2021 HYUNDAI SONATA HYBRID flat tire

While Driving
6 -74
• 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 or
structure 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 abruptly changes driving
direction.
• The vehicle makes sharp lane
changes.
• 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.
• Lane Keeping Assist does not operate
normally. (if equipped)
• For more information, refer to “Lane
Keeping Assist (LKA)” in this chapter.

While Driving
6-128
• 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
6-134
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.

7. Emergency situations
Hazard Warning Flasher ........................................................................\
............7-2
In Case of an Emergency While driving
...........................................................7-2If 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 ........................................................................\
........7-3
If the 12 Volt Battery Is Discharged
..................................................................7-4Before Jump Starting ........................................................................\
...........................7-4
Jump Starting ........................................................................\
.......................................7-5
If the Engine Overheats ........................................................................\
.............7-7
Tire Pressure Monitoring System (TPMS)
........................................................7-9Check Tire Pressure ........................................................................\
..............................7-9
Tire Pressure Monitoring System ........................................................................\
.......7-10
Low Tire Pressure Telltale ........................................................................\
....................7-11
Low Tire Pressure LCD Display with Position Indicator .............................................7-11
TPMS (Tire Pressure Monitoring System) Malfunction Indicator .............................7-12
Changing a Tire with TPMS ........................................................................\
................7-12
If You Have a Flat Tire (with Spare Tire) ..........................................................7-14Jack and Tools ........................................................................\
.....................................7-14
Changing Tires ........................................................................\
.....................................7-15
Jack Label ........................................................................\
............................................7-19
If You Have a Flat Tire (with Tire Mobility Kit) ................................................7-20Introduction ........................................................................\
........................................7-20
Notes on the Safe Use of the Tire Mobility Kit ..........................................................7-21
Components of the Tire Mobility Kit ........................................................................\
.7-22
Using the Tire Mobility Kit ........................................................................\
.................7-23
Checking the Tire Inflation Pressure ........................................................................\
.7-25
Towing ........................................................................\
......................................7-26Towing Service ........................................................................\
...................................7-26
Removable Towing Hook ........................................................................\
....................7-27
Emergency Towing ........................................................................\
.............................7-28
Emergency situations
7

07
7-3
If You Have a Flat Tire While
Driving
If a tire goes flat while you are driving:
• Take your foot off the accelerator
pedal and let the vehicle slow down
while driving straight ahead. Do not
apply the brakes immediately or
attempt to pull off the road as this
may cause loss of vehicle control
resulting in an accident. When the
vehicle has slowed to such a speed
that it is safe to do so, brake carefully
and pull off the road. Drive off the
road as far as possible and park on
firm, level ground. If you are on a
divided highway, do not park in the
median area between the two traffic
lanes.
• When the vehicle is stopped, press the
hazard warning flasher button, shift
the gear to P (Park), apply the parking
brake, and press the Engine Start/Stop
button to the OFF position.
• Have all passengers get out of the
vehicle. Be sure they all get out on the
side of the vehicle that is away from
traffic.
• When changing a flat tire, follow the
instructions provided later in this
chapter.
IF THE ENGINE WILL NOT
S TA RT
• Be sure to shift the gear to P (Park).
The vehicle starts only when the gear
is in P (Park).
• This vehicle does not have a regular
12V battery that needs periodic
replacement. It is lithium ion polymer
type integrated into the HEV high
voltage battery. The vehicle has a
12V battery protection system that
cuts 12V battery from vehicle draw
to prevent full discharge. If vehicle
will not start, first try pressing the
12V Battery Reset switch (left side of
the steering wheel near the fuel door
open switch) to reconnect the 12V
battery, but you must start vehicle
within 15 seconds of pressing the 12V
Battery Reset switch. After starting
the vehicle (
indicator ON ),
operate the vehicle safely outdoors in
ready mode stopped and/or drive it
for 30 minutes total to charge the 12V
battery fully.
• Check the fuel level and add fuel if
necessary.
If the vehicle still does not start, call
an authorized HYUNDAI dealer for
assistance.
NOTICE
Push or pull starting the vehicle may
cause the catalytic converter to
overload which can lead to damage to
the emission control system.

Emergency situations
7-10
Tire Pressure Monitoring System
WARNING
Over-inflation or under-inflation can
reduce tire life, adversely affect vehicle
handling, and lead to sudden tire failure
that may cause loss of vehicle control
resulting in an accident.
Each tire, including the spare (if
provided), should be checked monthly
when cold and inflated to the inflation
pressure recommended by the vehicle
manufacturer on the vehicle placard
or tire inflation pressure label. (If your
vehicle has tires of a different size than
the size indicated on the vehicle placard
or tire inflation pressure label, you should
determine the proper tire inflation
pressure for those tires.)
As an added safety feature, your
vehicle has been equipped with a tire
pressure monitoring system (TPMS)
that illuminates a low tire pressure
telltale when one or more of your tires is
significantly under-inflated. Accordingly,
when the low tire pressure telltale
illuminates, you should stop and check
your tires as soon as possible, and inflate
them to the proper pressure. Driving on
a significantly under-inflated tire causes
the tire to overheat and can lead to tire
failure.
Under-inflation also reduces fuel
efficiency and tire tread life, and may
affect the vehicle’s handling and
stopping ability.
Please note that the TPMS is not a
substitute for proper tire maintenance,
and it is the driver’s responsibility to
maintain correct tire pressure, even if
under-inflation has not reached the level
to trigger illumination of the TPMS low
tire pressure telltale.
Your vehicle has also been equipped with
a TPMS malfunction indicator to indicate
when the system is not operating
properly. The TPMS malfunction
indicator is combined with the low
tire pressure telltale. When the system
detects a malfunction, the telltale will
flash for approximately one minute and
then remain continuously illuminated.
This sequence will continue upon
subsequent vehicle start-ups as long as
the malfunction exists.
When the malfunction indicator is
illuminated, the system may not be able
to detect or signal low tire pressure as
intended. TPMS malfunctions may occur
for a variety of reasons, including the
installation of replacement or alternate
tires or wheels on the vehicle that
prevent the TPMS from functioning
properly.
Always check the TPMS malfunction
telltale after replacing one or more tires
or wheels on your vehicle to ensure that
the replacement or alternate tires and
wheels allow the TPMS to continue to
function properly.
NOTICE
If any of the below happens, have
the system checked by an authorized
HYUNDAI dealer.
1. The Low Tire Pressure Telltale/TPMS
Malfunction Indicator does not
illuminate for 3 seconds when the
Engine Start/Stop button is pressed
to the ON position or the vehicle is in
the ready (
) mode.
2. The TPMS Malfunction Indicator
remains illuminated after blinking for
approximately 1 minute.
3. The Low Tire Pressure Position
Telltale remains illuminated.

07
7-11
Low Tire Pressure Telltale
Low Tire Pressure LCD Display
with Position Indicator
ODN8H070029N
When the tire pressure monitoring
system warning indicators are
illuminated and a warning message
displayed on the cluster LCD display,
one or more of your tires is significantly
under-inflated. The Low Tire Pressure
Position Telltale will indicate which
tire is significantly underinflated by
illuminating the corresponding position
light.
If either telltale illuminates, 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.
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.

Emergency situations
7-12
TPMS (Tire Pressure
Monitoring System)
Malfunction Indicator
The TPMS Malfunction Indicator
will illuminate after it blinks for
approximately one minute when there
is a problem with the Tire Pressure
Monitoring System.
Have the system checked by an
authorized HYUNDAI dealer as soon as
possible.
NOTICE
If there is a malfunction with the TPMS,
the Low Tire Pressure Position Telltale
will not be displayed even though the
vehicle has an under-inflated tire.
NOTICE
The TPMS Malfunction Indicator may
illuminate after blinking for one minute
if the vehicle is near electric power
supply cables or radio transmitters
such as police stations, government
and public offices, broadcasting
stations, military installations, airports,
transmitting towers, etc.
Additionally, the TPMS Malfunction
Indicator may illuminate if snow chains
are used or electronic devices such as
computers, chargers, remote starters,
navigation, etc. This may interfere with
normal operation of the TPMS.
Changing a Tire with TPMS
If you have a flat tire, the Low Tire
Pressure and Position telltales will come
on. Have the flat tire repaired by an
authorized HYUNDAI dealer as soon as
possible or replace the flat tire with the
spare tire (if equipped).
NOTICE
It is recommended that you do not use a
puncture-repairing agent not approved
by a HYUNDAI dealer to repair and/or
inflate a low pressure tire. Tire sealant
not approved by a HYUNDAI dealer may
damage the tire pressure sensor.
The spare tire (if equipped) does not
come with a tire pressure monitoring
sensor. When the low pressure tire or
the flat tire is replaced with the spare
tire, the Low Tire Pressure LCD position
indicator will remain on. Also, the TPMS
Malfunction Indicator will illuminate after
blinking for one minute if the vehicle
is driven at speed above 15.5 mph (25
km/h) for approximately 20 minutes.
Once the original tire equipped with
a tire pressure monitoring sensor is
reinflated to the recommended pressure
and reinstalled on the vehicle, the
Low Tire Pressure Telltale and TPMS
Malfunction Indicator will go off within a
few minutes of driving.
If the indicators do not extinguish after a
few minutes, please visit an authorized
HYUNDAI dealer.
Each wheel is equipped with a tire
pressure sensor mounted inside the tire
behind the valve stem (except for the
spare tire). You must use TPMS specific
wheels. It is recommended that you
always have your tires serviced by an
authorized HYUNDAI dealer.