2021 HYUNDAI SONATA Owners Manual

Instrument Cluster
4-4
Engine coolant temperature gauge
ODN8A049041
ODN8A049006This gauge indicates the temperature
of the engine coolant when the ignition
switch is in the ON position.
NOTICE
If the gauge pointer moves beyond
the normal range area toward the "H"
position, it indicates overheating that
may damage the engine.
Do not continue driving with an
overheated engine. If your engine
overheats, refer to "If the Engine
Overheats" in chapter 7.
WARNING
Never remove the radiator cap or
reservoir cap when the engine is hot.
The engine coolant is under pressure
and could severely burn. Wait until the
engine is cool before adding coolant to
the reservoir.
Fuel gauge
ODN8A049040
ODN8A049007This gauge indicates the approximate
amount of fuel remaining in the fuel tank.
Information
• The fuel tank capacity is given in
chapter 2.
• The fuel gauge is supplemented by
a low fuel warning light, which will
illuminate when the fuel tank is nearly
empty.
• On inclines or curves, the fuel gauge
pointer may fluctuate or the low fuel
warning light may come on earlier than
usual due to the movement of fuel in
the tank.
„„Type A, B
„
„Type C „
„Type A, B
„
„Type C

04
4-5
WARNING
Running out of fuel can expose vehicle
occupants to danger.
You must stop and obtain additional
fuel as soon as possible after the
warning light comes on or when the
gauge indicator comes close to the "E
(Empty)" level.
NOTICE
Avoid driving with an extremely low
fuel level. Running out of fuel could
cause the engine to misfire and damage
the catalytic converter.
Outside temperature gauge
OTMA048112
oDN8A049031This gauge indicates the current outside
air temperature by 1°F (1°C).
- T
emperature range: -40°F ~ 140°F
(40°C ~ 60°C)
Note that the temperature indicated
on the LCD display may not change
as quickly as the outside temperature
(there may be a slight delay before the
temperature changes.) You can change the temperature unit
from °F to °C or °C to °F in the User
Settings mode in the cluster:
-
Go
to User Settings Mode → Other →
T

emperature Unit.
For vehicles equipped with Automatic
Climate Control, you can also:
- Pr
ess and hold the AUTO and OFF
buttons on the climate control unit for
3 seconds
Both the temperature unit on the cluster
LCD display and climate control screen
will change.
Odometer
OTMA048183
ODN8A049037The odometer indicates the total
distance that the vehicle has been
driven and should be used to determine
when periodic maintenance should be
performed.
„„Type C
„
„Type A, B
„
„Type C
„
„Type A, B

Instrument Cluster
4-6
Range
OAD048563L
ODN8A049033
• The range is the estimated distance
the vehicle can be driven with the
remaining fuel.
• If the estimated distance is below
1 mi. (1 km), the trip computer will
display "----" as range.
Information
• If the vehicle is not on level ground or
the battery power has been interrupted,
the range function may not operate
correctly.
• The range may differ from the actual
driving distance as it is only an estimate
of the available driving range for the
vehicle and driving conditions.
• The trip computer may not register
additional fuel if less than 1.6 gallon (6
liters) of fuel are added to the vehicle.
• The range may vary significantly based
on driving conditions, driving habits,
and condition of the vehicle.
Transmission Shift Indicator
(if equipped)
Automatic transmission shift
indicator
OIG046112
ODN8A049009
This indicator displays which shift button
position is selected.
„„Type C
„
„Type A, B
„
„Type A
„
„Type B

04
4 -7
OIK047141
ODN8A049029
Shift Indicator Pop-up
The pop-up that indicates the current
gear position is displayed in the cluster
for about 2 seconds when shifting into
other positions (P/R/N/D).
The shift indicator pop-up function can
be activated or deactivated from the
User Settings mode in the cluster LCD
display.
Warning and Indicator Lights
Information
Make sure that all warning lights are OFF
after starting the engine. If any light is still
ON, this indicates a situation that needs
attention.
Air Bag Warning Light
This warning light illuminates:
• When you place the ignition switch to
the ON position.
- The air bag w

arning light illuminates
for about 6 seconds and then turns
off when all checks have been
performed
• The air bag warning light will remain
illuminated if there is a malfunction
with the Safety Restraint System (SRS)
air bag operation.
In this case, have the vehicle
inspected by an authorized HYUNDAI
dealer.
Seat Belt Warning Light
This warning light informs the driver that
the seat belt is not fastened.
For more information, refer to “Seat
Belts” in chapter 3.
„„Type A
„
„Type B

Instrument Cluster
4-8
Parking Brake & Brake Fluid
Warning Light
This warning light illuminates:
• When you place the ignition switch to
the ON position.
- The parking br

ake 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 w

arning 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.

Driv
e carefully to the nearest safe
location and stop your vehicle.
2.

With the engine s
topped, 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 braking 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.

04
4-9
Anti-lock Brake System (ABS)
Warning Light
This warning light illuminates:
• When you place the ignition switch to
the ON position.
- The ABS w

arning light illuminates
for about 3 seconds and then turns
off.
• Whenever there is a malfunction with
the ABS.
Note that the hydraulic braking
system will still be operational even if
there is a malfunction with the ABS.
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 the vehicle inspected
by an authorized HYUNDAI dealer.
WARNING
Electronic Brake Force Distribution
(EBD) System Warning Light
When both ABS and Parking Brake &
Brake Fluid Warning Lights are on, the
brake system will not work normally
and you may experience an unexpected
and dangerous situation during sudden
braking.
In this case, avoid high speed driving
and abrupt braking.
Have the vehicle inspected by an
authorized HYUNDAI dealer as soon as
possible.
Information - Electronic Brake
Force Distribution (EBD)
System Warning Light
When the ABS Warning Light is on
or both ABS and Parking Brake &
Brake Fluid Warning Lights are on, the
speedometer, odometer, or tripmeter may
not work. Also, the EPS Warning Light
may illuminate and the steering effort may
increase or decrease.
In this case, have the vehicle inspected by
an authorized HYUNDAI dealer as soon
as possible.
Electronic Parking Brake
(EPB) Warning Light
EPB
This warning light illuminates:
• When you place the Engine Start/Stop
button to the ON position.
- The EPB w

arning light illuminates
for approximately 3 seconds and
then turns off.
• Whenever there is a malfunction with
the EPB.
If this occurs, have the vehicle
inspected by an authorized HYUNDAI
dealer.
Information
The Electronic Parking Brake (EPB)
Warning Light may illuminate when
the Electronic Stability control (ESC)
Indicator Light comes on to indicates that
the ESC is not working properly (This
does not indicate malfunction of the EPB).

Instrument Cluster
4-10
AUTO HOLD Indicator Light
(if equipped)
This indicator light illuminates:
• [White] When you activate the auto
hold system by pressing the AUTO
HOLD button.
• [Green] When you stop the vehicle
completely by depressing the brake
pedal with the auto hold system
activated.
• [Yellow] When there is a malfunction
with the auto hold system.
In this case, have the vehicle
inspected by an authorized HYUNDAI
dealer.
For more information, refer to “Auto
Hold” in chapter 6.
Electric Power Steering (EPS)
Warning Light
This warning light illuminates:
• When you place the ignition switch to
the ON position.
-The

Electric Power Steering Warning
light illuminates for about 3 seconds
and then goes off.
• Whenever there is a malfunction with
the EPS.
If this occurs, have the vehicle
inspected by an authorized HYUNDAI
dealer.
Malfunction Indicator Lamp
(MIL)
This warning light illuminates:
• When you place the ignition switch to
the ON position.
- The malfunction indica

tor light
illuminates for about 3 seconds and
then goes off.
• Whenever there is a malfunction with
either the emission control system or
the engine or the vehicle powertrain.
If this occurs, have the vehicle
inspected by an authorized HYUNDAI
dealer.
NOTICE
Driving with the Malfunction Indicator
Lamp (MIL) on may cause damage to
the emission control system which
could affect drivability and/or fuel
economy.
NOTICE
If the Malfunction Indicator Lamp
(MIL) illuminates, potential catalytic
converter damage is possible which
could result in loss of engine power.
In this case, have the vehicle inspected
by an authorized HYUNDAI dealer as
soon as possible.

04
4-11
Charging System Warning
Light
When this warning light illuminates while
the engine is running, the battery is not
being charged. Immediately turn OFF
all electrical accessories. Try not to use
electrically operated controls, such as
the power windows. Keep the engine
running.
Have the vehicle inspected by an
authorized HYUNDAI dealer as soon as
possible.
Engine Oil Pressure Warning
Light
This warning light illuminates:
When the engine oil pressure is low.
If the engine oil pressure is low:
1.
Driv
e carefully to the nearest safe
location and stop your vehicle.
2.

T
urn the engine off and check
the engine oil level (For more
information, refer to "Engine Oil" in
chapter 8). If the level is low, add oil
as required.
If the warning light remains on after
adding oil or if oil is not available, have
the vehicle inspected by an authorized
HYUNDAI dealer as soon as possible.
NOTICE
• If the engine is not turned OFF
immediately after the Engine
Oil Pressure Warning Light is
illuminated, severe damage could
occur.
• If the warning light stays on while the
engine is running, it indicates that
there may be serious engine damage
or malfunction. In this case:
1.

S
top the vehicle as soon as it is
safe to do so.
2.

T
urn off the engine and check the
oil level. If the oil level is low, fill
the engine oil to the proper level.
3.

S
tart the engine again. If the
warning light stays on after the
engine has started, turn the
engine off immediately. In this
case, have the vehicle inspected
by an authorized HYUNDAI dealer.
Low Fuel Level Warning Light
This warning light illuminates:
When the fuel tank is nearly empty. Add
fuel as soon as possible.
NOTICE
Driving with the Low Fuel Level warning
light on or with the fuel level below "E"
can cause the engine to misfire and
damage the catalytic converter.