HYUNDAI SONATA 2021 Owners Manual

06
6 -7
Key ignition switch positions
Switch
Position Action
Notice
LOCK To turn the ignition switch to the
LOCK position, put the key in at
the ACC position and turn the key
towards the LOCK position.
The ignition key can be removed in
the LOCK position.
(The shift button must be in the P
(Park) position)
ACC Electrical accessories are usable.
The steering wheel unlocks.
ON This is the normal key position when
the engine has started.
All features and accessories are
usable.
The warning lights can be checked
when you turn the ignition switch
from ACC to ON. Do not leave the ignition switch in
the ON position when the engine is
not running in order to prevent the
battery from discharging.
START To start the engine, turn the ignition
switch to the START position. The
switch returns to the ON position
when you let go of the key. The engine will crank until you
release the key.

6-8
Starting the engine
WARNING
Always wear appropriate shoes when
operating your vehicle.
Unsuitable shoes, such as high heels,
ski boots, sandals, flip-flops, etc., may
interfere with your ability to use the
brake and accelerator pedals.
1.
Mak
e sure the parking brake is
applied.
2.

Mak
e sure the gear is in P (Park).
3.

Depr
ess the brake pedal.
4.
T

urn the ignition switch to the START
position. Hold the key (maximum of
10 seconds) until the engine starts and
release it.
Information
• It is best to maintain a moderate engine
speed until the vehicle engine comes
up to normal operating temperature.
Avoid harsh or abrupt acceleration or
deceleration while the engine is still
cold.
• Whether the engine is cold or warm,
always start the vehicle with your foot
on the brake pedal. Do not depress the
accelerator while starting the vehicle.
Do not rev the engine while warming
it up.
NOTICE
To prevent damage to the vehicle:
• Do not hold the ignition key in the
START position for more than 10
seconds. Wait 5 to 10 seconds before
trying again.
• Do not push or tow your vehicle to
start the engine.
Turning off the engine
1. Stop the vehicle and depress the
brake pedal fully.
2.

Shift the gear t
o P (Park).
3.

T
urn the ignition switch to the off
position and apply the parking brake.
While Driving

06
6-9
Engine Start/Stop Button
(if equipped)
ODN8069001
Whenever the front door is opened, the
Engine Start/Stop button will illuminate
and will go off 30 seconds after the door
is closed.
WARNING
To reduce risk of serious injury or death,
NEVER allow children or any person
who is unfamiliar with the vehicle to
touch the Engine Start/Stop button or
related parts. Unexpected and sudden
vehicle movement can occur.
WARNING
To turn the engine off in an emergency:
Press and hold the Engine Start/Stop
button for more than two seconds OR
rapidly press and release the Engine
Start/Stop button three times (within
three seconds).
If the vehicle is still moving, you can
restart the engine without depressing
the brake pedal by pressing the Engine
Start/Stop button with the shift button
in the N (Neutral) position.
WARNING
• NEVER press the Engine Start/Stop
button while the vehicle is in motion
except in an emergency. This will
result in the engine turning off and
loss of power assist for the steering
and brake systems.
This may lead to loss of directional
control and braking function, which
could cause an accident.
• Before leaving the driver's seat,
always make sure the shift button
is in the P (Park) position, set the
parking brake, press the Engine
Start/Stop button to the OFF
position, and take the Smart Key with
you. Unexpected vehicle movement
may occur if these precautions are
not followed.
• NEVER reach through the steering
wheel for the Engine Start/Stop
button or any other control while the
vehicle is in motion. The presence
of your hand or arm in this area
may cause a loss of vehicle control
resulting in an accident.

6-10
Engine Stop/Start button positions
Button
Position Action
Notice
OFF To turn off the engine, press the
Engine Start/Stop button with shift
button in P (Park).
When you press the Engine Start/
Stop button without the shift
button in P (Park), the Engine Start/
Stop button does not turn to the
OFF position, but turns to the ACC
position.
ACC Press the Engine Start/Stop button
when the button is in the OFF
position without depressing the
brake pedal.
Electrical accessories are usable. If you leave the Engine Start/Stop
button in the ACC position for more
than one hour, the battery power will
turn off automatically to prevent the
battery from discharging.
ON Press the Engine Start/Stop button
while it is in the ACC position
without depressing the brake pedal.
The warning lights can be checked
before the engine is started. Do not leave the Engine Start/Stop
button in the ON position when the
engine is not running to prevent the
battery from discharging.
START To start the engine, depress the
brake pedal and press the Engine
Start/Stop button with the shift
button in the P (Park) or in the N
(Neutral) position.
For your safety, start the engine
with the shift button in the P (Park)
position. If you press the Engine Start/Stop
button without depressing the brake
pedal, the engine does not start
and the Engine Start/Stop button
changes as follows:
OFF → ACC → ON → OFF or ACC
However, the engine may start if you
depress the brake pedal within 0.5
second after pressing the Engine
Start/Stop button from the OFF
position.
While Driving

06
6-11
Starting the engine
WARNING
• Always wear appropriate shoes when
operating your vehicle.
Unsuitable shoes, such as high heels,
ski boots, sandals, flip-flops, etc.,
may interfere with your ability to use
the brake and accelerator pedals.
• Do not start the vehicle with the
accelerator pedal depressed. The
vehicle can move and lead to an
accident.
• Wait until the engine rpm is normal.
The vehicle may suddenly move if
the brake pedal is released when the
rpm is high.
Information
• The engine will start by pressing the
Engine Start/Stop button, only when
the smart key is in the vehicle.
• Even if the smart key is in the vehicle,
if it is far away from the driver, the
engine may not start.
• When the Engine Start/Stop button
is in the ACC or ON position, if any
door is open, the system checks for the
smart key. If the smart key is not in the
vehicle, the “
” indicator will blink
and the warning "Key not in vehicle"
will come on and if all doors are closed,
the chime will also sound for about
5 seconds. Keep the smart key in the
vehicle when using the ACC position or
if the vehicle engine is ON.
1. Always carry the smart key with you.
2.

Mak
e sure the parking brake is
applied.
3.

Mak
e sure the gear is in P (Park).
4.
Depr

ess the brake pedal.
5.

Pr
ess the Engine Start/Stop button.
Information
• Do not wait for the engine to warm up
while the vehicle remains stationary.
Start driving at moderate engine
speeds. (Aggressive accelerating and
decelerating should be avoided.)
• Always start the vehicle with your foot
on the brake pedal. Do not depress the
accelerator while starting the vehicle.
Do not rev the engine while warming
it up.
NOTICE
To prevent damage to the vehicle:
• If the engine stalls while you are in
motion, do not attempt to move the
shift button to the P (Park) position.
If traffic and road conditions permit,
you may put the shift button in the N
(Neutral) position while the vehicle
is still moving and press the Engine
Start/Stop button in an attempt to
restart the engine.
• Do not push or tow your vehicle to
start the engine.

6-12
NOTICE
To prevent damage to the vehicle:
When the stop lamp switch fuse is
blown, you can't start the engine
normally. Replace the fuse with a new
one. If you are not able to replace
the fuse, you can start the engine by
pressing and holding the Engine Start/
Stop button for 10 seconds with the
Engine Start/Stop button in the ACC
position.
Do not press the Engine Start/Stop
button for more than 10 seconds except
when the stop lamp switch fuse is
blown.
For your safety always depress the
brake pedal before starting the engine.
ODN8069002
Information
If the smart key battery is weak or the
smart key does not work correctly, you
can start the engine by pressing the Engine
Start/Stop button with the smart key in
the direction of the picture above.
Remote Start
ODN8069003
ODN8069004You can start the vehicle using the
Remote Start button of the smart key.
To start the vehicle remotely:
• Lock the doors by pressing the door
lock button within 32 feet (10 m)
distance from the vehicle.
• Press the remote start button for over
2 seconds within 4 seconds after
locking the doors and the hazard
warning will blink.
To turn off the remote start function,
press the remote start button once.
In case of the manual operation,
the climate control system will be
maintained even when the engine is
turned OFF. However, the automatic
operation is set to 72°F(22°C).
While Driving

6-13
06
ODN8069005
Automatic Transmission Operation
The automatic transmission has eight forward speeds and one reverse speed.
The individual speeds are selected automatically in the D (Drive) position.
WARNING
The automatic transmission shift button or interior parts might get hot when a
vehicle is parked outside during hot weather. Always be careful when the vehicle is
hot.
AUtoMAtic tr A n SM i SS ion

6-14
Transmission ranges
The indicator in the instrument cluster
displays the gear position when the
ignition switch is in the ON position.
WARNING
To reduce the risk of serious injury or
death:
• ALWAYS check the surrounding
areas near your vehicle for people,
especially children, before shifting a
vehicle into D (Drive) or R (Reverse).
• Before leaving the driver’s seat,
always make sure the gear is in
the P (Park) position, then set
the parking brake, and place the
ignition switch in the LOCK/OFF
position. Unexpected and sudden
vehicle movement can occur if these
precautions are not followed.
• If equipped, do not use the engine
brake (shifting from a high gear to
lower gear using the paddle shifters)
rapidly on slippery roads.
P (Park)
Always come to a complete stop before
shifting into P (Park).
To shift from P (Park), you must depress
firmly on the brake pedal and make sure
your foot is off the accelerator pedal.
The gear must be in P (Park) before
turning the engine off.
WARNING
• Shifting into P (Park) while the
vehicle is in motion may cause you to
lose control of the vehicle.
• After the vehicle has stopped, always
make sure the gear is in P (Park),
apply the parking brake, and turn
the engine off.
• Do not use the P (Park) position in
place of the parking brake.
R (Reverse)
Use this position to drive the vehicle
backward.
NOTICE
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
in motion.
When the vehicle is stopped in
R (Reverse) position, if you open
the driver's door with the seat belt
unfastened, the gear is shifted to P (Park)
position automatically.
However when the vehicle moves
in R (Reverse) position, if you open
the driver's door with the seat belt
unfastened, the gear may be not shifted
to P (Park) position automatically for
protecting the automatic transmission.
N (Neutral)
The wheels and transmission are not
engaged.
Use N (Neutral) if you need to restart a
stalled engine, or if it is necessary to stop
with the engine ON. Shift into P (Park)
if you need to leave your vehicle for any
reason.
Always depress the brake pedal when
you are shifting from N (Neutral) to
another gear.
WARNING
Do not shift into gear unless your foot is
firmly on the brake pedal. Shifting into
gear when the engine is running at high
speed can cause the vehicle to move
very rapidly. You could lose control of
the vehicle and hit people or objects.
While Driving

06
6-15
D (Drive)
This is the normal driving position. The
transmission will automatically shift
through a 8-gear sequence, providing
the best fuel economy and power.
To start the vehicle forward, push the D
(Drive) button by depressing the brake
pedal with the engine ON. Then depress
the accelerator pedal smoothly.
For extra power when passing another
vehicle or driving uphill, depress the
accelerator fully. The transmission will
automatically downshift to the next
lower gear (or gears, as appropriate).
When the vehicle is stopped in D (Drive)
position, if you open the driver's door
with the seat belt unfastened, the gear is
shifted to P (Park) position automatically.
However when the vehicle moves in D
(Drive) position, if you open the driver's
door with the seat belt unfastened, the
gear may not shift to P (Park) position
automatically to protect the automatic
transmission.
Shift-lock system
For your safety, the automatic
transmission has a shift-lock system
which prevents shifting the gear from
P (Park) or N (Neutral) to R (Reverse)
or D (Drive) unless the brake pedal is
depressed.
To shift the gear from P (Park) or N
(Neutral) to R (Reverse) or D (Drive):
1.
Depr
ess and hold the brake pedal.
2.

S
tart the engine or place the ignition
switch in the ON position.
3.

Depr
ess the brake pedal and push the
R (Reverse) or D (Drive) button.
Stay in N (Neutral) position when
engine is Off
ODN8069006
ODN8069008If you want to keep the N (Neutral)
position after the engine is OFF, do the
following.
1.

Deactiv
ate the AUTO HOLD and
release the parking brake when the
ignition switch is ON.
2.

S
tart the engine. Push the N (neutral)
button while depressing the brake
pedal. If the message ("Press and
hold OK button to stay in Neutral
when vehicle is OFF") appears on the
cluster LCD display, press and hold
the OK button on the steering wheel
for more than 1 second.
3.

When the message ("V
ehicle will
stay in (N). Change gear to cancel")
appears on the cluster LCD display,
turn off the engine.
In this situation, if you unfasten the
driver's seat belt and open the driver's
door within 3 minutes, the gear stays in
the N (Neutral) position and the ignition
switch is turned off.

6-16
When the battery is discharged:
You cannot shift the gear when the
battery is discharged.
In emergencies, do the following to
move the shift button to N (Neutral) on a
level ground.
1.
Connect the ba
ttery cables from
another vehicle or from a another
battery to the jump-starting terminals
inside the engine compartment.
F

or more information refer to "Jump
Starting" in chapter 7.
2.

R
elease the parking brake with the
Engine Start/Stop button in the ON
position.
3.

Shift the gear t
o the N(Neutral)
position. Refer to the "Stay in Neutral
when vehicle is Off" in this chapter.
Parking
Always come to a complete stop and
continue to depress the brake pedal.
Press the P button, apply the parking
brake, and place the ignition switch in
the LOCK/OFF position. Take the Key
with you when exiting the vehicle.
• The gear is shifted to P (Park) position
automatically for safety under the
following conditions.
- When the driv

er unfastens the seat
belt and opens the driver’s door.
- When the engine is turned o

ff with
the gear shifted to R (Reverse), D
(Drive) or N (Neutral).
WARNING
When you stay in the vehicle with
the engine running, be careful not to
depress the accelerator pedal for a long
period of time. The engine or exhaust
system may overheat and start a fire.
The exhaust gas and the exhaust system
are very hot. Keep away from the
exhaust system components.
Do not stop or park over flammable
materials, such as dry grass, paper or
leaves. They may ignite and cause a fire.
While Driving