2018 Hyundai Sonata Plug-in Hybrid checking oil

3-137
Convenient features of your vehicle
3
Checking the amount of air conditioner refrigerant andcompressor lubricant
When the amount of refrigerant is
low, the performance of the air con-
ditioning is reduced. Overfilling also
has a bad influence on the air condi-
tioning system.
Therefore, if abnormal operation is
found, we recommend that the sys-
tem be inspected by an authorized
HYUNDAI dealer.
Air Conditioning refrigerant label
The actual Air Conditioning refrigerant
label in the vehicle may differ from the
illustration.
The symbols and specifications on
the label refer to the following:
1. Classification of refrigerant
2. Amount of refrigerant
3. Classification of Compressor lubri-
cant
Refer to chapter 8 for more detail
location of the air conditioning refrig-
erant label.
Because the refriger-
ant is at very high
pressure, the air con-
ditioning system
should only be serv-
iced by trained and certified
technicians. It is important that
the correct type and amount of
oil and refrigerant is used.
Otherwise, it may cause damage
to the vehicle and personal injury.
WARNING
POE
OLFP046583N
■ Example

7
Maintenance
7
Maintenance
Engine compartment .............................................7-3
Maintenance services ...........................................7-4
Owner's responsibility ......................................................7-4
Owner maintenance precautions ..................................7-4
Owner maintenance ...............................................7-5
Owner maintenance schedule ........................................7-6
Scheduled maintenance services.........................7-8
Normal maintenance schedule .......................................7-9
Maintenance under severe usage conditions ..........7-12
Severe driving conditions..............................................7-13
Explanation of scheduled maintenance
items.......................................................................7\
-14
Engine oil ..............................................................7-17
Checking the engine oil level .......................................7-17
Checking the engine oil and filter ..............................7-18
Engine coolant/inverter coolant .......................7-19
Checking the engine/inverter coolant level .............7-19
Changing engine coolant...............................................7-22
Hybrid starter & generator (HSG) belt.............7-22
Checking the hybrid starter &
generator (HSG) belt ......................................................7-22
Brake fluid ............................................................7-23
Checking the brake fluid level .....................................7-23
Washer fluid .........................................................7-24
Checking the washer fluid level ..................................7-24
Parking brake .......................................................7-24
Checking the parking brake .........................................7-24
Air cleaner ............................................................7-25
Filter replacement ...........................................................7-25
Climate control air filter .....................................7-27
Filter inspection ...............................................................7-27
Wiper blades .........................................................7-29
Blade inspection ..............................................................7-29
Blade replacement ..........................................................7-29
Battery...................................................................7-31
For best battery service................................................7-32
Battery recharging .........................................................7-32
Reset features .................................................................7-33
Tires and wheels ..................................................7-34
Tire care ........................................................................\
....7-34
Recommended cold tire inflation pressures.............7-35
Check tire inflation pressure........................................7-36
Tire rotation .....................................................................7-3\
7
Wheel alignment and tire balance ..............................7-38
Tire replacement .............................................................7-38
7

7-6
Maintenance
Owner maintenance schedule
When you stop for fuel:
Check the engine oil level.
Check coolant level in the enginecoolant reservoir.
Check the windshield washer fluid level.
Check for low or under-inflated tires.
While operating your vehicle:
Note any changes in the sound ofthe exhaust or any smell of
exhaust fumes in the vehicle.
Check for vibrations in the steering wheel. Notice if there is any
increased steering effort or loose-
ness in the steering wheel, or
change in its straight-ahead posi-
tion.
Notice if your vehicle constantly turns slightly or "pulls" to one side
when traveling on smooth, level
road.
When stopping, listen and check for unusual sounds, pulling to one
side, increased brake pedal travel
or "hard-to-push" brake pedal.
If any slipping or changes in the operation of your transmission
occurs, check the transmission
fluid level.
Check the automatic transmission P (Park) function.
Check the parking brake.
Check for fluid leaks under your vehicle (water dripping from the air
conditioning system during or after
use is normal).
At least monthly:
Check coolant level in the enginecoolant reservoir.
Check the operation of all exterior lights, including the stoplights, turn
signals and hazard warning flashers.
Check the inflation pressures of all tires including the spare for tires
that are worn, show uneven wear,
or are damaged.
Check for loose wheel lug nuts.
Be careful when checking your
engine coolant level when the
engine is hot. This may result in
coolant being blown out of the
opening and cause serious
burns and other injuries.
WARNING

7-17
7
Maintenance
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O I
IL
L
Checking the engine oil level
1. Follow all of the oil manufacturer’s
precautions.
2. Be sure the vehicle is on level ground in P (Park) with the park-
ing brake set and the wheels
blocked.
3. Turn the engine on and allow the engine to reach normal operating
temperature.
4. Turn the hybrid system off and wait about five minutes for the oil
to return to the oil pan.
5. Pull the dipstick out, wipe it clean, and re-insert it fully. 6. Pull the dipstick out again and
check the level. The level should
be between F and L.
7. If it is near or at L, add enough oil to bring the level to F. 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.
Do not spill engine oil when adding or changing engine oil.
Use a funnel to help prevent oil
from being spilled on engine
components. Wipe off spilled oil
immediately
NOTICE
OLFH076002

7-18
Maintenance
Use only the specified engine oil
(refer to "Recommended
Lubricants and Capacities" in
chapter 8).
Checking the engine oil and
filter
Have engine oil and filter changed by
an authorized HYUNDAI dealer
according to the Maintenance
Schedule at the beginning of this
chapter.
NOTICE
CALIFORNIA PROPOSITION 65
WARNING
Engine oil contains chemicals
known to the State of California
to cause cancer, birth defects
and reproductive harm. Used
engine oil may cause irritation
or cancer of the skin if left in
contact with the skin for pro-
longed periods of time. Always
protect your skin by washing
your hands thoroughly with
soap and warm water as soon
as possible after handling used
oil.
WARNING
OLFH074003

7-23
7
Maintenance
B
BR
RA
A K
KE
E
F
F L
LU
U I
ID
D
Checking the brake fluid level
Check the fluid level in the reservoir
periodically. The fluid level should be
between MAX and MIN marks on the
side of the reservoir.
Before removing the reservoir cap
and adding brake fluid, clean the
area around the reservoir cap thor-
oughly to prevent brake fluid contam-
ination. If the level is low, add the specified
brake fluid to the MAX level. The level
will fall with accumulated mileage.
This is a normal condition associated
with the wear of the brake linings. If
the fluid level is excessively low, have
the brake system checked by an
authorized HYUNDAI dealer.
Do not allow brake fluid to con-
tact 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 dis-
posed of properly.
Do not use the wrong kind of brake fluid. A few drops of miner-
al 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" in chapter 8).
i
NOTICE
OLFH074007
If the brake system requires fre-
quent additions of fluid this
could indicate a leak in the
brake system. Have the vehicle
inspected by an authorized
HYUNDAI dealer.
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.
WARNING

I-4
Driver assist system ......................................................3-119Rear parking assist system .......................................3-120
Rear parking assist system precautions....................3-123
Rear view camera .....................................................3-119
Driver attention alert system (DAA) ..............................5-63 Resetting the system ...................................................5-65
System malfunction ....................................................5-65
System setting and activation .....................................5-63
System standby...........................................................5-65
Driver position memory system .....................................3-14 Easy Access Function .................................................3-15
Storing Positions into Memory ..................................3-14
Driving the Hybrid/Plug-in Hybrid Vehicle ....................H22 Changing plug-in hybrid mode ...................................H26
Energy flow.................................................................H38
Hybrid system gauge ..................................................H24
Special features ...........................................................H23
Starting the vehicle .....................................................H22
Warning and indicator lights.......................................H27
Warning messages.......................................................H28 Emission control system .................................................7-84
Crankcase emission control system ...........................7-84
Evaporative emission control system including onboard refueling vapor recovery (ORVR) ............7-84
Exhaust emission control system ...............................7-85
Engine ........................................................................\
.......8-2
Engine compartment..................................................1-6, 7-3
Engine coolant/inverter coolant ......................................7-19 Changing engine coolant ............................................7-22
Checking the engine/inverter coolant level................7-19
Engine number ..................................................................8-9
Engine oil ........................................................................\
7-17 Checking the engine oil and filter ..............................7-18
Checking the engine oil level .....................................7-17
Engine Start/Stop button ...................................................5-5 Engine Stop/Start button positions ...............................5-7
Illuminated Engine Start/Stop button ...........................5-6
Starting the hybrid system............................................5-9
Explanation of scheduled maintenance items.................7-14
Exterior features..............................................................3-46 Fuel Filler Door (Hybrid) ...........................................3-53
Fuel Filler Door (Plug-in hybrid) ...............................3-56
Hood ........................................................................\
...3-46
Smart Trunk ................................................................3-50
Trunk ........................................................................\
..3-47
Index
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