brakes HYUNDAI SONATA HYBRID 2019 Owners Manual

F9
Introduction
Fuel Additives
HYUNDAI recommends that you use good quality gasolines treated with
detergent additives such as TOP TIER
Detergent Gasoline, which help pre-
vent 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, addi-
tives that you can buy separately
may be added to the gasoline. If TOP
TIER Detergent Gasoline is not avail-
able, one bottle of additive added to
the fuel tank at every 12,000 km(7,500 miles) or 12 months is recom-mended.
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. No special break-in period is needed.
By following a few simple precautions
for the first 1,000 km (600 miles) you
may add to the performance, econo-
my 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 need-
ed to properly break-in the engine.
Avoid hard stops, except in emer- gencies, to allow the brakes to seat
properly.
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Refuel to prevent Hybrid battery
damage
This warning message is displayed
when the fuel tank is nearly empty.
You should refill the fuel tank to pre-
vent hybrid battery damage.
Refill inverter coolant
This warning message is displayed
when the inverter coolant is nearly
empty.
You should refill the inverter coolant.
Stop vehicle and check regen.brakes
This warning message is displayed
when a failure occurs in the brakesystem.
In this case, park the vehicle in a safe
location and tow your vehicle to the
nearest authorized HYUNDAI dealer
and have the vehicle inspected.
■ Type A■ Type B
OLFH047763L/OLFH047242L
■ Type A■ Type B
OLFH047764L/OLFH047244L
■ Type A■ Type B
OLFH047765L/OLFH047234L

H31
Check regenerative brakes
This warning message is displayed
when the brake performance is low
or the regenerative brake does not
work properly due to a failure in the
brake system.
In this case, it may take longer for the
brake pedal to operate and the brak-
ing distance may become longer.
Check Virtual Engine SoundSystem
This message is displayed when
there is a problem with the VirtualEngine Sound System (VESS).
In this case, have your vehicle
inspected by an authorized HYUNDAI
dealer.
Coasting guide (if equipped)
A chime will sound and the coasting
guide indicator will blink four times to
inform the driver when to take the
foot off from the accelerator by antic-
ipating a decelerating event* based
on the analysis of driving routes and
road conditions of the navigation. It
encourages the driver to remove foot
from the pedal and allow coasting
down the road with EV motor only.
This helps prevent unnecessary fuelconsumption and increases fuel effi-ciency
OLFH045254N
■ Type A■ Type B
OLFH047766L/OLFH047250L
■ Type A■ Type B
OLFH047767L/OLFH047543L

3-63
Convenient features of your vehicle
3
Parking Brake & BrakeFluid Warning Light
This warning light illuminates:
When the Engine Start/Stop button is in the ON position
- It illuminates for approximately 3seconds and then goes off.
- It remains on if the parking brake is applied.
When the parking brake is applied.
When the brake fluid level in the reservoir is low.
- If the warning light illuminateswith the parking brake released, it
indicates the brake fluid level in
reservoir is low.
When the regenerative brake does not operate.
When only one of the dual system is working, the stopping distancewill be increased.
If the brake fluid level in the reser-
voir is low:
1. Drive carefully to the nearest safe location and stop your vehicle.
2. Stop the vehicle, immediately check the brake fluid level and add
fluid, if necessary (For more
information, refer to "Brake
Fluid" in the chapter 7). 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 author-
ized HYUNDAI dealer.
Dual-diagonal braking system
Your vehicle is equipped with dual-
diagonal braking systems. This
means you still have braking on two
wheels even if one of the dual sys-
tems fails. With only one of the dual systems
working, longer pedal travel and
greater pedal pressure is required. If the brakes fail, while driving, shift
to a lower gear for additional engine
braking and stop the vehicle as soon
as it is safe to do so.
(red color)
Driving the vehicle with a warn-
ing light ON is dangerous. If the
Parking Brake & Brake Fluid
Warning Light illuminates with
the parking brake released, itindicates that the brake fluid
level is low.
In this case, have the vehicle
inspected by an authorized
HYUNDAI dealer.
WARNING

3-64
Convenient features of your vehicle
Regenerative BrakeWarning Light
This warning light illuminates :
When the regenerative brake does
not operate and the brake does not
perform well. This causes the Brake
Warning light (red) and Regenerative
Brake Warning Light (yellow) to illu-
minate simultaneously.
In this case, drive safely and have
your vehicle inspected by an author-
ized HYUNDAI dealer.
Anti-lock Brake System(ABS) Warning Light
This warning light illuminates in
one of the following situations:
When the Engine Start/Stop button is in the ON position.
- It illuminates for approximately 3seconds and then goes off.
When there is a malfunction with the ABS (The normal braking sys-
tem is still operational without the
assistance of the anti-lock brakesystem).
In this case, have the vehicle
inspected by an authorized
HYUNDAI dealer.
Electronic Brake force
Distribution (EBD)
System Warning Light
These two warning lights illuminate
at the same time while driving:
When the ABS and regular brake
system may not work normally.
In this case, have your vehicle
inspected by an authorized
HYUNDAI dealer.
(yellow color)
(red color)
The operation of the brake
pedal may be more difficult thannormal and the braking dis-
tance can increase.
WARNING

3-74
Convenient features of your vehicle
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, have your vehicle
inspected by an authorized
HYUNDAI dealer.
For more information, refer to "Tire Pressure Monitoring System
(TPMS)" in chapter 6.
Lane Keeping AssistSystem (LKAS)
Indicator Light(if equipped)
This indicator light illuminates:
[Green] When the system operat- ing conditions are satisfied.
[White] The system operating con- ditions are not satisfied.
[Yellow] When there is a malfunc- tion with the lane keeping assist system.
In this case, have your vehicle
inspected by an authorized
HYUNDAI dealer.
For more details, refer to "Lane
Keeping Assist System (LKAS)" in
chapter 5.
The TPMS cannot alert you to
severe and sudden tire damage
caused by external factors.
If you notice any vehicle insta-
bility, 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.
WARNING

3-81
Convenient features of your vehicle
3
Refuel to prevent Hybrid batterydamage
This warning message is displayed
when the fuel tank is nearly empty.
You should refill the fuel tank to pre-
vent hybrid battery damage.
Refill inverter coolant
This warning message is displayed
when the inverter coolant is nearly
empty.
You should refill the inverter coolant.
Stop vehicle and check regen.
brakes
This warning message is displayed
when a failure occurs in the brakesystem.
In this case, park the vehicle in a safe
location and tow your vehicle to the
nearest authorized HYUNDAI dealer
and have the vehicle inspected.
Check regenerative brakes
This warning message is displayed
when the brake performance is low
or the regenerative brake does not
work properly due to a failure in the
brake system.
In this case, it may take longer for the
brake pedal to operate and the brak-
ing distance may become longer.
Check Virtual Engine SoundSystem
This message is displayed when
there is a problem with the VirtualEngine Sound System (VESS).
In this case, have your vehicle
inspected by an authorized HYUNDAI
dealer.
Coasting guide (if equipped)
A chime will sound and the coasting
guide indicator will blink four times to
inform the driver when to take the
foot off from the accelerator by antic-
ipating a decelerating event* based
on the analysis of driving routes and
road conditions of the navigation. It
encourages the driver to remove foot
from the pedal and allow coasting
down the road with EV motor only.
This helps prevent unnecessary fuelconsumption and increases fuel effi-
ciency.

3-116
Convenient features of your vehicle
Non-operational conditions ofParking Assist System
The Rear Parking Assist System
may not operate normally when:
Moisture is frozen to the sensor.
The sensor is covered with dirt or debris such as snow or ice, or the
sensor cover is blocked.
There is a possibility of the Rear
Parking Assist System malfunction
when:
Driving on uneven road surfacessuch 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 sen-
sor.
Heavy rain or water spray is pres- ent.
Wireless transmitters or mobile phones are present near the sen-
sor.
The sensor is covered with snow.
Any non-factory equipment or accessories have been installed,
or if the vehicle bumper height orsensor installation has been modi-fied.
Detecting range may decrease
when:
Outside air temperature isextremely hot or cold.
Undetectable objects smaller than 1 m (40 inches) and narrower than
14 cm (6 inches) in diameter.
The following objects may not be
recognized by the sensor:
Sharp or slim objects such asropes, chains or small poles.
Objects, which tend to absorb sen- sor frequency such as clothes,
spongy material or snow.

Driving your vehicle
Before driving.........................................................5-4Before entering the vehicle ...........................................5-4
Before starting...................................................................5-4
Engine start/stop button ......................................5-5 Illuminated Engine Start/Stop button ..........................5-6
Engine Stop/Start button positions ..............................5-7
Starting the hybrid system .............................................5-9
Automatic transmission .......................................5-12 Automatic transmission operation ..............................5-12
Parking ...............................................................................5-17
Good driving practices ...................................................5-17
Braking system.....................................................5-19 Power brakes ...................................................................5-19
Disc brakes wear indicator ...........................................5-20
Foot parking brake .........................................................5-20
Electronic Parking Brake (EPB)...................................5-22
AUTO HOLD ......................................................................5-28
Anti-lock Brake System (ABS) ....................................5-32
Electronic Stability Control (ESC)................................5-34
Vehicle Stability Management (VSM).........................5-38
Hill-Start Assist Control (HAC) ....................................5-39
Good braking practices..................................................5-40 Drive mode integrated control system .............5-41
Hybrid vehicle ..................................................................5-41
Plug-in hybrid vehicle....................................................5-43
Blind Spot Detection system (BSD) ..................5-45 BSD (Blind Spot Detection) /
LCA (Lane Change Assist) .............................................5-46RCTA (Rear Cross Traffic Alert) ..................................5-49
Limitations of the system .............................................5-52
Lane Keeping Assist System (LKAS) .................5-53 LKAS operation ................................................................5-54
LKAS malfunction............................................................5-58
LKAS function change ...................................................5-60
Limitations of the System .............................................5-61
Driver Attention Alert system (DAA) ................5-62 System setting and activation......................................5-62
Resetting the system .....................................................5-64
System standby ...............................................................5-64
System malfunction ........................................................5-64
Automatic Emergency Braking (AEB) ...............5-67 System setting and activation......................................5-67
AEB warning message and system control ..............5-69
AEB front radar sensor .................................................5-72
System malfunction ........................................................5-73
Limitations of the system .............................................5-75
5

5-14
Driving your vehicle
R (Reverse)
Use this position to drive the vehicle
backward.
Always come to a complete stop
before shifting into or out of R
(Reverse); you may damage the
transmission if you shift into R
(Reverse) while the vehicle is inmotion.
N (Neutral)
The wheels and transmission are not
engaged. The vehicle will roll freely
even on the slightest incline unless
the parking brake or service brakesare applied.
D (Drive)
This is the normal driving position.
The transmission will automatically
shift through a 6-gear sequence, pro-
viding the best fuel economy and
power.
For extra power when passing anoth-
er vehicle or driving uphill, depress
the accelerator fully. The transmis-
sion will automatically downshift to
the next lower gear (or gears, as
appropriate).
The DRIVE MODE switch, located
on the shift lever console, allows the
driver to switch from NORMAL mode
to SPORT or ECO mode.
For more information, refer to
"Drive Mode Integrated Control
System" later in this chapter.
NOTICE