Service Hyundai Sonata 2020 User Guide

04
4-45
8. Other
ItemsExplanation
Fuel Econ. Reset • Off: The a
verage fuel economy will not reset automatically
whenever refueling.
• After ignition: When the engine has been OFF for 4 hours or longer
the average fuel economy will reset automatically.
• After refueling: The average fuel economy will reset automatically
after adding 1.6 gallons (6 liters) of fuel or more and after driving
speed exceeds 1 mph (1 km/h).
For more information, refer to “Trip Computer” in this chapter.
Fuel Econ. Unit To select the fuel economy unit.
Temperature Unit To select the temperature unit. (°C,°F)
Tire Pressure Unit To select the tire pressure unit. (psi, kPa, bar)
9. Language (if equipped)
Items
Explanation
Language Choose the language. Y
ou can choose the language in infotainment
system. (if equipped)
10. Reset
Items Explanation
Reset Y
ou can reset the menus in the User Settings Mode. All menus in the
User Settings Mode are reset to factory settings, except language
and service interval.

Convenient Features5-14
Immobilizer System
The immobilizer system protects your
vehicle from theft. If an improperly
coded key (or other device) is used, the
engine’s fuel system is disabled.
When the ignition switch is placed in
the ON position, the immobilizer system
indicator should come on briefly, then
go off. If the indicator starts to blink, the
system does not recognize the coding of
the key.
Turn the ignition switch to the LOCK/OFF
position, then turn the ignition switch to
the ON position again.
In some circumstances, the vehicle may
not recognize your smart key if another
smart key device is nearby or a metal
object such as a key chain is causing
interference with the smart key.
If this occurs, your vehicle may not
start. Remove any metal objects or
additional keys near the smart key before
attempting to start the vehicle again.
If the system repeatedly does not
recognize the coding of the key, it is
recommended that you contact your
HYUNDAI dealer.
Do not attempt to alter this system
or add other devices to it. Electrical
problems could result that may make
your vehicle inoperable. WARNING
In order to prevent theft of your
vehicle, do not leave spare keys
anywhere in your vehicle. Your
immobilizer password is a customer
unique password and should be kept
confidential.
NOTICE
The transponder in your key is an
important part of the immobilizer
system. It is designed to give years
of trouble-free service, however you
should avoid exposure to moisture,
static electricity and rough handling.
Immobilizer system malfunction could
occur.
Information
This device complies with Part 15 of the
FCC rules.
Operation is subject to the following three
conditions:
1. This device may not cause harmful
interference.
2. This device must accept any
interference received, including
interference that may cause undesired
operation.
3. Changes or modifications not expressly
approved by the party responsible
for compliance could void the user’s
authority to operate the device

05
5-15
Hyundai Digital Key
Digital Key Application
To use Hyundai Digital Key mobile app,
you should install Hyundai digital key
application. Search ‘Hyundai digital key’
in the Google Play Store and download
the app. Please refer to the detailed
manual of the digital key app. The option
can be found under the following app
menu:
Menu → Application Info → Tutorial
Please note the manual before using the
app.
 This service is only available for
Android smartphones. Please confirm
supported/compatible devices on our
website.
WARNING
For used vehicle
If any of the digital key (smartphone key
or card key) is already registered when
you press ON button after unlocking the
doors, the message ‘Digital key(s) active’
appears on the instrument cluster once.
If you buy a used vehicle, you should
confirm the message and delete the
registered smartphone key and card key.
In addition, please notify the Hyundai
Customer Care Center.
If the card key does not work properly,
please delete the card key and register
the smartphone key and re-register the
card key.
For vehicle maintenance
If you need to have your Digital Key
System repaired or replaced please
ensure you Smartphone Key is still active.
You may have to pair your phone again.
In the case, re-initialize your Digital Keys
using the Hyundai Digital Key mobile app.
Digital key (smartphone) NFC
function
You can use the Digital Key NFC (Near
Field Communication) function after turn
your smartphone NFC settings on. And
you should unlock & turn on smartphone
screen to use it.

 To change the NFC mode of the
smartphone, please refer to the
smartphone manual or contact
to the customer service center of
smartphone manufacturers.

05
5-21
Remote Start with Digital Key
• When the shift button of your vehicle is in P (Park) and all of the doors
including trunk and hood is locked
and the vehicle is off, press the Door
Lock button in the Hyundai Digital
Key app then press the Remote Start
button within 4 seconds.
You can confirm the engine is on if the
hazard warning lights blinks two times
and the chime sounds.
• If you want to turn off the engine, press Remote Engine Stop. Air
Conditioner / Heating system
maintains the same status as when
you last used the vehicle.
• Unless you put the registered digital key(smartphone) on the interior
authentication pad (wireless charger)
when the remote start function is on,
the engine will turn off.
• If you do not get on the vehicle within 10 minutes after the engine turns on,
the vehicle will turn off.
For more information, refer to the Engine
Start/Stop button in chapter 6.
Vehicle information Display
The digital key application displays
the vehicle information such as
driving or door conditions through the
communication with the vehicle.
• How to check : Select the vehicle what you want to check and touch
the vehicle image, then vehicle
information display page will be
shown.
• Contents : accumulated odometer, latest fuel economy, driving range,
fuel remaining, tire pressure, doors
lock/unlock status and last data
updated time.

 Displayed vehicle date could be
differed from the current vehicle
condition.

 For more information, please refer to
the ‘Tutorial’ on your Digital key app. Smartphone change/App deletion
If you change your smartphone or delete
the Hyundai Digital K

ey App, please refer
to the following to set up your Digital
Key:
Smartphone Change/ Reset
If you change or reset the smartphone,
the registered digital key in your previous
smartphone may not be used. Please
refer to following procedure to use the
digital key.
1. Install the digital key application and log in.
2. If you are the owner, retry the Digital key save process.
3. If you are the sharer, need to re-share the key from owner.
App delete & reinstall/ Delete App data
You can re-download the digital key
from server in these cases as follow
procedure.
1. Reinstall the application and log in.
2. Input the PIN number for user verification.
3. If PIN is correct, digital key data will be re-downloaded to your
smartphone and you can use it
without any further registration or
sharing.
Smartphone operability with Digital Key
The digital key application may not
be available to old type smartphones.
Please check the available smartphone
models with your dealer. NFC antenna
position on the smartphone can be
confirmed on each smartphone’s manual
or contact to customer service center of
the smartphone manufacture.

05
5-23

 If you change the smartphone
number, you should modify the user
account information on the HYUNDAI
customer web site to use the digital
key app.

 If the vehicle owner changes
the smartphone device, the new
smartphone should be registered in
the car after deleting the registered
digital key(smartphone).

 If a sharer changes or reset the
smartphone, the key should be re-
shared from owner.

 Some of the old smartphone may
not work properly. Please check the
available smartphone models with
your dealer.

 NFC antenna position on the
smartphone can be confirmed
on each smartphone’s manual or
contact to customer service center
of the smartphone manufacture. Digital key (Card key)
ODN8A059243ODN8A059243
ODN8A059131ODN8A059131
Digital key (Card key) save
1. Install Hyundai digital key app in
main user’
s smartphone and register
the digital key (smartphone). Please
refer to the registration method of the
digital key (smartphone).
2. Using the [Pair Card Key] menu on the digital key application, you can
activate the Card Key registration
mode.

 NFC authentication : enter the NFC
authentication menu and contact
the smartphone on the outside door
handle.

 Bluetooth authentication : enter the
Bluetooth authentication menu and
press the [OK] button for activation.
If you activate the registration mode,
you should complete the Card saving
process with in 5 minutes.

Convenient Features5-126
NOTICE
It is important that the correct type and
amount of oil and refrigerant is used.
Otherwise, damage to the compressor
and abnormal system operation may
occur. To prevent damage, the air
conditioning system in your vehicle
should only be serviced by trained and
certified technicians.
WARNING
Vehicles equipped with R-1234yf
Since the refrigerant is
mildly flammable and
operated at high pressure,
the air conditioning system
should only be serviced
by trained and certified
technicians. It is important
that the correct type
and amount of oil and
refrigerant are used.
All refrigerants should be reclaimed
with proper equipment.
Venting refrigerants directly to the
atmosphere is harmful to individuals
and environment. Failure to heed these
warnings can lead to serious injuries.
ODN8A079026ODN8A079026
Air conditioning refrigerant label
You can find out which air conditioning
r
efrigerant is applied to your vehicle on
the label located inside of the hood.
ExampleExample
OHYK059001OHYK059001
Each symbols and specification on
the air conditioning refrigerant label is
represented as below:
1. Classification of refrigerant
2. Amount of refrigerant
3. Classification of Compressor lubricant
4. Caution
5. Flammable refrigerant
6. To require registered technician to service air conditioning system

05
5-137
Checking the amount of air
conditioner refrigerant and
compressor lubricant
When the amount of refrigerant is low,
the performance of the air conditioning
is reduced. Overfilling also reduces the
performance of the air conditioning
system.
Therefore, if abnormal operation is
found, have the system inspected by an
authorized HYUNDAI dealer.
NOTICE
It is important that the correct type and
amount of oil and refrigerant is used.
Otherwise, damage to the compressor
and abnormal system operation may
occur. To prevent damage, the air
conditioning system in your vehicle
should only be serviced by trained and
certified technicians.
WARNING
Vehicles equipped with R-1234yf
Since the refrigerant is
mildly flammable and
operated at high pressure,
the air conditioning system
should only be serviced
by trained and certified
technicians. It is important
that the correct type
and amount of oil and
refrigerant are used.
All refrigerants should be reclaimed
with proper equipment.
Venting refrigerants directly to the
atmosphere is harmful to individuals
and environment. Failure to heed these
warnings can lead to serious injuries.
ODN8A079026ODN8A079026
Air conditioning refrigerant label
You can find out which air conditioning
r
efrigerant is applied to your vehicle on
the label located inside of the hood.
ExampleExample
OHYK059001OHYK059001
Each symbols and specification on
the air conditioning refrigerant label is
represented as below:
1. Classification of refrigerant
2. Amount of refrigerant
3. Classification of Compressor lubricant
4. Caution
5. Flammable refrigerant
6. To require registered technician to service air conditioning system

While Driving6-108
CAUTION
Navigation-based Cruise Control
system may not function properly in the
following situations:
• The navigation is not working
properly.
• The navigation is not updated.
• The real-time GPS or map
information provided has errors.
• The navigation is overloaded by
performing functions such as route
search, video playback, voice
recognition, etc. are performing
simultaneously.
• GPS signals are blocked in areas such
as a tunnel.
• The driver goes off course or the
route to the destination is changed
or canceled by resetting the
navigation.
• The vehicle enters a service station
or rest area.
• A section of the highway’s shape has
changed.
• Android Auto or Car Play is operating.
• The navigation cannot detect the
current vehicle position (ex: elevated
roads including overpass adjacent to
general roads or nearby roads exist
in a parallel way).
• The navigation is being updated
while driving.
• The navigation is being reset while
driving.
• The road is slippery due to bad
weather such as rain or snow.
Information
This device complies with Part 15 of the
FCC rules.
Operation is subject to the following three
conditions:
1. This device may not cause harmful
interference, and
2. This device must accept any
interference received, including
interference that may cause undesired
operation.
3. Changes or modifications not expressly
approved by the party responsible
for compliance could void the user's
authority to operate the device.
Information
Radio frequency radiation exposure
information:
This equipment complies with FCC
radiation exposure limits set forth for an
uncontrolled environment.
This equipment should be installed and
operated with minimum distance of 8 in.
(20 cm) between the radiator (antenna)
and your body.
This transmitter must not be co-located or
operating in conjunction with any other
antenna or transmitter.

While Driving6-120
CAUTION
Highway Driving Assist system may
not function properly in the following
situations:
• The navigation is not working
properly.
• The navigation is not updated.
• The real-time GPS or map
information provided has errors.
• The navigation is overloaded by
performing functions such as route
search, video playback, voice
recognition, etc. are performing
simultaneously.
• GPS signals are blocked in areas such
as a tunnel.
• The driver goes off course or the
route to the destination is changed
or canceled by resetting the
navigation.
• The vehicle enters a service station
or rest area
• Android Auto or Car Play is operating.
• The navigation cannot detect the
current vehicle position (ex: elevated
roads including overpass adjacent to
general roads or nearby roads exist
in a parallel way).
• The navigation is being updated
while driving.
• The navigation is being reset while
driving.
• The road is slippery due to bad
weather such as rain or snow.
Information
• For information's on vehicle to vehicle
distance control and the front radar,
refer to "Smart Cruise Control (SCC)"
in this chapter.
• For information's on steering control
and distance control and the front
camera, refer to "Lane Following Assist
(LFA)" in this chapter.
Information
This device complies with Part 15 of the
FCC rules.
Operation is subject to the following three
conditions:
1. This device may not cause harmful
interference, and
2. This device must accept any
interference received, including
interference that may cause undesired
operation.
3. Changes or modifications not expressly
approved by the party responsible
for compliance could void the user's
authority to operate the device.
Information
Radio frequency radiation exposure
information:
This equipment complies with FCC
radiation exposure limits set forth for an
uncontrolled environment.
This equipment should be installed and
operated with minimum distance of 8 in.
(20 cm) between the radiator (antenna)
and your body.
This transmitter must not be co-located or
operating in conjunction with any other
antenna or transmitter.

While Driving6-138
Change to "winter weight" oil if
necessary
In some climates it is recommended that
a lower viscosity "winter weight" oil be
used during cold weather. See chapter 8
for recommendations. If you aren't sure
what weight oil you should use, consult
an authorized HYUNDAI dealer.
Check battery and cables
Winter puts additional burdens on the
battery system. Visually inspect the
battery and cables as described in
chapter 8. The level of charge in your
battery can be checked by an authorized
HYUNDAI dealer or a service station.
Check spark plugs and ignition
system
Inspect your spark plugs as described in
chapter 8 and replace them if necessary.
Also check all ignition wiring and
components to be sure they are not
cracked, worn or damaged in any way.
Use approved window washer anti-
freeze in system
To keep the water in the window washer
system from freezing, add an approved
window washer anti-freeze solution in
accordance with instructions on the
container. Window washer anti-freeze is
available from an authorized HYUNDAI
dealer and most auto parts outlets. Do
not use engine coolant or other types
of antifreeze as these may damage the
paint finish.
Do not let your parking brake freeze
Under some conditions your parking
brake can freeze in the engaged position.
This is most likely to happen when
there is an accumulation of snow or
ice around or near the rear brakes or
if the brakes are wet. If there is a risk
the parking brake may freeze, apply
it only temporarily while you put the
gear selector lever in P and block the
rear wheels so the car cannot roll. Then
release the parking brake.
Do not let ice and snow accumulate
underneath
Under some conditions, snow and ice
can build up under the fenders and
interfere with the steering. When driving
in severe winter conditions where this
may happen, you should periodically
check underneath the car to be sure the
movement of the front wheels and the
steering components is not obstructed.
Don't place foreign objects
or materials in the engine
compartment
Placement of foreign object or materials
which prevent cooling of the engine, in
the engine compartment, may cause a
failure or combustion. The manufacturer
is not responsible for the damage caused
by such placement.
To keep locks from freezing
To keep the locks from freezing, squirt
an approved de-icer fluid or glycerine
into the key opening. If a lock is covered
with ice, squirt it with an approved de-
icing fluid to remove the ice. If the lock
is frozen internally, you may be able to
thaw it out by using a heated key. Handle
the heated key with care to avoid injury.