2023 HYUNDAI TUCSON HYBRID checking oil

02
2-19
Recommended SAE Viscosity Number
CAUTION
Always be sure to clean the area around any filler plug, drain plug, or dipstick before
checking or draining any lubricant. This is especially important in dusty or sandy
areas and when the vehicle is used on unpaved roads. Cleaning the plug and dipstick
areas will prevent dirt and grit from entering the engine and other mechanisms that
could be damaged.
Engine oil viscosity (thickness) has an effect on fuel economy and cold weather
operating (engine start and engine oil flowability). Lower viscosity engine oils can
provide better fuel economy and cold weather performance, however, higher viscosity
engine oils are required for satisfactory lubrication in hot weather. Using oils of any
viscosity other than those recommended could result in engine damage.
When choosing an oil, consider the range of temperature your vehicle will be operated
in before the next oil change. Proceed to select the recommended oil viscosity from
the chart.
Temperature Range for SAE Viscosity Numbers
Temperature °C -30 -20 -10 0 10 20 30 40 50
(°F) -10 0 20 40 60 80 100 120
Smartstream G 1.6 T-GDi HEV/PHEV
0W-20 0W-20
An engine oil displaying this API Certification Mark conforms to
the international Lubricant Specification Advisory Committee
(ILSAC). It is recommended to only use engine oils that uphold
this API Certification Mark.

9
9. Maintenance
Engine Compartment ........................................................................\
............... 9-3
Maintenance Services ........................................................................\
.............. 9-4
Owner’s Responsibility ........................................................................\
....................... 9-4
Owner Maintenance Precautions ........................................................................\
....... 9-4
Owner Maintenance ........................................................................\
................. 9-5Owner Maintenance Schedule ........................................................................\
............9-5
Scheduled Maintenance Services ....................................................................9-7Normal Maintenance Schedule ........................................................................\
.......... 9-9
Maintenance Under Severe Usage Conditions ....................................................... 9-12
Explanation of Scheduled Maintenance Items .............................................. 9-14
Engine Oil ........................................................................\
.................................9-16
Checking the Engine Oil Level ........................................................................\
........... 9-16
Checking the Engine Oil and Filter ........................................................................\
....9-17
Engine Coolant/Inverter Coolant ....................................................................9-18Checking the Coolant Level......................................................................\
................. 9-18
Changing Coolant ........................................................................\
............................. 9-20
Hybrid Starter & Generator (HSG) Belt ........................................................... 9-21
Checking the Hybrid Starter & Generator (HSG) Belt .............................................. 9-21
Brake Fluid ........................................................................\
................................ 9-21Checking the Brake Fluid Level ........................................................................\
......... 9-21
Washer Fluid ........................................................................\
............................ 9-22Checking the Washer Fluid Level ........................................................................\
...... 9-22
Air Cleaner ........................................................................\
............................... 9-23Filter Replacement ........................................................................\
............................. 9-23
Cabin Air Filter ........................................................................\
......................... 9-24Filter Inspection........................................................................\
..................................9-24
Filter Replacement ........................................................................\
.............................9-24
Wiper Blades ........................................................................\
........................... 9-25Blade Inspection ........................................................................\
................................ 9-25
Blade Replacement ........................................................................\
............................ 9-25
Battery (Plug-in hybrid vehicle) ..................................................................... 9-29For Best Battery Service ........................................................................\
................... 9-30
Battery Capacity Label ........................................................................\
....................... 9-31
Battery Recharging ........................................................................\
............................ 9-31
Reset Items ........................................................................\
.........................................9-33

Maintenance9-16
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. Follow all of the oil manufacturer’s precautions.
2. Be sure the vehicle is on the level ground in P (Park) with the parking
brake set and the wheels blocked.
3. Turn the engine on and warm the engine up until the coolant
temperature reaches a constant
normal temperature.
4. Turn the engine off, 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 re-insert it fully.
ONX4PH091002NONX4PH091002N
6. Pull the dipstick out again and check the level. The level should be between
F (Full) and L (Low).
ONX4H090020ONX4H090020
7. If the oil level is below 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 4,000 miles (6,000 km).
• 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
Checking the Engine Oil and
Filter
• The lubrication, rust prevention, cooling, and cleaning effect of the
engine oil will gradually degrade
during its use. Have the engine oil and
filter be changed by an authorized
HYUNDAI dealer according to the
Oil Life Management System or
the Maintenance Schedule at the
beginning of this chapter.
• If the maintenance schedule to replace engine oil is exceeded,
the engine oil performance may
deteriorate, and the engine condition
may be affected. Therefore, replace
the engine oil according to the
maintenance schedule.
• To keep the engine in optimal condition, use the recommended
engine oil and filter. If the
recommended engine oil and filter are
not used replace it according to the
maintenance schedule under severe
usage conditions.
• The engine oil change interval is set for the purpose of preventing
oil deterioration, and is not related
the amount of oil consumption; so,
check and refill the amount of the oil
regularly.
Information
When the oil pressure is low due to
insufficient engine oil, the Engine
Oil Pressure (
) warning light will
illuminate. In addition, the enhanced
engine protection system, which limits
the engine’s power is activated and the
Malfunction Indicator Lamp (
) will
illuminate when the vehicle is driven in
this state continuously. When the engine
oil pressure is restored, the warning light
and the enhanced engine protection system
will turn off after the engine is restarted.
CAUTION
The engine oil is very hot immediately
after the vehicle has been driven and
can cause burns during replacement.
Replace the engine oil after the engine
oil has cooled down.
WARNING
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 prolonged 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.

Maintenance9-22
WASHER FLUID
Checking the Washer Fluid Level
ONX4H090010ONX4H090010
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 let brake fluid enter into your
eyes. If brake fluid gets in 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 it will
result in paint damage.
• NEVER use brake fluid which has
been exposed to open air for an
extended time, as its quality cannot
be guaranteed.
• Do not use the wrong type 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).

09
9-31
Battery Capacity Label
„„Type AType A
OTM090063LOTM090063L
„„Type BType B
OTM090064LOTM090064L
1. MF68L-DIN : The HYUNDAI model name of battery
2. 12V : The nominal voltage
3. 68Ah (20HR) : The nominal capacity (in Ampere hours)
4. RC 110min : The nominal capacity (in Ampere hours)
5. 600A : The cold-test current in amperes by SAE/EN
Battery Recharging
By battery charger
Your vehicle has a maintenance-free,
calcium-based battery.
• If the battery becomes discharged over a short time (because, for
example, the headlights or interior
lights were left on while the vehicle
was not in use), recharge it by slow
charging (trickle) for 10 hours.
• If the battery gradually discharges because of high electrical load while
the vehicle is being used, recharge it
at 20-30A for two hours.
WARNING
Always follow these instructions when
recharging your vehicle’s battery to
avoid the risk of SERIOUS INJURY or
DEATH from explosions or acid burns:
• Before performing maintenance or
recharging the battery, turn off all
accessories and stop the engine.
• Keep all flames, sparks, or smoking
materials away from the battery.
• Always work outdoors or in an area
with plenty of ventilation.
• Wear eye protection when checking
the battery during charging.
• The battery must be removed from
the vehicle and placed in a well
ventilated area.
• Watch the battery during charging,
and stop or reduce the charging
rate if the battery cells begin boiling
violently.