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

2-53
Safety system of your vehicle
2
How Does the Air Bag System
Operate?
The SRS consists of the following
components:
1. Driver's front air bag module
2. Passenger's front air bag module
3. Side air bag modules
4. Curtain air bag modules
5. Retractor pre-tensioner assem-blies
6. Air bag warning light
7. SRS control module (SRSCM)/ Rollover sensor
8. Front impact sensors 9. Side impact sensors
10. Side pressure sensors
11. Driver's knee air bag module
12. Front passenger's seat belt
buckle sensors
13. Anchor pre-tensioner
14. Occupant classification system
The SRSCM continually monitors all
SRS components while the Engine
Start/Stop button is in the ON posi-
tion to determine if a crash impact is
severe enough to require air bag
deployment or pre-tensioner seat
belt deployment.
SRS warning light
The SRS (Supplement Restraint
System) air bag warning light on the
instrument panel displays the air bag
symbol depicted in the illustration.
The system checks the air bag elec-
trical system for malfunctions. The
light indicates that there is a potential
malfunction with your air bag system,
which could include your side and
curtain air bags used for rollover pro-
tection.
If your SRS malfunctions, the
air bag may not inflate properly
during an accident increasing
the risk of serious injury or
death.
If any of the following condi-
tions occur, your SRS is mal-
functioning: (Continued)
WARNING
ODH033104L/Q

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Convenient features of your vehicle
3
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Smart Key
Your HYUNDAI uses a Smart Key,
which you can use to lock or unlock
a door (and trunk) and even start the
engine.
1. Door Lock
2. Door Unlock
3. Trunk Unlock
4. Panic
Locking
To lock :
1. Close all doors, engine hood and
trunk.
2. Either press the door handle but- ton or press the Door Lock button
(1) on the smart key.
3. The hazard warning lights will blink and the chime will sound once.
4. Make sure the doors are locked by checking the position of the door
lock button inside the vehicle.
Information
The door handle button will only
operate when the smart key is within
28~40 inches (0.7~1 m) from the out-
side door handle.
Even though you press the outside
door handle button, the doors will not
lock and the chime will sound for
three seconds if any of the following
occur:
• The Smart Key is in the vehicle.
The Engine Start/Stop button is inACC or ON position.
Any door except the trunk is open.
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OLF047002OLF044003/Q
Do not leave the Smart Key in
your vehicle with unsupervised
children. Unattended children
could press the Engine Start/
Stop button and may operate
power windows or other con-
trols, or even make the vehicle
move, which could result in
serious injury or death.
WARNING

3-16
Convenient features of your vehicle
S
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Electric Power Steering (EPS)
The system assists you with steering
the vehicle. If the engine is turned off
or if the power steering system
becomes inoperative, you may still
steer the vehicle, but it will require
increased steering effort.
Should you notice any change in the
effort required to steer during normal
vehicle operation, have the system
checked by an authorized HYUNDAI
dealer.
Information
The following symptoms may occur
during normal vehicle operation:
• The steering effort may be high
immediately after placing the engine
Start/Stop button is in the ON posi-
tion.
This happens as the system per-
forms the EPS system diagnostics.
When the diagnostics are completed,
the steering wheel will return to its
normal condition.
• A click noise may be heard from the EPS relay after the engine Start/Stop
button is in the ON/OFF position.
• Motor noise may be heard when the vehicle is at a stop or at a low driving
speed.
• If the outside ambient temperature is low, when you operate the steer-
ing wheel a noise from the electric
power steering may occur. As the
temperature increases, the noise will
disappear.
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If the Electric Power Steering
System does not operate nor-
mally, the warning light ( ) will
illuminate on the instrument
cluster. You may steer the vehi-
cle, but it will require increased
steering efforts. Take your vehi-
cle to an authorized HYUNDAI
dealer and have the system
checked as soon as possible.
CAUTION

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Convenient features of your vehicle
3
Hood open warning (if equipped)
The warning message will appear on
the LCD display when hood is open.
The warning chime will operate when
the vehicle is being driven at or
above 3km/h with the hood open.
Closing the hood
1. Before closing the hood, check the
following:
ment must be correctly installed.
bustible material must be removed
from the engine compartment.
2. Lower the hood halfway (lifted approximately 30cm from the
closed position) and push down to
securely lock in place. Then dou-
ble check to be sure the hood is
secure.
Trunk
Opening the trunk
1. Make sure the shift lever is in P(Park) and set the parking brake.
2.Then do one of the following : - Press the button (1) on the trunkhandle after locking or unlocking
the door by smart key.
- Press the trunk unlock button of smart key for more than 1 second.
- Press the button (1) on the trunk itself with the Smart Key in your
possession.
Before closing the hood,
ensure all obstructions are
removed from around hood
opening.
Always double check to be
sure that the hood is firmly
latched before driving away.
Check there is no hood open
warning light or message dis-
played on the instrument clus-
ter. Driving with the hood
opened may cause a total loss
of visibility, which might
result in an accident.
Do not move the vehicle with
the hood in the raised posi-
tion, as vision is obstructed,
which might result in an acci-
dent, and the hood could fall
or be damaged.
WARNING
OLF047043
■ Outside

3-55
Convenient features of your vehicle
3
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.
NOTICE
i(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 prevent
fuel spillage in the event of an
accident.
(Continued)
Static electricity dischargefrom 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)

3-58
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)
(Continued)
Do not use cellular phones
while refueling. Electric cur-
rent and/or electronic interfer-
ence from cellular phones can
potentially ignite fuel vapors
and cause a fire.
Do not get back into a vehicle
once you have begun refuel-
ing. You can generate a build-
up of static electricity by touch-
ing, rubbing or sliding against
any item or fabric capable of
producing static electricity.
Static electricity discharge can
ignite fuel vapors causing a
fire. If you must re-enter the
vehicle, you should once again
eliminate potentially danger-
ous static electricity discharge
by touching a metal part of the
vehicle, away from the fuel filler
neck, nozzle or other gasoline
source, with your bare hand.
When using an approved
portable fuel container, be
sure to place the container on
the ground prior to refueling.(Continued)

3-69
Convenient features of your vehicle
3
Parking Brake & BrakeFluid Warning Light
This warning light illuminates:
When the Engine Start/Stop button
is in the ON position
- It illuminates for approximately 3seconds 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 illuminateswith 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). Then check all
brake components for fluid leaks.
When any leak in the brake system
is still detected, when the warning
light remains ON, or when the
brakes do not properly operate, do
not drive the vehicle.
Have the vehicle towed to an
authorized HYUNDAI dealer and
inspected.
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 should be
required. Also, the vehicle will not stop in a
short distance only with one of the
brake systems.
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

3-73
Convenient features of your vehicle
3
Engine Oil PressureWarning Light
This warning light illuminates:
When the Engine Start/Stop button
is in the ON position.
- It remains on until the engine isstarted.
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, we recommend that
you 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 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

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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