coolant level HYUNDAI TUCSON HYBRID 2021 User Guide

09
9-15
Checking the engine oil level
Engine oil is used for lubricating,
cooling, and operating various hydraulic
components in the engine. Engine oil
consumption while driving is normal,
and it is necessary to check and refill the
engine oil regularly. Also, check and refill
the oil level within the recommended
maintenance schedule to prevent
deterioration of oil performance.
Check the engine oil following the below
procedure.
1.
Follo
w all of the oil manufacturer’s
precautions.
2.
Be sure the v

ehicle is on the level
ground in P (Park) with the parking
brake set and the wheels blocked.
3.
Turn the engine on and w

arm
the engine up until the coolant
temperature reaches a constant
normal temperature.
4.
Turn the engine o

ff, remove the oil
filler cap and pull the dipstick out.
Wait for 15 minutes for the oil to return
to the oil pan.
5.
Wipe the dipstick clean and r

e-insert
it fully.
ONX4H090002
6. Pull the dipstick out again and check
the le vel. The level should be between
F (Full) and L (Low).
ONX4H090020
7. Check if the oil lev el is between the
F-L line and refill it if the oil level is
below the L, add enough oil to bring
the level to F.
Use only the specified engine oil (Refer
to “Recommended Lubricants and
Capacities” section in chapter 2).
NOTICE
To prevent damage to your engine:
• Do not overfill with engine oil. Add oil
in small quantities and recheck level
to ensure engine is not overfilled.
• The engine oil consumption may
increase while you break in a new
vehicle and it will be stabilized after
driving 3,750 miles.
• The engine oil consumption can be
affected by driving habits, climate
conditions, traffic conditions,
oil quality, etc. Therefore, it is
recommended that you inspect the
engine oil level regularly and refill it
if necessary.
EnginE oil

09
9-17
The high-pressure cooling system has a
reservoir filled with year-round antifreeze
coolant. The reservoir is filled at the
factory.
Check the antifreeze protection and
coolant level at least once a year, at
the beginning of the winter season and
before traveling to a colder climate.
Checking the coolant level
„„Engine coolant
ONX4H090004
„„Inverter coolant
ONX4H090005
Check the condition and connections
of all cooling system hoses and
heater hoses. Replace any swollen or
deteriorated hoses.
The coolant level should be filled
between the MAX and the MIN marks on
the side of the coolant reservoir when
the engine is cool.If the coolant level is low, add the
selected
an

ti-freeze according to the
proper
coolan
t mix ratio
t
o bring the level
to the MAX mark, but do not overfill.
If frequent additions are required, we
recommend that you see an authorized
HYUNDAI dealer for a cooling system
inspection.
„„Engine coolant cap
ONX4H090006
„„Inverter coolant cap
ONX4H090007
WARNING
Never remove the engine
coolant cap and/or inverter
coolant cap or the drain plug
while the engine and radiator
are hot. Hot coolant and steam
may blow out under pressure,
causing serious injury.
EnginE coolant/invErtEr coolant

Maintenance
9-18
Turn the vehicle off and wait until the
engine cools down. Use extreme care
when removing the engine coolant
cap and/or inverter coolant cap. Wrap
a thick towel around it, and turn it
counterclockwise slowly to the first
stop. Step back while the pressure is
released from the cooling system. When
you are sure all the pressure has been
released, press down on the cap, using
a thick towel, and continue turning
counterclockwise to remove it.
Information
The engine coolant and/or inverter coolant
level is influenced by the hybrid system
temperature. Before checking or refilling
the engine coolant and/or inverter coolant,
turn the hybrid vehicle off.
WARNING
The electric motor for the cooling fan
may continue to operate or start up
when the engine is not running and
can cause serious injury. Keep hands,
clothing and tools away from the
rotating fan blades of the cooling fan.
Always turn off the vehicle unless the
vehicle has to be inspected with the
engine on. Be cautious as the cooling
fan may operate if the negative (-)
battery terminal is not disconnected.
WARNING
Make sure the coolant cap is properly
closed after refilling coolant. Otherwise
the engine could be overheated while
driving.
„„Engine compartment front view
OTMH090008
1. Check if the coolant cap label is
straight In front.
„„Engine compartment rear view
ONX4H090008
2. Make sure that the tiny protrusions
inside the c oolant cap is securely
interlocked.

09
9-21
washEr fluid
Checking the washer fluid level
ONX4H090010
Check the fluid level in the washer fluid
reservoir and add fluid if necessary.
Plain water may be used during summer
months if washer fluid is not available.
However, use washer solvent with
antifreeze characteristics in cold climates
to prevent freezing.
WARNING
To prevent serious injury or death, take
the following safety precautions when
using washer fluid:
• Do not use engine coolant or
antifreeze in the washer fluid
reservoir. Engine coolant can
severely obscure visibility when
sprayed on the windshield and
may cause loss of vehicle control
resulting in an accident or damage to
paint and body trim.
• Do not allow sparks or flame to
contact the washer fluid or the
washer fluid reservoir. Washer fluid
may contain alcohol and can be
flammable.
• Do not drink washer fluid and avoid
contact with skin. Washer fluid is
harmful to humans and animals.
• Keep washer fluid away from
children and animals.
WARNING
Do not allow brake fluid to come in
contact with your eyes. If brake fluid
comes in contact with your eyes, flush
your eyes with clean water for at least
15 minutes and get immediate medical
attention.
NOTICE
• Do not allow brake fluid to contact
the vehicle’s body paint, as paint
damage will result.
• Brake fluid, which has been exposed
to open air for an extended time
should NEVER be used as its quality
cannot be guaranteed. It should be
disposed of properly.
• Do not use the wrong kind of brake
fluid. A few drops of mineral based
oil, such as engine oil, in your brake
system can damage brake system
parts.
Information
Use only the specified brake fluid (refer
to “Recommended Lubricants and
Capacities” section in chapter 2).

I
I-5
Reducing the risk of a rollover ........................................................................\
.6-53
Rocking the vehicle ........................................................................\
..................6-51
Smooth cornering ........................................................................\
.....................6-52
Special driving conditions ........................................................................\
........6-51
Driver Attention Warning (DAW)
......................................................................7-57
System malfunction and limitations .................................................................7-60
System operation ........................................................................\
......................7-58
System settings ........................................................................\
........................7-57
E
Emergency / Roadside assistance accessories
....................................................8-27
Fire extinguisher ........................................................................\
.......................8-27
First aid kit ........................................................................\
...............................8-27
Tire pressure gauge ........................................................................\
.................8-27
Triangle reflector ........................................................................\
......................8-27
Emission control system
........................................................................\
..............9-66
Engine
........................................................................\
............................................2-8
Engine compartment
........................................................................\
..............2-7, 9-3
Engine coolant/inverter coolant
........................................................................\
...9-17
Changing coolant ........................................................................\
......................9-19
Checking the coolant level ........................................................................\
.......9-17
Engine number
........................................................................\
.............................2-15
Engine oil
........................................................................\
.....................................9-15
Checking the engine oil level ........................................................................\
...9-15
Checking the engine oil and filter ....................................................................9-16
Explanation of scheduled maintenance items
......................................................9-13
Exterior features ........................................................................\
........................... 5-67
Fuel filler door ........................................................................\
..........................5-78
Hood ........................................................................\
.........................................5-67
Liftgate ........................................................................\
.....................................5-68
Power liftgate ........................................................................\
...........................5-70
Smart liftgate ........................................................................\
............................5-76
Exterior features ........................................................................\
......................... 5-127
Roof side rails ........................................................................\
.........................5-127
Exterior overview (I)
........................................................................\
.....................2-2
Exterior overview (II)
........................................................................\
....................2-3