check engine Hyundai Sonata 2020 Owner's Guide

While Driving6-36
Battery Sensor Deactivation
ODN8A069204ODN8A069204
[A] : Battery sensor
The battery sensor is deactivated, when
the battery is disconnected from the
negative pole for maintenance purpose.
In this case, the ISG system is limitedly
operated due to the battery sensor
deactivation. Thus, the driver needs
to take the following procedures to
reactivate the battery sensor after
disconnecting the battery.
Prerequisites to reactivate the
battery sensor
Switch "ON" and "OFF" the ignition one
time. Park the vehicle for a minimum of 4
hours with the hood and all doors closed.
Pay extreme caution not to connect any
accessories (i.e. navigation and black
box) to the vehicle with the engine in the
OFF status. If not, the battery sensor may
not be reactivated.
Information
The ISG system may not operate in the
following situations. - There is a malfunction with the ISG
system.
- The battery is weak.
- The brake vacuum pressure is low.
If this occurs, have the ISG system
checked by an authorized HYUNDAI
dealer.
NOTICE
• Use only a genuine HYUNDAI
Absorbent Glass Mat (AGM) battery
for replacement. If not, the ISG
system may not operate normally.
• Do not recharge the Absorbent Glass
Mat (AGM) battery with a general
battery charger. It may damage or
explode the Absorbent Glass Mat
(AGM) battery.
• Do not remove the battery cap. The
battery electrolyte, which is harmful
to the human body, may leak out.

While Driving6-64
Warning Light and Message
Type AType AType BType B
OIK057121NOIK057121NOIK057122NOIK057122N
Check LKA (Lane Keep Assist) system
If there is a problem with the system a
message will appear f
or a few seconds.
If the problem continues LKA system
failure indicator will illuminate.
LKA system indicator
The LKA system indicator
(yellow) will illuminate if LKA
system is not working properly.
Have the vehicle inspected by an
authorized HYUNDAI dealer.
When there is a problem with the system
do one of the following:
• Turn the system on after turning the v
ehicle off and on again.
• Check if the ignition switch is in the ON position.
• Check if the system is affected by the weather. (ex: fog, heavy rain, etc.)
• Check if there is foreign matter on the camera lens.
If the problem is not solved, have the
vehicle inspected by an authorized
HYUNDAI dealer. LKA system will not be in the ENABLED
state and the steering wheel will not be
assisted when:
• The turn signal is turned on before
changing a lane. If y
ou change
lanes without the turn signal on, the
steering wheel might be controlled.
• The vehicle is not driven in the middle of the lane when the system is turned
on or right after changing a lane.
• ESC (Electronic Stability Control) or VSM (Vehicle Stability Management)
is activated.
• The vehicle is driven on a sharp curve.
• Vehicle speed is below 40 mph (64 km/h) and over 110 mph (177 km/h).
• The vehicle makes sharp lane changes.
• The vehicle brakes suddenly.
• Only one lane marker is detected.
• The lane (or road width) is very wide or narrow.
• There are more than two lane markers on the road. (e.g. construction area)
• The vehicle is driven on a steep incline.
• The steering wheel is turned suddenly.
• The system may not operate for 15 seconds after the engine is started or
the camera is initialized.

06
6-87
LeftLeft
ODN8A059141ODN8A059141
RightRight
ODN8A059142ODN8A059142
Blind-Spot View Monitor system displays
the left or right side of the rear blind spot
area of your vehicle in the instrument
cluster when the left or right turn signal
is on. This function helps you when
changing lanes.
• The system is activated when the following steps are performed.
1. The engine is running.
2. The turn signal is turned on. • The system is deactivated when one
of the following is performed.
- The Engine Start/Stop button is in the OFF position.
- The turn signal is turned off
- The hazard warning flasher is on
- A warning screen pops up and takes priority over Blind-Spot View
Monitor system.
WARNING
• This system is a supplemental system
only. It is the responsibility of the
driver to always check the area
around the vehicle before and while
making turns or changing lanes.
• ALWAYS look around your vehicle
to make sure there are no objects or
obstacles before moving the vehicle
in any direction to prevent a collision.
• Objects are closer than they appear.
Failure to visually confirm that view
the blind spot area is safe to change
the lane before doing so may result
in crash and serious injury or death.
• Always keep the camera lens clean.
The camera may not work normally
if the lens is covered with foreign
substance.
BLIND-SPOT VIEW MONITOR (BVM) (IF EQUIPPED)

06
6-93
• The vehicle is stopped for more than 5 minutes.
• The vehicle stops and goes repeatedly for a long period of time.
• The accelerator pedal is continuously depressed for a long period of time.
• The accelerator pedal is continuously depressed for more than one minute.
• The engine performance is abnormal.
• Engine rpm is in the red zone.
• The driver starts driving by pushing the toggle switch up (RES+)/down
(SET-) or depressing the accelerator
pedal, after the vehicle is stopped by
Smart Cruise Control system with no
other vehicle ahead.
• The driver starts driving by pushing the toggle switch up (RES+)/down
(SET-) or depressing the accelerator
pedal, after stopping the vehicle with
a vehicle stopped far away in front.
• Forward Collision-Avoidance Assist is activated.
• The engine speed is in dangerous range.
• When engine is stopped by ISG (Idle Stop & Go).
Each of these actions will cancel the
Smart Cruise Control operation. The Set
Speed and Vehicle-to-Vehicle Distance
on the LCD display will go off.
In a condition Smart Cruise Control is
cancelled automatically, Smart Cruise
Control will not resume even though the
RES+ or SET- toggle switch is pushed. Information
If Smart Cruise Control is cancelled by
other than the reasons mentioned, have
the vehicle inspected by an authorized
HYUNDAI dealer.
OIK057096LOIK057096L
Smart Cruise Control cancelled
If the system is cancelled, the warning
chime will sound and a message will
appear f

or a few seconds.
You must adjust the vehicle speed by
depressing the accelerator or brake
pedal according to the road condition
ahead and driving condition.
Always check the road conditions. Do not
rely on the warning chime.

While Driving6-100
Warning message
OTM058061LOTM058061L
Smart Cruise Control disabled.
Radar blocked
When the sensor lens cover is blocked
with dirt, sno
w, or debris, Smart Cruise
Control system operation may stop
temporarily. If this occurs, a warning
message will appear on the cluster LCD
display. Remove any dirt, snow, or debris
and clean the radar sensor lens cover
before operating Smart Cruise Control
system. Smart Cruise Control system
may not properly activate, if the radar is
totally covered, or if any substance is not
detected after turning on the engine
(e.g. in an open terrain).
Information
For the SCC operation is temporarily
stopped if the radar is blocked, but you
wish to use cruise control mode (speed
control function), you must convert to the
cruise control mode (refer to "To convert
to Cruise Control mode" in the following
page.
OIK057109LOIK057109L
Check Smart Cruise Control System
The message will appear when the
v
ehicle to vehicle distance control
system is not functioning normally.
Have the vehicle inspected by an
authorized HYUNDAI dealer.

06
6-135
Driving in Flooded Areas
Avoid driving through flooded areas
unless you are sure the water is no
higher than the bottom of the wheel hub.
Drive through any water slowly. Allow
adequate stopping distance because
brake performance may be reduced.
After driving through water, dry the
brakes by gently applying them several
times while the vehicle is moving slowly.
Highway Driving
Tires
Adjust the tire inflation, as specified.
Under-inflation may overheat or damage
the tires.
Do not install worn-out or damaged tires,
which may reduce traction or adversely
affect vehicle handling. This could lead
to sudden tire failure that may cause
loss of vehicle control resulting in an
accident.
Information
Never over-inflate your tires above the
maximum inflation pressure, as specified
on your tires.
Fuel, engine coolant and engine oil
Driving at higher speeds on the highway
consumes more fuel and is less efficient
than driving at a slower, more moderate
speed. Maintain a moderate speed in
order to conserve fuel when driving on
the highway.
Be sure to check both the engine coolant
level and the engine oil before driving.
Drive belt
A loose or damaged drive belt may
overheat the engine.

While Driving6-136
The severe weather conditions of winter
quickly wear out tires and cause other
problems. To minimize winter driving
problems, you should take the following
suggestions:
Snow or Icy Conditions
You need to keep sufficient distance
between your vehicle and the vehicle in
front of you.
Apply the brakes gently. Speeding, rapid
acceleration, sudden brake applications,
and sharp turns are potentially
very hazardous practices. During
deceleration, use engine braking to the
fullest extent. Sudden brake applications
on snowy or icy roads may cause the
vehicle to skid.
To drive your vehicle in deep snow, it
may be necessary to use snow tires or to
install tire chains on your tires.
Always carry emergency equipment.
Some of the items you may want to carry
include tire chains, tow straps or chains,
a flashlight, emergency flares, sand, a
shovel, jumper cables, a window scraper,
gloves, ground cloth, coveralls, a blanket,
etc.
Snow tires
WARNING
Snow tires should be equivalent in size
and type to the vehicle’s standard tires.
Otherwise, the safety and handling of
your vehicle may be adversely affected.
If you mount snow tires on your vehicle,
make sure to use radial tires of the same
size and load range as the original tires.
Mount snow tires on all four wheels
to balance your vehicle’s handling in
all weather conditions. The traction
provided by snow tires on dry roads
may not be as high as your vehicle's
original equipment tires. Check with
the tire dealer for maximum speed
recommendations.
Information
Do not install studded tires without
first checking local, state and municipal
regulations for possible restrictions against
their use.
Tire chains
ODN8069077LODN8069077L
Since the sidewalls of radial tires are
thinner than other types of tires, they
may be damaged by mounting some
types of tire chains on them. Therefore
the use of snow tires is preferred over the
use of tire chains.
If the road and weather conditions
require the use of tire chains, be sure to
use tire chains that have been properly
selected for the size of tire on your
HYUNDAI vehicle.
Be sure to follow the guidelines and
installation instructions provided from
the tire chain manufacturer.
Damage to your vehicle caused by
improper tire chain use is not covered by
your vehicle manufacturer’s warranty.
WINTER DRIVING

06
6-137
WARNING
The use of tire chains may adversely
affect vehicle handling:
• Drive less than 20 mph (30 km/h)
or the chain manufacturer's
recommended speed limit,
whichever is lower.
• Drive carefully and avoid bumps,
holes, sharp turns, and other road
hazards, which may cause the
vehicle to bounce.
• Avoid sharp turns or locked wheel
braking.
Information
• Install tire chains on both left and right
front tires. It should be noted that
installing tire chains on the tires will
provide a greater driving force, but will
not prevent side skids.
• Do not install studded tires without
first checking local, state and municipal
regulations for possible restrictions
against their use.
Chain installation
When installing tire chains, follow the
manuf
acturer’s instructions and mount
them as tightly possible. Drive slowly
(less than 20 mph (30 km/h)) with
chains installed. If you hear the chains
contacting the body or chassis, stop and
tighten them. If they still make contact,
slow down until the noise stops. Remove
the tire chains as soon as you begin
driving on cleared roads.
When mounting snow chains, park the
vehicle on level ground away from traffic.
Turn on the vehicle Hazard Warning
Flasher and place a triangular emergency
warning device behind the vehicle (if
available). Always place the vehicle in P
(Park), apply the parking brake and turn
off the engine before installing snow
chains.
NOTICE
When using tire chains:
• Wrong size chains or improperly
installed chains can damage your
vehicle's brake lines, suspension,
body and wheels.
• Use SAE "S" class or wire chains.
• If you hear noise caused by chains
contacting the body, retighten the
chain to prevent contact with the
vehicle body.
• To prevent body damage, retighten
the chains after driving 0.3~0.6 miles
(0.5~1.0 km).
• Do not use tire chains on vehicles
equipped with aluminum wheels. If
unavoidable, use a wire type chain.
• Use wire chains less than 0.59 inch
(15mm) wide to prevent damage to
the chain’s connection.
Winter Precautions
Use high quality ethylene glycol
coolant
Your vehicle is delivered with high
quality ethylene glycol coolant in the
cooling system. It is the only type of
coolant that should be used because it
helps prevent corrosion in the cooling
system, lubricates the water pump and
prevents freezing. Be sure to replace or
replenish your coolant in accordance
with the maintenance schedule in
chapter 8. Before winter, have your
coolant tested to assure that its freezing
point is sufficient for the temperatures
anticipated during the winter.

While Driving6-138
Change to "winter weight" oil if
necessary
In some climates it is recommended that
a lower viscosity "winter weight" oil be
used during cold weather. See chapter 8
for recommendations. If you aren't sure
what weight oil you should use, consult
an authorized HYUNDAI dealer.
Check battery and cables
Winter puts additional burdens on the
battery system. Visually inspect the
battery and cables as described in
chapter 8. The level of charge in your
battery can be checked by an authorized
HYUNDAI dealer or a service station.
Check spark plugs and ignition
system
Inspect your spark plugs as described in
chapter 8 and replace them if necessary.
Also check all ignition wiring and
components to be sure they are not
cracked, worn or damaged in any way.
Use approved window washer anti-
freeze in system
To keep the water in the window washer
system from freezing, add an approved
window washer anti-freeze solution in
accordance with instructions on the
container. Window washer anti-freeze is
available from an authorized HYUNDAI
dealer and most auto parts outlets. Do
not use engine coolant or other types
of antifreeze as these may damage the
paint finish.
Do not let your parking brake freeze
Under some conditions your parking
brake can freeze in the engaged position.
This is most likely to happen when
there is an accumulation of snow or
ice around or near the rear brakes or
if the brakes are wet. If there is a risk
the parking brake may freeze, apply
it only temporarily while you put the
gear selector lever in P and block the
rear wheels so the car cannot roll. Then
release the parking brake.
Do not let ice and snow accumulate
underneath
Under some conditions, snow and ice
can build up under the fenders and
interfere with the steering. When driving
in severe winter conditions where this
may happen, you should periodically
check underneath the car to be sure the
movement of the front wheels and the
steering components is not obstructed.
Don't place foreign objects
or materials in the engine
compartment
Placement of foreign object or materials
which prevent cooling of the engine, in
the engine compartment, may cause a
failure or combustion. The manufacturer
is not responsible for the damage caused
by such placement.
To keep locks from freezing
To keep the locks from freezing, squirt
an approved de-icer fluid or glycerine
into the key opening. If a lock is covered
with ice, squirt it with an approved de-
icing fluid to remove the ice. If the lock
is frozen internally, you may be able to
thaw it out by using a heated key. Handle
the heated key with care to avoid injury.

Hazard Warning Flasher ........................................................................\
.........7-2
In Case of an Emergency While Driving ........................................................7-2
If the Engine Stalls While Driving ........................................................................\
..... 7-2
If the Engine Stalls at a Crossroad or Crossing ....................................................... 7-2
If you Have a Flat Tire While Driving ........................................................................\
7-3
If the Engine Will not Start ........................................................................\
.....7-3If the Engine Doesn’t Turn Over or Turns Over Slowly ............................................7-3
If the Engine Turns Over Normally but Doesn’t Start ..............................................7-3
Jump Starting ........................................................................\
........................ 7-4
If the Engine Overheats ........................................................................\
......... 7-6
Tire Pressure Monitoring System (TPMS) ...................................................... 7-7
Check Tire Pressure ........................................................................\
........................... 7-7
Tire Pressure Monitoring System ........................................................................\
.... 7-8
Low Tire Pressure Telltale ........................................................................\
................ 7-9
Low Tire Pressure LCD Display with Position Indicator ......................................... 7-9
TPMS Malfunction Indicator ........................................................................\
........... 7-10
Changing a Tire with TPMS ........................................................................\
............ 7-10
If you Have a Flat Tire (With Spare Tire) ...................................................... 7-12Jack and Tools ........................................................................\
................................. 7-12
Changing Tires ........................................................................\
................................. 7-13
Towing ...................................................................\
........................................ 7-18
Towing Service ........................................................................\
................................ 7-18
Emergency Towing ........................................................................\
.......................... 7-19
7. Emergency Situations
7