. When the oil
level is low, add the engine oil to
the proper level and start the
engine again. When the light stays
ON, while running the engine,
immediately turn OFF the engine.
In this case, have your vehicle
inspected by an authorized
HYUNDAI dealer.
Low Fuel Level
Warning Light
This warning light illuminates:
When the fuel tank is nearly empty.
Add fuel as soon as possible.
Driving with the Low Fuel Level
warning light on or with the fuel
level below "E (Empty)" may
cause the engine to misfire and
damage the catalytic converter.
Driving the vehicle in EV mode
after fuel runs out may damage
the hybrid battery.
NOTICE
NOTICE

3-82
Convenient features of your vehicle
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 displayed.
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).
OLFH044133LOLFH044121LOLFH045127N

3-87
Convenient features of your vehicle
3
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 not
start 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 power
supply
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.
OLFH044240LOLFH044228LOLFH044230L

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Convenient features of your vehicle
3
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.
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 Sound
System
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.
OLFH044234L
OLFH044543L
OLFH044250L

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