engine coolant HYUNDAI SONATA HYBRID 2019 Owners Manual

1-6
Your vehicle at a glanceE
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OLFH017005
1. Engine oil filler cap ...........................7-19
2. Engine oil dipstick .............................7-18
3. Radiator cap .....................................7-20
4. Engine coolant reservoir ...................7-21
5. Brake fluid reservoir ..........................7-24
6. Air cleaner.........................................7-26
7. Inverter coolant reservoir ..................7-20
8. Windshield washer fluid reservoir .....7-25
9. Fuse box ...........................................7-52
The actual engine room in the vehicle may differ from the illustration.

3-59
Convenient features of your vehicle
3
Fuel Gauge
This gauge indicates the approxi- mate amount of fuel remaining in thefuel tank.Information
 The fuel tank capacity is specified in chapter 8.
 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. Avoid driving with an extremely
low fuel level. Running out of fuel
could cause the engine to misfire,
damaging the catalytic converter.
Engine coolant temperature
This mode displays the temperatureof the engine coolant when the
engine is running.
NOTICE
i
Running out of fuel can expose
vehicle occupants to danger.
You must stop and obtain addi-
tional fuel as soon as possibleafter the warning light comes
on or when the gauge indicator
comes close to the "E (Empty)"
level.
WARNING
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3-78
Convenient features of your vehicle
Engine overheated
This warning message is displayed
when the engine coolant tempera-
ture is above 120°C (248°F). This
means that the engine is overheated
and may be damaged.
If your vehicle is overheated, refer
to "Overheating" in chapter 6.
Check headlight (if equipped)
This warning message is displayed,
if the headlamps are not operating
properly. The headlamp bulb may
need to be replaced. If the vehicle is
equipped with LED headlamps, have
the vehicle inspected by an author-
ized HYUNDAI dealer.Information
Make sure to replace the burned out
bulb with a new one of the same
wattage rating.
Check headlamp LED (if equipped)
This warning message is displayed if
there is a problem with the LED
headlamp. Have the vehicle inspect-
ed by an authorized HYUNDAI deal-
er.
Check headlamp cooling fan(if equipped)
This warning message is displayed if
there is a problem with headlamp
fan. Have the vehicle inspected by an
authorized HYUNDAI dealer.
Check smart high beam system
(if equipped)
This warning message is displayed if
there is a problem with the Smart
High Beam System. Have the vehicle
inspected by an authorized
HYUNDAI dealer.
For more information, refer to
"Smart High Beam System" in
chapter 3.
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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.

5-42
Driving your vehicle
When ECO mode is activated:
The acceleration response may beslightly reduced as the accelerator
pedal is depressed moderately.
The air conditioner performance may be limited.
The shift pattern of the automatic transmission may change.
The engine noise may get louder.
The above situations are normal conditions when ECO mode is acti-
vated to improve fuel efficiency. Limitation of ECO mode operation:
If the following conditions occur while
ECO mode is operating, the system
operation is limited even though
there is no change in ECO indicator.
When the coolant temperature is
low:The system will be limited until
engine performance becomes nor-mal.
When driving up a hill: The system will be limited to gain
power when driving uphill because
engine torque is restricted.
When driving the vehicle with the automatic transmission gear shift
lever in manual shift mode: The system will be limited accord- ing to the shift location.
When the accelerator pedal is deeply depressed for a few seconds: The system will be limited, judging
that the driver wants to speed up.SPORT mode
SPORT mode managesthe driving dynamics byautomatically adjusting the
steering effort, the engine
and transmission control
logic for enhanced driver
performance.
When SPORT mode is selected by pressing the DRIVE MODE button,
the SPORT indicator will illuminate.
Whenever the engine is restarted, the Drive Mode will revert back to
ECO mode. If SPORT mode is
desired, re-select SPORT mode
from the DRIVE MODE button.
When SPORT mode is activated:
- The engine rpm will tend to remainraised over a certain length of time
even after releasing the accelerator
- Upshifts are delayed when accel- erating
Information
In SPORT mode, the fuel efficiency
may decrease.
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5-44
When ECO mode is activated:
The acceleration response may be
slightly reduced as the accelerator
pedal is depressed moderately.
The air conditioner performance may be limited.
The shift pattern of the automatic transmission may change.
The engine noise may get louder.
The above situations are normal conditions when ECO mode is acti-
vated to improve fuel efficiency. Limitation of ECO mode operation:
If the following conditions occur while
ECO mode is operating, the system
operation is limited even though
there is no change in ECO indicator.
When the coolant temperature is
low:The system will be limited until
engine performance becomes nor-mal.
When driving up a hill: The system will be limited to gain
power when driving uphill because
engine torque is restricted.
When driving the vehicle with the automatic transmission gear shift
lever in manual shift mode: The system will be limited accord- ing to the shift location.
When the accelerator pedal is deeply depressed for a few seconds: The system will be limited, judging
that the driver wants to speed up.
Driving your vehicle

5-103
Driving your vehicle
5
Highway driving
Tires
Adjust the tire inflation, as specified.
Under-inflation may overheat or
damage the tires.
Do not install worn-out or damaged
tires, which may reduce traction or
fail the braking operation.Information
Never over-inflate your tires above the
maximum inflation pressure, as speci-
fied on your tires.
Fuel, engine coolant and engine oil
Driving at higher speeds on the high-
way consumes more fuel and is less
efficient than driving at a slower,
more moderate speed. Maintain a
moderate speed in order to conserve
fuel when driving on the highway.
Be sure to check both the engine
coolant level and the engine oil
before driving.
Drive belt
A loose or damaged drive belt may
overheat the engine.
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5-106
Driving your vehicle
Use approved window washer
anti-freeze solution in system
To prevent the window washer from
being frozen, add authorized window
washer anti-freeze solution, as spec-
ified on the window washer contain-
er. Window washer anti-freeze solu-
tion is available from an authorized
HYUNDAI dealer, and so are the
most vehicle accessory outlets. Donot use engine coolant or other types
of anti-freeze solution to prevent any
damage to the vehicle paint.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.
When there is the risk that your park-
ing brake may freeze, temporarily
apply it with the shift lever in P
(Park). Also, block the rear wheels in
advance, so the vehicle may not roll.
Then, release the parking brake.
Do not let ice and snow accumu- late underneath
Under some conditions, snow and
ice can build up under the fenders
and interfere with the steering. When
driving in such conditions during the
severe winter, you should check
underneath the vehicle on a regular
basis, so that moving the front
wheels and the steering components
is unblocked.Carry emergency equipment
In accordance with weather condi-
tions, you should carry appropriate
emergency equipment, while driving.
Some of the items you may want to
carry include tow straps or chains,
flashlight, emergency flares, sand,
shovel, jumper cables, window
scraper, gloves, ground cloth, cover-
alls, blanket, etc. Do not place objects or materials
in the engine compartment
Putting objects or materials in the
engine compartment may cause an
engine failure or combustion,
because those may block the engine
cooling. Such damage will not be
covered by the manufacturer’s war-
ranty.

6-7
What to do in an emergency
6
If your engine coolant temperature
gauge indicates overheating, you
experience a loss of power, or hear
loud pinging or knocking, the engine
may be overheating. If this happens,
you should:
1. Turn ON the hazard warning flash-er, pull off the road and stop as
soon as it is safe to do so.
2. Place the shift lever in P (Park) and set the parking brake.
3. Make sure that there is no hotsteam gushing out of the engine
compartment. When it is safe to
do so, open the engine compart-
ment, and check the water-pump
connector. When the water-pumpconnector is disconnected, stop
the engine, re-connect the water-
pump connector, and then re-start
the engine.
4. Set the temperature and the air flow to the maximum, and turn ON
the air conditioner. 5. When the Service warning light
( ) illuminates on the instru-
ment cluster, immediately stop the
engine, and contact an authorized
HYUNDAI dealer. When the
engine warning light ( ) illumi-
nates, or when the coolant or hotsteams gush out of the engine
compartment, leave the engine
compartment opened, while run-
ning the engine. This is to ventilate
the engine compartment and to
cool down the engine.
6. Check the coolant temperature gauge on the instrument cluster to
make sure the coolant temperature
is sufficiently cooled down. Check
the coolant level. When it is insuffi-
cient, check its connection with the
radiator, the heater hose, and the
water pump for any leakage. When
there is no leakage, add the
coolant. However, if the problems
persists, such as the illumination of
the warning lights, leakages, or the
cooling-fan malfunction, which may
overheat the engine, immediately
stop the engine, and have your
vehicle checked by an authorized
HYUNDAI dealer.
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OLFH067029L

6-8
What to do in an emergency
7. If you cannot find the cause of theoverheating, wait until the engine
temperature has returned to nor-
mal. Then, if coolant has beenlost, carefully add coolant to the
reservoir to bring the fluid level in
the reservoir up to the halfway
mark.
8. Proceed with caution, keeping alert for further signs of overheat-
ing. If overheating happens again,
call an authorized HYUNDAI deal-
er for assistance.
Serious loss of coolant indi-cates a leak in the cooling sys-
tem and should be checked as
soon as possible by an author-
ized HYUNDAI dealer.
CAUTION
The electric motor for
the cooling fan may
continue to operate
or start up when theengine is not running
and can cause serious injury.
Keep hands, clothing and tools
away from the rotating fan
blades of the cooling fan.
WARNING
Your vehicle is equipped with a pres-
surized coolant
reserve tank. NEVER
remove the coolant
reserve tank cap or the radiatordrain plug while the engine and
radiator are HOT. Hot coolant
and steam may blow out under
pressure, causing serious
injury.
Turn the engine off and wait
until the engine cools down.
Use extreme care when remov-
ing the coolant reserve tank
cap. Wrap a towel or thick rag
around it, and turn it counter-
clockwise slowly to release
some of the pressure from the
system. Step back while thepressure is released.
When you are sure all the pres-
sure has been released, contin-ue turning the cap counter-
clockwise to remove it.
WARNING