
06
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Rear Cross-Traffic Collision-Avoidance Assist (RCCA) system
LeftLeft
ODN8H069203LODN8H069203L
RightRight
ODN8H069204LODN8H069204L
LeftLeft
ODN8069038ODN8069038
RightRight
ODN8069038ODN8069038
If the risk of collision is detected while RCCW is generated, brake is controlled. The
instrument cluster will inform the driver of the brake control. If the rear view monitor
system is in activation, a message will also appear on the infotainment system screen.
After the brake control, the driver must immediately depress the brake pedal and
check the surroundings. - The brake activation by the system lasts for about 2 seconds. The driver must pay attention as the brake is disengaged after 2 seconds.
- The brake control by the system is cancelled if the driver depresses the brake pedal
with sufficient power.
- Brake control is activated once for each right/left approach after shifting the shift
button to R (Reverse).
The brake control may not operate properly according to the status of the ESC
(Electronic Stability Control). The same warning message is displayed on the
instrument cluster for this case also.
- When the ESC (Electronic Stability Control) warning light is on.
- When the ESC (Electronic Stability Control) is engaged in a different function.

06
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Detecting Sensors
ODN8069031LODN8069031L
The rear corner radars are the sensors
inside the rear bumper for detecting the
side and rear areas. Always keep the rear
bumper clean for proper operation of the
system.
CAUTION
• The system may not work properly
when the bumper has been
damaged, or if the rear bumper has
been replaced or repaired.
• The system may turn off due to
strong electromagnetic waves.
• Always keep the sensors clean.
• NEVER arbitrarily disassemble the
sensor component nor apply any
impact on the sensor component.
• Be careful not to apply unnecessary
force on the radar sensor or sensor
cover. If the sensor is forcibly moved
out of proper alignment, the system
may not operate correctly. In this
case, a warning message may not
be displayed. Have the vehicle
inspected by an authorized HYUNDAI
dealer.
• Do not apply foreign objects such as
a bumper sticker or a bumper guard
near the radar sensor or apply paint
to the sensor area. Doing so may
adversely affect the performance of
the sensor.
Warning message
OIK057092LOIK057092L
Blind-Spot Collision Warning (BCW)
system disabled. Radar blocked
This warning message may appear when:
One or bo
th of the sensors on the rear
bumper is blocked by dirt or snow or a
foreign object.
Driving in rural areas where the sensor
does not detect another vehicle for an
extended period of time.
When there is inclement weather such as
heavy snow or rain.

While Driving6-128
If any of these conditions occur, the
system will turn off automatically.
When BCW canceled warning message
is displayed in the cluster, check to make
sure that the rear bumper is free from
any dirt or snow in the areas where the
sensor is located. Remove any dirt, snow,
or foreign material that could interfere
with the radar sensors.
After any dirt or debris is removed, the
system should operate normally after
about 10 minutes of driving the vehicle.
If the system still does not operate
normally have your vehicle inspected by
an authorized HYUNDAI dealer.
Information
Turn off BCW, BCA and RCCA system
when a trailer or carrier is installed.
Deactivate BCW and BCA system
by selecting “User Settings → Driver
Assistance → Blind-Spot Safety → Off”
Deactivate RCCW and RCCA system
by deselecting “User Settings → Driver
Assistance → Parking Safety → Rear
Cross-Traffic Safety”.
Type AType AType BType B
OAD058169LOAD058169LOTM058151LOTM058151L
Check Blind-Spot Collision Warning
(BCW) system
If there is a problem with BCW system,
a w
arning message will appear. The
system will turn off automatically. RCCW
and RCCA will not operate also if BCW
system turns off due to malfunction.
Have the vehicle inspected by an
authorized HYUNDAI dealer.
Limitations of the System
The driver must be cautious in the below
situations, because the system may not
detect other vehicles or objects in certain
circumstances.
• When a trailer or carrier is installed.
• The vehicle drives in inclement weather such as heavy rain or snow.
• The radar sensor is polluted with rain, snow, mud, etc.
• The rear bumper where the radar sensors are located is covered with
a foreign object such as a bumper
sticker, a bumper guard, a bike rack,
etc.
• The rear bumper is damaged, or the sensor is out of the original default
position.
![Hyundai Sonata 2020 Owners Manual 06
6-131
OHI058318LOHI058318L
[A] : Vehicle
• When the vehicle is parked diagonallyThe system may not operate properly
when the vehicle is parked diagonally.
In certain instances, when the
diagon Hyundai Sonata 2020 Owners Manual 06
6-131
OHI058318LOHI058318L
[A] : Vehicle
• When the vehicle is parked diagonallyThe system may not operate properly
when the vehicle is parked diagonally.
In certain instances, when the
diagon](/manual-img/35/16773/w960_16773-414.png)
06
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OHI058318LOHI058318L
[A] : Vehicle
• When the vehicle is parked diagonallyThe system may not operate properly
when the vehicle is parked diagonally.
In certain instances, when the
diagonally parked vehicle is pulled out
of the parking space, the system may
not detect the vehicle approaching
from the rear left/right of your vehicle.
In this case, the warning or brake may
not operate properly.
Always pay attention to your
surrounding while driving.
ODN8069042LODN8069042L
• When the vehicle is on/near a slopeThe system may not operate properly
when the vehicle is on/near a slope.
In certain instances, the system may
not detect the vehicle approaching
from the rear left/right and the
warning or brake may not operate
properly.
Always pay attention to your
surrounding while driving.

06
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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.
SPECIAL DRIVING CONDITIONS

06
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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.

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Certification label
OBH059070OBH059070
The certification label is located on the
driver’s door sill at the center pillar and
shows the maximum allowable weight of
the fully loaded vehicle. This is called the
GVWR (Gross Vehicle Weight Rating). The
GVWR includes the weight of the vehicle,
all occupants, fuel and cargo.
This label also tells you the maximum
weight that can be supported by the
front and rear axles, called Gross Axle
Weight Rating (GAWR).
The total weight of the vehicle, including
all occupants, accessories, cargo, and
trailer tongue load must not exceed the
Gross Vehicle Weight Rating (GVWR) or
the Gross Axle Weight Rating (GAWR).
To find out the actual loads on your front
and rear axles, you need to go to a weigh
station and weigh your vehicle. Be sure
to spread out your load equally on both
sides of the centerline.
WARNING
Overloading
• Never exceed the GVWR for your
vehicle, the GAWR for either the front
or rear axle and vehicle capacity
weight. Exceeding these ratings
can affect your vehicle’s handling
and braking ability, and cause an
accident.
• Do not overload your vehicle.
Overloading your vehicle can cause
heat buildup in your vehicle’s tires
and possible tire failure, increased
stopping distances and poor vehicle
handling-all of which may result in a
crash.
NOTICE
Overloading your vehicle may cause
damage. Repairs would not be covered
by your warranty. Do not overload your
vehicle.
WARNING
If you carry items inside your vehicle
(e.g., suitcases, tools, packages, or
anything else), they are moving as fast
as the vehicle. If you have to stop or
turn quickly, or if there is a crash, the
items will keep going and can cause
an injury if they strike the driver or a
passenger.
• Put items in the cargo area of your
vehicle. Try to spread the weight
evenly.
• Do not stack items, like suitcases,
inside the vehicle above the tops of
the seats.
• Do not leave an unsecured child
restraint in your vehicle.
• When you carry something inside the
vehicle, secure it.

Emergency Situations7-10
TPMS 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 individual tire pressures
in the cluster LCD display will not be
available. Have the system checked by
an authorized HYUNDAI dealer as soon
as possible.
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 LCD position indicator 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)
CAUTION
It is recommended that you do not use a
puncture-repairing agent not approved
by HYUNDAI dealer to repair and/or
inflate a low pressure tire. Tire sealant
not approved by HYUNDAI dealer may
damage the tire pressure sensor.
The spare tire 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 LCD position indicator and
TPMS Malfunction Indicator will go off
within a few minutes of driving.
If the indicators do not disappear after a
few minutes, please visit an authorized
HYUNDAI dealer.