2021 HYUNDAI TUCSON HYBRID oil temperature

02
2-13
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 -20-10 010 20 30 4050
(°F) -10020 40 60 80 100120
Smartstream G 1.6 T-GDi HEV
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.

4. Instrument cluster
Instrument cluster
Instrument cluster ........................................................................\
....................4-4Instrument cluster control ........................................................................\
...................4-5
Instrument panel illumination ........................................................................\
...........4-5
Gauges and meters ........................................................................\
..............................4-5
Speedometer ........................................................................\
.....................................4-5
Power gauge ........................................................................\
.....................................4-6
Fuel gauge ........................................................................\
.........................................4-6
Hybrid battery SOC (State of Charge) gauge ...........................................................4 -7
Outside temperature gauge ........................................................................\
..............4 -7
Odometer ........................................................................\
..........................................4-8
Distance to empty ........................................................................\
............................4-8
Fuel economy (for 10.25-inch cluster) ....................................................................4-9
Transmission shift indicator ........................................................................\
................4-9
Automatic transmission shift indicator ...................................................................4-9
Warning and indicator lights ........................................................................\
.............4-10
Seat belt warning light ........................................................................\
....................4-10
Air bag warning light ........................................................................\
.......................4-10
Parking brake & Brake fluid warning light ..............................................................4-10
Regenerative brake warning light ........................................................................\
....4-11
Anti-lock Brake System (ABS) warning light ...........................................................4-11
Electronic Brake Force Distribution (EBD) system warning light .........................4-12
Electric Power Steering (EPS) warning light ..........................................................4-12
Malfunction Indicator Lamp (MIL) ........................................................................\
..4-13
Electronic Parking Brake (EPB) warning light ........................................................4-13
AUTO HOLD indicator light ........................................................................\
.............4-13
Charging system warning light ........................................................................\
.......4-14
Engine oil pressure warning light ........................................................................\
...4-14
Low fuel level warning light ........................................................................\
............4-15
Service warning light ........................................................................\
.......................4-15
Exhaust system (GPF) warning light .......................................................................4-15
Master warning light ........................................................................\
........................4-16
Low tire pressure warning light ........................................................................\
......4-16
Forward Safety warning light ........................................................................\
...........4-17
Lane Safety indicator light ........................................................................\
...............4-17
4 Wheel Drive (4WD) warning light ........................................................................\
.4-17
4 Wheel Drive (4WD) LOCK indicator light ..............................................................4-17
LED headlight warning light ........................................................................\
............4-18
Icy road warning light ........................................................................\
......................4-18
Ready indicator ........................................................................\
................................4-19
EV mode indicator ........................................................................\
...........................4-19
Electronic Stability Control (ESC) indicator light ...................................................4-19
Electronic Stability Control (ESC) OFF indicator light ..........................................4-19
4

05
5-107
Air conditioning
HYUNDAI Air Conditioning Systems are
filled with R-1234yf refrigerant.
1.
Start the engine. Push the air
conditioning butt
on.
2.
Set the mode t

o the
position.
3.
Set the air in

take control to the
outside air or recirculated air position.
4.
Adjus

t the fan speed control and
temperature control to maintain
maximum comfort.
Information
ONX4050071
Your HYUNDAI vehicle is filled with
R-1234-yf refrigerant. Information
regarding the refrigerant designation
for your vehicle can be found on the
information label located under the hood.
Refer to chapter 8 for the location of the
air conditioning refrigerant label.
NOTICE
• The refrigerant system should only
be serviced by trained and certified
technicians to insure proper and safe
operation.
• The refrigerant system should be
serviced in a well-ventilated place.
• The air conditioning evaporator
(cooling coil) shall never be repaired
or replaced with one removed from
a used or salvaged vehicle and new
replacement MAC evaporators shall
be certified (and labeled) as meeting
SAE Standard J2842.
NOTICE
• When using the air conditioning
system, monitor the temperature
gauge closely while driving up
hills or in heavy traffic when
outside temperatures are high.
Air conditioning system operation
may cause engine overheating.
Continue to use the fan but turn the
air conditioning system off if the
temperature gauge indicates engine
overheating.
• When opening the windows in humid
weather air conditioning may create
water droplets inside the vehicle.
Since excessive water droplets
may cause damage to electrical
equipment, air conditioning should
only be used with the windows
closed.

Driving your vehicle
6-50
Various driving situations, which you may
encounter in SMART mode
• The driving mode automatically
changes to ECO mode after a certain
period of time, when you gently
depress the accelerator pedal (Your
driving is categorized to be mild.).
• The driving mode automatically
changes from SMART ECO mode
to SMART COMFORT mode after a
certain period of time, when you
sharply or repetitively depress the
accelerator pedal.
• The driving mode automatically
changes to SMART COMFORT mode
with the same driving patterns, when
the vehicle starts to drive on an
upward slope of a certain angle. The
driving mode automatically returns to
SMART ECO mode, when the vehicle
enters a leveled road.
• The driving mode automatically
changes to SMART SPORT, when
you abruptly accelerate the vehicle
or repetitively operate the steering
wheel (Your driving is categorized
to be sporty.). In this mode, your
vehicle drives in a lower gear for
abrupt accelerating/decelerating
and increases the engine brake
performance.
• You may still sense the engine brake
performance, even when you release
the accelerator pedal in SMART
SPORT mode. It is because your
vehicle remains to be in a lower gear
over a certain period of time for next
acceleration. Thus, it is a normal
driving situation, not indicating any
malfunction.
• The driving mode automatically
changes to SMART SPORT mode
only in harsh driving situations. In
most of the normal driving situations,
the driving mode sets to be either
in SMART ECO mode or in SMART
COMFORT mode. Limitation of SMART mode
The SMART mode may be limited in
following situations. (The OFF indicator
illuminates in those situations.)
•
The vehicle is driven using the paddle
shifter (manual shift mode) : SMART
mode is deactivated determining that
the driver wants to drive the vehicle
manually.
• Cruise Control is activated : Cruise
Control may deactivate SMART mode
when the vehicle is controlled by the
set speed of Cruise Control. (SMART
mode is not deactivated just by
turning on Cruise Control)
• The transmission oil temperature is either
extremely low or extremely high : The
SMART mode can be active in most of
the normal driving situations. However,
an extremely high/ low transmission oil
temperature may temporarily deactivate
the SMART mode, because the
transmission condition is out of normal
operation condition.

06
6-57
Winter precautions
Use high quality ethylene glycol coolant
Your vehicle is delivered with high
quality ethylene glycol coolant in the
cooling system. It is the only type of
coolant that should be used because it
helps prevent corrosion in the cooling
system, lubricates the water pump and
prevents freezing. Be sure to replace or
replenish your coolant in accordance
with the maintenance schedule in
chapter 9. Before winter, have your
coolant tested to assure that its freezing
point is sufficient for the temperatures
anticipated during the winter.
Check battery and cables
Winter temperatures affect battery
performance. Inspect the battery and
cables, as specified in chapter 9. The
battery charging level can be checked
by an authorized HYUNDAI dealer or in a
service station.
Change to “winter weight” oil if
necessary
In some regions during winter, it is
recommended to use the “winter
weight” oil with lower viscosity In
addition, replace the engine oil and filter
if it is close to the next maintenance
interval. Fresh engine oil ensures
optimum engine operation during the
winter months. For further information,
refer to chapter 2. When you are not
sure about a type of winter weight oil,
we recommend that you consult an
authorized HYUNDAI dealer.Check spark plugs and ignition system
Inspect the spark plugs, as specified in
chapter 9. If necessary, replace them.
Also check all ignition wirings and
components for any cracks, wear-out,
and damage.
To prevent locks from freezing
To prevent the locks from being frozen,
spray approved de-icing fluid or glycerin
into key holes. When a lock opening is
already covered with ice, spray approved
de-icing fluid over the ice to remove it.
When an internal part of a lock freezes,
try to thaw it with a heated key. Carefully
use the heated key to avoid an injury.
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 specified
on the window washer container.
Window washer anti-freeze solution is
available from an authorized HYUNDAI
dealer, and most vehicle accessory
outlets. Do not use engine coolant or
other types of anti-freeze solution, to
prevent any damage to the vehicle paint.

09
9 -7
Follow Normal Maintenance Schedule if the vehicle is usually operated where none of
the following conditions apply. If any of the following conditions apply, you must follow
the Maintenance Under Severe Usage Conditions.
• Repeated driving short distance of less than 5 miles (8 km) in normal temperature or
less than 10 miles (16 km) in freezing temperature
• Extensive engine idling or low speed driving for long distances
• Driving on rough, dusty, muddy, unpaved, graveled or salt-spread roads
• Driving in areas using salt or other corrosive materials or in very cold weather
• Driving in heavy dust conditions
• Driving in heavy traffic area
• Driving on uphill, downhill, or mountain road repeatedly
• Using for towing or camping, and driving with loading on the roof
• Driving as a patrol car, taxi, other commercial use of vehicle towing
• Frequently driving under high speed or rapid acceleration
• Frequently driving in stop-and-go condition
• Engine oil usage which is not recommended (mineral type, semi-synthetic, lower
grade, etc.)
Information
• As it is normal for engine oil to be consumed during driving, the engine oil level should
be checked on regular basis.
• The engine oil change interval for normal operating conditions is based on the use of
the recommended engine specification. If the recommended engine oil specification
is not used, then replace the engine oil according to the maintenance schedule under
severe operating conditions.
If your vehicle is operated under the above conditions, you should inspect, replace
or refill more frequently than the following Normal Maintenance Schedule. After the
periods or distance shown in the chart, continue to follow the prescribed maintenance
intervals.
schEdulEd maintEnancE sErvicEs

Maintenance
9-12
Maintenance itemMaintenance
operation Maintenance Intervals Driving
condition
Driveshaft and boots IEvery 5,000 miles
(8,000 km) or 6 months C, D, E, F, G,
H, I, J
Drive shaft IInspect more frequently
depending on the condition C, D, E, F, G,
H, I, J
Climate control air filter
(for evaporator and blower
unit) RReplace more
frequently depending on the condition C, E
Rear differential oil (AWD) RReplace every 72,000
miles (120,000 km) C, D, E, G, H,
I, J
Transfer case oil (AWD) RReplace every 72,000
miles (120,000 km) C, D, E, G, H,
I, J
Severe driving conditions
A. Repeatedly driving short distance of less than 5 miles (8 km) in normal temperature
or less than 16 miles (10 km ) in freezing temperature
B.
Extensiv

e engine idling or low speed driving for long distances
C.
Driving on rough, dus

ty, muddy, unpaved, graveled or salt spread roads
D.
Driving in areas using salt or o

ther corrosive materials or in very cold weather
E.
Driving in heavy dus

t conditions
F.
Driving in heavy tr

affic area
G.
Driving on uphill, downhill, or moun

tain roads repeatedly
H.
Using f

or towing or camping, and driving with loading on the roof
I.
Driving as a patr

ol car, taxi, other commercial use or vehicle towing
J.
Fr

equently driving under high speed or rapid acceleration
K.
Fr

equently driving in stop-and-go conditions
L.
Engine oil usage which is no

t recommended(mineral type, semi-synthetic, lower
grade, etc.)

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