2020 Hyundai Sonata trunk release

2-4
Vehicle Information
The actual shape may differ from the illustration.ODN8A019003
1. Inside door handle ................................ 5-32
2. Seat position memory system .............5-39
3. Side view mirror control switch ...........5-54
4. Central door lock switch .......................5-33
5. Power window switches ......................5-56
6. Power window lock button ..................5-59
7. Steering wheel tilt/telescopic lever ....5-43
8. Steering wheel ......................................5-42
9. Instrument panel illumination control
switch
......................................................4-3
10. Idle Stop and Go (ISG) OFF button ......6-33
11. Lane Keeping Assist system button ....6-58
12. Trunk release button ............................5-65
13. ESC OFF button ....................................6-29
14. EPB (Electronic Parking Brake) .............6-21
15. Hood release lever ...............................5-64
INTERIOR OVERVIEW

Seats & Safety System3-10
Rear Seats
Folding the rear seat
The rear seatbacks can be folded to
facilitate carrying long items or to
increase the luggage capacity of the
vehicle.
WARNING
• Never allow passengers to sit on top
of the folded down seatback while
the vehicle is moving. This is not a
proper seating position and no seat
belts are available for use. This could
result in serious injury or death in
case of an accident or sudden stop.
• Objects carried on the folded down
seatback should not extend higher
than the top of the front seatbacks.
This could allow cargo to slide
forward and cause injury or damage
during sudden stops.
To fold down the rear seatback:
1. Set the front seatback to the upright position and if necessary, slide the
front seat forward.
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2. Lower the rear head restraints to the lowest position by pushing and
holding the release button and
pushing down on the head restraint.
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3. Pull on the seatback folding lever located in the trunk.
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4. Fold the seatback toward the front of the vehicle.
5. To use the rear seat, lift and pull the seatback rearward. Pull the seatback
firmly until it clicks into place. Make
sure the seatback is locked in place.

5. Convenient Features
Accessing Your Vehicle ........................................................................\
.......... 5-4Remote Key ........................................................................\
...................................... 5-4
Smart Key ........................................................................\
..........................................5-7
Immobilizer System ........................................................................\
........................ 5-14
Hyundai Digital Key ........................................................................\
......................... 5-15
Door Locks ........................................................................\
............................. 5-31Operating Door Locks from Outside the Vehicle .................................................. 5-31
Operating Door Locks from Inside the Vehicle .................................................... 5-32
Automatic Door Lock and Unlock Features .......................................................... 5-34
Child-Protector Rear Door Locks ........................................................................\
.. 5-35
Rear Occupant Alert (ROA) System ....................................................................... 5-36
Theft-Alarm System ........................................................................\
............. 5-38
Driver Position Memory System ................................................................. 5-39
Storing Positions into Memory ........................................................................\
..... 5-39
Recalling Positions from Memory ........................................................................\
.5-40
Resetting the Driver’s Seat Memory System ........................................................5-40
Easy Access Function ........................................................................\
......................5-41
Steering Wheel ........................................................................\
..................... 5-42Electric Power Steering (EPS) ........................................................................\
........ 5-42
Tilt Steering / Telescope Steering ........................................................................\
. 5-43
Heated Steering Wheel ........................................................................\
.................. 5-44
Horn........................................................................\
................................................. 5-45
Mirrors ......................................................................\
....................................5-46Inside Rearview Mirror ........................................................................\
................... 5-46
Side View Mirrors ........................................................................\
........................... 5-53
Reverse Parking Aid Function ........................................................................\
........ 5-55
Windows ......................................................................\
................................. 5-56Power Windows ........................................................................\
.............................. 5-57
Panoramic Sunroof ........................................................................\
..............5-60Sunshade ...............................................................\
..................................................5-61
Sliding the Sunroof ........................................................................\
..........................5-61
Tilting the Sunroof ........................................................................\
..........................5-61
Closing the Sunroof ........................................................................\
....................... 5-62
Resetting the Sunroof ........................................................................\
.................... 5-63
Sunroof Open Warning ........................................................................\
.................. 5-63
Exterior Features ........................................................................\
..................5-64Hood ....................................................................\
.................................................... 5-64
Trunk ...................................................................\
..................................................... 5 -65
Emergency Trunk Safety Release ........................................................................\
.. 5-66
Fuel Filler Door ........................................................................\
............................... 5-70
5

05
5-5
Trunk unlocking
To unlock the trunk :
1. Press and hold the Trunk Unlock button (3) on the remote key for more
than one second.
2. The hazard warning lights will blink two times and the trunk will be
unlocked.
3. Once the trunk is opened and then closed, the trunk will automatically
re-lock after 30 seconds.
Information
The word “HOLD” is written on the
button to inform you that you must press
and hold the button for more than one
second.
Panic button (4)
Press and hold the Panic button (4) for
more than one second. The horn sounds
and hazard warning lights flash for about
30 seconds.
To cancel the panic mode, press any
button on the remote key.
Start-up
For information, refer to the “Key
Ignition Switch” section in chapter 6.
NOTICE
To prevent damaging the remote key:
• Keep the remote key away from
water or any liquid and fire. Internal
circuits may malfunction if the inside
of the remote key gets damp (from
liquids or moisture) or if it is heated.
This can exclude the remote key from
being covered under warranty.
• Avoid dropping or throwing the
remote key.
• Protect the remote key from extreme
temperatures.
Mechanical key
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If the remote key does not operate
normally, you can lock or unlock the
driver’s door by using the mechanical
key.
To unfold the mechanical key, press the
release button on the remote.
To return the key to its stored position,
press the release button and fold the key
back into the remote.
Remote key precautions
The remote key will not work if any of the
following occur:
• The key is in the ignition switch.
• You exceed the operating distance
limit (about 90 feet [30 m]).
• The remote key battery is weak.
• Other vehicles or objects may be blocking the signal.
• The weather is extremely cold.
• The remote key is close to a radio transmitter such as a radio station or
an airport which can interfere with
normal operation of the remote key.
If the remote key does not work
correctly, open and close the door
with the mechanical key. If you have a
problem with the remote key contact an
authorized HYUNDAI dealer.

05
5-65
Trunk
Opening the trunk
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1. Make sure the shift button is in P (Park).
2. Then do one of the following :
- Press the button on the trunk handle after locking or unlocking the door
by remote key or smart key.
- Press the trunk unlock button of remote key or smart key for more
than 1 second.
- Press the button on the trunk itself with the Smart Key in your
possession.
WARNING
The button on the trunk handle is
made of the rubber. Do not press it
with the sharp objects such as the key,
screwdriver or drill.
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- Use the trunk release button.
3. Lift the trunk lid up.
Closing the trunk
Lower the trunk lid and press down until
it locks.
WARNING
Always keep the trunk lid completely
closed while the vehicle is in motion. If
it is left open or ajar, poisonous exhaust
gases containing carbon monoxide
(CO) may enter the vehicle and serious
illness or death may result.
WARNING
Make sure there are no people or
objects around the trunk before
opening or closing the Power Trunk.
Wait until the trunk is open fully and
stopped before loading or unloading
cargo from the vehicle.
NOTICE
To prevent damage to the trunk lift
cylinders and the attached hardware,
always close the trunk before driving.
Information
In cold and wet climates, trunk lock and
trunk mechanisms may not work properly
due to freezing conditions.
WARNING
Always be careful to open and close the
trunk.
• To prevent serious injury and
damage, you should check and keep
your body parts such as hands or
head away from the path of the trunk
while closing or opening the trunk.
• Your body parts or an object might be
damaged by sharp edges so you should
be careful while opening/closing the
trunk or taking the thing out from the
trunk. Especially, a child can hit the face
or head around the trunk so you should
be cautious all the time.

Convenient Features5-66
Emergency Trunk Safety Release
Inside the trunk
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Your vehicle is equipped with an
Emergency Trunk Safety Release lever
located inside the trunk. When someone
is inadvertently locked in the trunk, the
trunk can be opened by moving the lever
in the direction of the arrow and pushing
the trunk open.
WARNING
• You and your passengers must be aware of the location of the
Emergency Trunk Safety Release
lever in this vehicle and how to open
the trunk in case you are accidentally
locked in the trunk.
• NEVER allow anyone to occupy the trunk of the vehicle at any time. If the
trunk is partially or totally latched
and the person is unable to get out,
serious injury or death could occur
due to lack of ventilation, exhaust
fumes and rapid heat build-up, or
because of exposure to cold weather
conditions. The trunk is also a highly
dangerous location in the event of a
crash because it is not a protected
occupant space but is a part of the
vehicle’s crush zone.
• Your vehicle should be kept locked and the Smart Key should be kept
out of the reach of children. Parents
should teach their children about the
dangers of playing in trunks. • Use the release lever for emergencies
only.
Inside the vehicle
When you can not unlock the trunk due
to battery discharge or other reasons,
you can unlock the trunk inside the
vehicle.
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Open the cable cover(1) under the rear
seat with a mechanical key and pull the
cable (2) for unlocking the trunk.
The cable is firmly fixed so it may hard to
pull. Therefore, please use a tool such as
a screwdriver to assist in pulling the loop
for the emergency release.
Smart Trunk with Auto Open
(if equipped)
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On a vehicle equipped with a smart key,
the trunk can be opened using the Smart
Trunk with Auto Open system.

Convenient Features5-90
Operating conditions
Reverse Parking Collision-Avoidance
Assist system enters the ready status,
when ‘Active Assist’ or ‘Warning Only’ is
selected in the AVN system screen and
the following conditions are satisfied:
• The trunk is closed
• The shift lever is in R (Reverse)
• Vehicle speed is below 6 mph (10 km/h)
• System components such as the rear view camera and the rear ultrasonic
sensors are in normal conditions
The driver needs to select ‘Active Assist’
on the LCD display or infotainment
system display for collision-avoidance
assist.
The solid lines behind the vehicle in the
cluster LCD display indicates that the
system is ready to assist the driver.
Note that the system assists the driver
only once. The driver has to shift the gear
to R (Reverse) from another gear position
to reactivate the system.
The performance of Reverse Parking
Collision-Avoidance Assist system may
vary under certain conditions. If the
vehicle speed exceeds 2 mph (3 km/h),
the system can assist only pedestrian
collision avoidance.
As always, be careful when backing
up your vehicle and be aware of your
surroundings.
Warning and System Control
Active assist
Cluster LCD displayCluster LCD display
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Infotainment system display Infotainment system display
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• If the system detects a risk of collision with a pedestrian or an object behind
the vehicle, the system will warn the
driver with audible warning, steering
wheel vibration, and warnings on
the cluster LCD display and the
infotainment system display.
• If the system detects imminent collision with a pedestrian or an object
behind the vehicle, the system may
apply braking power. The driver needs
to pay attention as the brake will
release within 2 seconds. The driver
must immediately depress the brake
pedal and check surroundings.

Convenient Features5-112
The Remote Moving Forward/
Backward assist will stop
temporarily when:
7. An obstacle is detected at the direction the vehicle is heading.
8. The door or trunk is opened.
9. The moving forward/backward button on the smart key is released.
10. Multiple buttons on the smart key are pressed at the same time.
11. The distance between the smart key and vehicle is over 13 ft. (4 m).
12. A button on the other smart key is pressed during operation.
13. Rear Cross-Traffic Collision-Avoidance Assist system is activated while
reserving.
14. The vehicle moves 23 ft. (7 m) with the Remote Moving Forward/Backward
while the smart key is pressed.
(Maximum travel distance per move)

 The vehicle stops when the Remote
Smart Parking Assist system will stop
temporarily and the function will
resume when the above condition is
cleared.
The Remote Moving Forward/
Backward assist is cancelled while
in operation when:
1. The driver holds the steering wheel
while the steering wheel is controlled.
2. The gear is shifted or the Electronic Parking Brake (EPB) is activated.
3. The hood opens.
4. The vehicle speed exceeds 3 mph (5km/h).
5. The vehicle accelerates suddenly.
6. The vehicle slips back while controlling the vehicle speed.
7. The wheel is stuck and the vehicle is unable to move.
8. About 3 minutes and 50 seconds have passed after the Remote Moving
Forward/Backward assist starts. 9. The gradient of the road exceeds
the range supported by the Remote
Moving Forward/Backward assist.
10. The steering, shifting gear and drive assist are difficult.
11. The suspended status lasts for over 1 minute.
12. The driver continuously presses and releases the smart key’s moving
forward/backward button over 10
times.
13. The Traction Control System (TCS) is activated while controlling the vehicle
speed.
14. The smart key is damaged.
15. The accelerator/brake pedal is depressed while all the doors are
closed.
16. The brake pedal is depressed while the driver’s door is open and the smart
key is outside the vehicle.
17. The vehicle travels more than 46 ft. (14 m) after the Remote Moving Forward/
Backward assist is activated.
18. The theft alarm system is activated.

 When the Remote Moving Forward/
Backward is completed, the gear in
P(Park) and Electronic Parking Brake
(EPB) are engaged automatically and
the vehicle turns off.

 The frequent beep sounds are
generated to show the deactivation
status.