2020 Hyundai Sonata brakes

01
1 -7
Detergent Fuel Additives
HYUNDAI recommends that you use
good quality gasolines treated with
detergent additives such as TOP TIER
Detergent Gasoline, which help prevent
deposit formation in the engine. These
gasolines will help the engine run
cleaner and enhance performance of
the Emission Control System. For more
information on TOP TIER Detergent
Gasoline, please go to the website (www.
toptiergas.com ).
For customers who do not use TOP Tier
Detergent Gasoline regularly, and have
problems starting or the engine does
not run smoothly, detergent-based
fuel additives that you can purchase
separately may be added to the gasoline.
If TOP TIER Detergent Gasoline is
not available, one bottle of additive
added to the fuel tank according to the
maintenance schedule is recommended
(refer to the Maintenance Schedule in
chapter 8).
Additives are available from your
authorized HYUNDAI dealer along with
information on how to use them. Do not
mix other additives.
Operation in foreign countries
If you are going to drive your vehicle in
another country, be sure to:
• Observe all regulations regarding
registration and insurance.
• Determine that acceptable fuel is
available. •
This vehicle should not be modified.
Modification of your vehicle could
affect its performance, safety or
durability and may even violate
governmental safety and emissions
regulations.
In addition, damage or performance
problems resulting from any
modification may not be covered
under warranty.
• If you use unauthorized electronic
devices, it may cause the vehicle to
operate abnormally, wire damage,
battery discharge and fire. For your
safety, do not use unauthorized
electronic devices.
VEHICLE BREAK-IN
PROCESS
By following a few simple precautions for
the first 600 miles (1,000 km) you may
add to the performance, economy and
life of your vehicle.
• Do not race the engine.
• While driving, keep your engine speed
(rpm, or revolutions per minute)
between 2,000 rpm and 4,000 rpm.
• Do not maintain a single speed for
long periods of time, either fast or
slow. Varying engine speed is needed
to properly break-in the engine.
• Avoid hard stops, except in
emergencies, to allow the brakes to
seat properly.
VEHICLE MODIFICATIONS

Instrument Cluster4-8
Parking Brake & Brake Fluid
Warning Light
This warning light illuminates:
• When you place the ignition switch to the ON position.

-

The parking brake light illuminates
for about 3 seconds and will then
turn off once the parking brake is
released.
• Whenever the parking brake is applied.
• Whenever the brake fluid level in the reservoir is low.
- If the warning light illuminates with the parking brake released, it
indicates that the brake fluid level in
the reservoir is low.
If the brake fluid level in the reservoir is
low:
1. Drive carefully to the nearest safe loca
tion and stop your vehicle.
2. With the engine stopped, check the brake fluid level immediately
and add fluid as required (For more
information, refer to "Brake Fluid" in
chapter 8). After adding brake fluid,
check all brake components for fluid
leaks. If a brake fluid leak is found, or
if the warning light remains on, or if
the brakes do not operate properly, do
not drive the vehicle. Have the vehicle
inspected by an authorized HYUNDAI
dealer. Dual-diagonal braking system
Your vehicle is equipped with dual-
diagonal br

aking systems. This means
you still have braking on two wheels even
if one of the dual systems should fail.
With only one of the dual systems
working, more than normal pedal travel
and greater pedal pressure is required to
stop the vehicle.
If the brakes fail while you are driving,
shift to a lower gear for additional engine
braking and stop the vehicle as soon as it
is safe to do so.
WARNING
Parking Brake & Brake Fluid Warning
Light
Driving the vehicle with a warning 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.

Instrument Cluster4-12
Master Warning Light
This indicator light illuminates:
When there is a malfunction in operation
in an
y of the following systems:
- Forward Collision-Avoidance Assist system malfunction (if equipped)
- Forward Collision-Avoidance Assist radar blocked (if equipped)
- Blind-Spot Collision Warning system malfunction (if equipped)
- Blind-Spot Collision Warning radar blocked (if equipped)
- High Beam Assist malfunction (if equipped)
- Lamp malfunction (if equipped)
- Smart Cruise Control malfunction (if equipped)
- Tire Pressure Monitoring System (TPMS) malfunction (if equipped)
To identify the details of the warning,
look at the LCD display.
Low Tire Pressure Warning
Light (if equipped)
This warning light illuminates:
• When you place the ignition in the ON position.
-

It illuminates for approximately 3
seconds and then goes off.
• When one or more of your tires are significantly underinflated. (The
location of the underinflated tires is
displayed on the LCD display.)
For more information, refer to "Tire
Pressure Monitoring System (TPMS)" in
chapter 7. This warning light remains ON after
blinking for

approximately 60 seconds, or
repeatedly blinks ON and OFF in 3 second
intervals:
When there is a malfunction with the
TPMS.
In this case, ha

ve the vehicle inspected
by an authorized HYUNDAI dealer as
soon as possible.
For more information, refer to "Tire
Pressure Monitoring System (TPMS)" in
chapter 7.
WARNING
Safe Stopping
• The TPMS cannot alert you to severe
and sudden tire damage caused by
external factors.
• If you notice any vehicle instability,
immediately take your foot off the
accelerator pedal, apply the brakes
gradually with light force, and slowly
move to a safe position off the road.
Electronic Stability Control
(ESC) Indicator Light
This indicator light illuminates:
• When you place the ignition switch to
the ON position.
-

The Electronic Stability Control
indicator light illuminates for about
3 seconds and then goes off.
• Whenever there is a malfunction with the ESC system.
If this occurs, have the vehicle
inspected by an authorized HYUNDAI
dealer.
This indicator light blinks:
While the ESC is operating.
F
or more information, refer to
“Electronic Stability Control (ESC)” in
chapter 6.

Convenient Features5-94
• Outside air temperature is hot or cold.
• The wind is either strong (over 12 mph (20 km/h)) or blowing perpendicular
to the rear bumper.
• Objects generating excessive noise, such as vehicle horns, loud
motorcycle engines, or truck air
brakes, are near the vehicle.
• An ultrasonic sensor with a similar frequency is near the vehicle.
• There is ground height difference between the vehicle and the
pedestrian.
• The image of the pedestrian in the rear view camera is indistinguishable
from the background.
• The pedestrian is near the rear edge of the vehicle.
• The pedestrian is not standing upright.
• The pedestrian is either too short or too tall for the system to recognize.
• The pedestrian is wearing clothes that are hard for the system to recognize.
• The pedestrian is wearing a cloth that does not reflect ultrasound well.
• The size, thickness, height, or shape of the object does not reflect ultrasound
well (e.g., pole, bush, curbs, carts,
edge of a wall, etc.).
• The pedestrian or the object is moving.
• The pedestrian or the object is very close to the rear of the vehicle.
• A wall is behind the pedestrian or the object.
• The object is not at the rear center of the vehicle.
• The plane of the obstacle is not parallel to the rear bumper.
• The road is slippery or inclined.
• The driver backs up the vehicle immediately after shifting to R
(Reverse).
• The driver accelerates or turns the vehicle. Reverse Parking Collision-Avoidance
Assist system may alert the driver or
apply brake power unnecessarily under
the following conditions even if there are
“no” pedestrians or objects.
• Any non-factory equipment or
accessories have been installed.
• The condition of the vehicle is unstable due to an accident or other
causes.
• The height of the bumper or the sensor installation has been modified.
• The bumper height has changed due to heavy loads, tire pressure change,
etc.
• The rear view camera or the ultrasonic sensor(s) is stained with foreign
matter, such as snow, dirt, etc.
• The pattern on the road is mistaken for a pedestrian.
• There is a shadow or a light reflecting on the ground.
• Pedestrians or objects are around the path of the vehicle.
• Objects generating excessive noise, such as vehicle horns, loud
motorcycle engines, or truck air
brakes, are near the vehicle.
• The vehicle is backing towards a narrow passage or parking space.
• The vehicle is backing towards an uneven road surface, such as unpaved
road, gravel, bump, gradient, etc.
• A trailer is attached to the vehicle

05
5-97
To Turn off Reverse Parking
Distance Warning System
(if equipped)
ODN8059057LODN8059057L
Push the button to turn off Reverse
Parking Distance Warning system. The
indicator light on the button will turn on.
Non-Operational Conditions
of Reverse Parking Distance
Warning System
Reverse Parking Distance Warning
system may not operate normally when:
• Moisture is frozen to the sensor.
• Sensor is covered with foreign matter, such as snow or water, or the sensor
cover is blocked.
There is a possibility of Reverse
Parking Distance Warning system
malfunction when:
• Driving on uneven road surfaces such as unpaved roads, gravel, bumps, or
gradient.
• Objects generating excessive noise such as vehicle horns, loud
motorcycle engines, or truck air
brakes can interfere with the sensor.
• Heavy rain or water spray is present.
• Wireless transmitters or mobile phones are present near the sensor.
• The sensor is covered with snow.
• Any non-factory equipment or accessories have been installed, or if
the vehicle bumper height or sensor
installation has been modified.
Detecting range may decrease
when:
Outside air temperature is extremely hot
or cold.

Convenient Features5-102
Non-Operational Conditions
of Forward/Reverse Parking
Distance Warning System
Forward/Reverse Parking Distance
Warning system may not operate
normally when:
• Moisture is frozen to the sensor.
• Sensor is covered with foreign matter, such as snow or water, or the sensor
cover is blocked.
There is a possibility of Forward/
Reverse Parking Distance Warning
system malfunction when:
• Driving on uneven road surfaces such as unpaved roads, gravel, bumps, or
gradient.
• Objects generating excessive noise such as vehicle horns, loud
motorcycle engines, or truck air
brakes can interfere with the sensor.
• Heavy rain or water spray is present.
• Wireless transmitters or mobile phones are present near the sensor.
• The sensor is covered with snow.
• Any non-factory equipment or accessories have been installed, or if
the vehicle bumper height or sensor
installation has been modified.
Detecting range may decrease
when:
Outside air temperature is extremely hot
or cold.
The following objects may not be
recognized by the sensor:
• Sharp or slim objects such as ropes, chains or small poles.
• Objects, which tend to absorb sensor frequency such as clothes, spongy
material or snow.
• Undetectable objects smaller than 40 in (100 cm) and narrower than 6 in (14
cm) in diameter.
WARNING
Your new vehicle warranty does not
cover any accidents or damage to the
vehicle or injuries to its occupants
related to Forward/Reverse Parking
Distance Warning system. Always drive
safely and cautiously.

6
6. While Driving
Before Driving ........................................................................\
........................ 6-5Before Entering the Vehicle ........................................................................\
............. 6-5
Before Starting ........................................................................\
................................. 6-5
Ignition Switch ........................................................................\
.......................6-6Key Ignition Switch ........................................................................\
........................... 6-6
Engine Start/Stop Button ........................................................................\
................ 6-9
Remote Start ........................................................................\
.................................... 6-12
Automatic Transmission ........................................................................\
.......6-13Automatic Transmission Operation ........................................................................\
6-13
Parking .................................................................\
....................................................6-16
LCD Display Message ........................................................................\
...................... 6-17
Good Driving Practices ........................................................................\
..................6-18
Paddle Shifter (Manual Shift Mode) ......................................................................6-\
19
Brake System ........................................................................\
........................ 6-20Power Brakes ........................................................................\
.................................. 6-20
Disc Brakes Wear Indicator......................................................................\
.............. 6-20
Electronic Parking Brake (EPB) ........................................................................\
....... 6-21
Auto Hold ........................................................................\
........................................ 6-24
Anti-lock Brake System (ABS) ..................................................................... 6-27Electronic Stability Control (ESC) ........................................................................\
. 6-29
Vehicle Stability Management (VSM) ....................................................................6-31
Hill-Start Assist Control (HAC) ........................................................................\
....... 6-32
Good Braking Practices ................................................................\
......................... 6-32
ISG (Idle Stop and Go) system..................................................................... 6-33To Activate the ISG System ........................................................................\
............ 6-33
To Deactivate the ISG System ........................................................................\
....... 6-35
ISG System Malfunction ........................................................................\
................ 6-35
Battery Sensor Deactivation ........................................................................\
.......... 6-36
Drive Mode Integrated Control System ...................................................... 6-37Drive Mode ........................................................................\
..................................... 6-37

While Driving6-18
Good Driving Practices
• Never shift the gear from P (Park) or N (Neutral) to any other position with
the accelerator pedal depressed.
• Never shift the gear into P (Park) when the vehicle is in motion.
• Be sure the vehicle is completely stopped before you attempt to shift
into R (Reverse) or D (Drive).
• Do not shift the gear to N (Neutral) when driving. Doing so may result
in an accident because of a loss of
engine braking and the transmission
could be damaged.
• Do not drive with your foot resting on the brake pedal. Even light, but
consistent pedal pressure can result
in the brakes overheating, brake wear
and possibly even brake failure.
• When driving in the manual shift mode, slow down before shifting to a
lower gear. Otherwise, the lower gear
may not be engaged if the engine
rpms are outside of the allowable
range.
• Always apply the parking brake when leaving the vehicle. Do not depend on
placing the transmission in P (Park) to
keep the vehicle from moving.
• Exercise extreme caution when driving on a slippery surface. Be
especially careful when braking,
accelerating or shifting gears. On a
slippery surface, an abrupt change
in vehicle speed can cause the drive
wheels to lose traction and may cause
loss of vehicle control resulting in an
accident
• Optimum vehicle performance and economy is obtained by smoothly
depressing and releasing the
accelerator. WARNING
To reduce the risk of SERIOUS INJURY
or DEATH:
• ALWAYS wear your seatbelt. In a
collision, an unbelted occupant
is significantly more likely to be
seriously injured or killed than a
properly belted occupant.
• Avoid high speeds when cornering or
turning.
• Do not make quick steering wheel
movements, such as sharp lane
changes or fast, sharp turns.
• The risk of rollover is greatly
increased if you lose control of your
vehicle at highway speeds.
• Loss of control often occurs if two or
more wheels drop off the roadway
and the driver over steers to reenter
the roadway.
• In the event your vehicle leaves
the roadway, do not steer sharply.
Instead, slow down before pulling
back into the t ravel lanes.
• HYUNDAI recommends you follow all
posted speed limits.