2021 HYUNDAI SONATA temperature

06
6-121
• The shadow is on the lane marker by
a median strip, trees, guardrail, noise
barriers, etc.
• The lane markers are complicated or a
structure substitutes for the lines such
as a construction area.
• There are crosswalk signs or other
symbols on the road.
• The lane marker in a tunnel is stained
with oil, etc.
• The lane suddenly disappears such as
at the intersection.
• Driving the shared lane usage (bicycle
lane, pedestrians lane, etc.)
When external condition is intervened
• The brightness outside changes
suddenly such as when entering or
exiting a tunnel, or when passing
under a bridge.
• The brightness outside is too low such
as when the headlamps are not on at
night or the vehicle is going through
a tunnel.
• There is a boundary structure in the
roadway such as a concrete barrier,
guardrail and reflector post that is
inadvertently being detected by the
camera.
• When light coming from a street light
or an oncoming vehicle is reflected on
a wet road surface such as a puddle in
the road.
• The field of view in front is obstructed
by sun glare. •
There is not enough distance between
you and the vehicle in front to be
able to detect the lane marker or the
vehicle ahead is driving on the lane
marker.
• Driving on a steep grade, over a hill, or
when driving on a curved road.
• The adverse road conditions cause
excessive vehicle vibrations while
driving.
• The surrounding of the inside rear
view mirror temperature is high due to
direct sunlight, etc.
• The sensor recognition changes
suddenly when passing over a speed
bump or driving on a steep up/down
or right/left grade
When front visibility is poor
• The windshield or the camera lens is
blocked with dirt or debris.
• The windshield glass is fogged up; a
clear view of the road is obstructed.
• Placing objects on the dashboard, etc.
• The sensor cannot detect the lane
because of fog, heavy rain or snow.

6-136
• The vehicle height gets lower or
higher due to heavy loading in a trunk,
abnormal tire pressure, etc.
• When the temperature of the rear
bumper is high.
• When the sensors are blocked by
other vehicles, walls or parking-lot
pillars.
• The vehicle drives on a curved road.
• The road pavement (or the peripheral
ground) abnormally contains metallic
components (i.e. possibly due to
subway construction).
• There is a fixed object near the
vehicle, such as a guardrail.
• While going down or up a steep
road where the height of the lane is
different.
• Driving on a narrow road where trees
or grass or overgrown.
• Driving in rural areas where the sensor
does not detect another vehicle for an
extended period of time.
• Driving on a wet road.
• Driving on a road where the guardrail
or wall is in double structure.
• A big vehicle is near such as a bus or
truck.
• When the other vehicle approaches
very close.
• When the other vehicle passes at a
very fast speed.
• While changing lanes. •
If the vehicle has started at the same
time as the vehicle next to you and
has accelerated.
• When the vehicle in the next lane
moves two lanes away from you or
when the vehicle two lanes away
moves to the next lane from you.
• A motorcycle or bicycle is near.
• A flat trailer is near.
• If there are small objects in the
detecting area such as a shopping
cart or a baby stroller.
• If there is a low height vehicle such as
a sports car.
• The brake pedal is depressed.
• ESC (Electronic Stability Control) is
activated.
• ESC (Electronic Stability Control)
malfunctions.
• The tire pressure is low or a tire is
damaged.
• The brake is reworked.
• The vehicle sharply stops.
• Temperature is extremely low around
the vehicle.
• The vehicle severely vibrates while
driving over a bumpy road, uneven/
bumpy road, or concrete patch.
• The vehicle drives on a slippery
surface due to snow, water puddle,
or ice.
• If the vehicle moves backward after
the vehicle is parked with a diagonal
line
While Driving

6-140
Hazardous Driving Conditions
When hazardous driving elements
are encountered such as water, snow,
ice, mud and sand, take the below
suggestions:
• Drive cautiously and keep a longer
braking distance.
• Avoid abrupt braking or steering.
• When your vehicle is stuck in
snow, mud, or sand, use second
gear. Accelerate slowly to avoid
unnecessary wheel spin.
• Put sand, rock salt, tire chains or other
non-slip materials under the wheels to
provide additional traction while the
vehicle becomes stuck in ice, snow,
or mud.
WARNING
Downshifting with an automatic
transmission while driving on slippery
surfaces can cause an accident. The
sudden change in tire speed could
cause the tires to skid. Be careful when
downshifting on slippery surfaces.
Rocking the Vehicle
If it is necessary to rock the vehicle to
free it from snow, sand, or mud, first turn
the steering wheel right and left to clear
the area around your front wheels. Then,
shift back and forth between R (Reverse)
and a forward gear.
Try to avoid spinning the wheels, and do
not race the engine.
To prevent transmission wear, wait until
the wheels stop spinning before shifting
gears. Release the accelerator pedal
while shifting, and press lightly on the
accelerator pedal while the transmission
is in gear. Slowly spinning the wheels in
forward and reverse directions causes a
rocking motion that may free the vehicle.
WARNING
If the vehicle is stuck and excessive
wheel spin occurs, the temperature
of the tires can increase very quickly.
If the tires become damaged, a tire
blow out or tire explosion can occur.
This condition is dangerous - you and
others may be injured. Do not attempt
this procedure if people or objects are
anywhere near the vehicle.
If you attempt to free the vehicle, the
vehicle can overheat quickly, possibly
causing an engine compartment fire
or other damage. Try to avoid spinning
the wheels as much as possible to
prevent overheating of either the tires
or the engine. DO NOT allow the vehicle
to spin the wheels above 35 mph (56
km/h).
Information
The ESC system must be turned OFF
before rocking the vehicle.
NOTICE
If you are still stuck after rocking the
vehicle a few times, have the vehicle
pulled out by a tow vehicle to avoid
engine overheating, possible damage to
the transmission, and tire damage. See
"Towing" in chapter 7.
SpeCI al d r I v I n G Cond I t I on S
While Driving

6-144
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
manufacturer’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 Driving

Emergency Situations
7-6
If your temperature gauge indicates
overheating, you experience a loss of
power, or hear loud pinging or knocking,
the engine may be overheating. If this
happens, you should:
1.
Pull o
ff the road and stop as soon as it
is safe to do so.
2.

Place the shift butt
on in P (Park)
and set the parking brake. If the air
conditioning is ON, turn it OFF.
3.

If engine coolan
t is running out under
the vehicle or steam is coming out
from the hood, stop the engine. Do
not open the hood until the coolant
has stopped running or the steaming
has stopped. If there is no visible
loss of engine coolant and no steam,
leave the engine running and check
to be sure the engine cooling fan is
operating. If the fan is not running,
turn the engine off.
WARNING
While the engine is running,
keep hands, clothing and tools
away from the moving parts
such as the cooling fan and
drive belt to prevent serious
injury.
4.
Check f

or coolant leaking from the
radiator, hoses or under the vehicle. (If
the air conditioning had been in use, it
is normal for cold water to be draining
from it when you stop.)
5.

If engine coolan
t is leaking out, stop
the engine immediately and call the
nearest authorized HYUNDAI dealer
for assistance.
WARNING
Your vehicle is equipped
with a pressurized coolant
reserve tank. NEVER remove
the engine coolant reservoir
tank/radiator cap or the drain
plug while the engine and
radiator are HOT. Hot coolant
and steam may blow out under
pressure, causing serious
injury.
Turn the engine off and wait until the
engine cools down. Use extreme care
when removing the engine coolant
reservoir tank/radiator cap. Wrap
a towel or thick rag around it, and
turn it counterclockwise slowly to
release some of the pressure from the
system. Step back while the pressure is
released.
When you are sure all the pressure has
been released, continue turning the cap
counterclockwise to remove it.
6.

If y

ou cannot find the cause of the
overheating, wait until the engine
temperature has returned to normal.
Then, if coolant has been lost,
carefully add coolant to the reservoir
to bring the fluid level in the reservoir
up to the halfway mark.
7.
Pr

oceed with caution, keeping alert
for further signs of overheating. If
overheating happens again, call
an authorized HYUNDAI dealer for
assistance.
CAUTION
Serious loss of coolant indicates a
leak in the cooling system and should
be checked as soon as possible by an
authorized HYUNDAI dealer.
If the engIne overhea ts

07
7-9
Low Tire Pressure Telltale
Low Tire Pressure LCD Display
with Position Indicator
ODN8049019L
When the tire pressure monitoring
system warning indicators are
illuminated and the warning message
is displayed on the cluster LCD
display, one or more of your tires is
significantly under-inflated. The LCD
position indicator will indicate which
tire is significantly under-inflated by
illuminating the corresponding position
light.
If any of your tire pressures are indicated
as being low, immediately reduce
your speed, avoid hard cornering, and
anticipate increased stopping distances.
You should stop and check your tires
as soon as possible. Inflate the tires to
the proper pressure as indicated on the
vehicle’s placard or tire inflation pressure
label located on the driver’s side center
pillar outer panel.
If you cannot reach a service station or
if the tire cannot hold the newly added
air, replace the low pressure tire with the
spare tire. (if equipped)
The Low Tire Pressure LCD position
indicator will remain on and the TPMS
Malfunction Indicator may blink for one
minute and then remain illuminated until
you have the low pressure tire repaired
and replaced on the vehicle.
NOTICE
The spare tire is not equipped with a
tire pressure sensor.
CAUTION
In winter or cold weather, the Low Tire
Pressure Telltale may be illuminated if
the tire pressure was adjusted to the
recommended tire inflation pressure
in warm weather. It does not mean
your TPMS is malfunctioning because
the decreased temperature leads to a
proportional lowering of tire pressure.
When you drive your vehicle from a
warm area to a cold area or from a cold
area to a warm area, or the outside
temperature is greatly higher or lower,
you should check the tire inflation
pressure and adjust the tires to the
recommended tire inflation pressure.
WARNING
Low pressure damage
Significantly low tire pressure makes
the vehicle unstable and can contribute
to loss of vehicle control and increased
braking distances.
Continued driving on low pressure tires
can cause the tires to overheat and fail.

08
8 -7
Follow Normal Maintenance Schedule if the vehicle is usually operated where none of
the following conditions apply. If any of the following conditions apply, you must follow
the Maintenance Under Severe Usage Conditions.
• Repeated short distance driving.
• Driving in dusty conditions or sandy areas.
• Extensive use of brakes.
• Driving in areas where salt or other corrosive materials are used.
• Driving on rough or muddy roads.
• Driving in mountainous areas.
• Extended periods of idling or low speed operation.
• Driving for a prolonged period in cold temperatures and/or extremely humid
climates.
• More than 50% driving in heavy city traffic during hot weather above 90°F (32°C).
• Engine oil usage which is not recommended (semi-synthetic, mineral type, lower
grade spec, etc.)
For additional information or assistance see your authorized HYUNDAI dealer.
NOTICE
After 10 years or 100,000 miles, we recommend to use severe maintenance
schedule.
Scheduled Maintenance ServiceS

08
8-11
Maintenance Under Severe Usage Conditions (Smartstream G1.6 T-GDi)
The following items must be serviced more frequently on cars normally used under
severe driving conditions. Refer to the chart below for the appropriate maintenance
intervals.
R: Replace or change.
I : Inspect and if necessary, adjust, correct, clean or replace.
MAINTENANCE ITEMMAINTENANCE
OPERATION MAINTENANCE
INTERVALS DRIVING
CONDITION
Engine oil and filter *
1R Every 5,000 miles or
6 months A, B, C, D, E, F,
G, H, I, J, K, L
Air cleaner filter RMore frequently C, E
Spark plugs RMore frequently A, B, H, I, K
Automatic transmission fluid R Every 60,000 miles A, C, E, F, G, I
Front brake disc/pads, calipers I More frequently C, D, G, H
Rear brake shoes or disc/pads IMore frequently C, D, G, F
Parking brake IMore frequently C, D, G, H
Steering gear box, linkage &
boots/ lower arm ball joint,
upper arm ball joint I
More frequently C, D, E, F, G,
H, I
Suspension mounting bolts IMore frequently C, D, E, F, G,
H, I
Drive shafts and boots IEvery 3,000 miles or
6 months C, D, E, F, G,
H, I
Climate control air filter
(for evaporator and blower unit) R
More frequently C, E
*1 : Requires grade engine oil. If a lower grade
engine oil (mineral oil including Semi-synthetic) is used, then the engine oil and engine
oil filter must be replaced as indicated for severe maintenance condition.
Severe Driving Conditions
A. Repeatedly driving short distances
of less than 5 miles (8 km) in normal
temperature or less than 10 miles (16
km) in freezing temperature
B.

Ext
ensive engine idling or low speed
driving for long distances
C.
Driving on r

ough, dusty, muddy,
unpaved, graveled or salt- spread
roads
D.
Driving in ar

eas using salt or other
corrosive materials or in very cold
weather
E.

Driving in sandy ar
eas F.
Driving in hea

vy traffic area over 90°F
(32°C)
G. Driving on uphill, do wnhill, or
mountain road
H.

T
owing a Trailer, or using a camper, or
roof rack
I.

Driving as a pa
trol car, taxi, other
commercial use or vehicle towing
J.
Driving o

ver 106 mph (170 km/h)
K. Frequently driving in stop-and-go conditions
L.

E
ngine oil usage which is not
recommended (semi-synthetic, mineral
type, lower grade spec, etc.)