2021 HYUNDAI SONATA HYBRID washer fluid

8-3
08
„„Smartstream G2.0 GDi HEV
The actual engine compartment in the vehicle may differ from the illustration.
ODN8H089001
1. Engine coolant reservoir
2. Engine coolant reservoir cap
3. Inverter coolant reservoir
4. Brake fluid reservoir
5. Air cleaner
6. Engine oil dipstick
7. Engine oil filler cap
8. Windshield washer fluid reservoir
9. Fuse box
ENGINE COMPARTMENT

08
8-5
WARNING
Performing maintenance work on a
vehicle can be dangerous. If you lack
sufficient knowledge and experience or
the proper tools and equipment to do
the work, have it done by an authorized
HYUNDAI dealer.
ALWAYS follow these precautions for
performing maintenance work:
• Park your vehicle on level ground,
shift the gear to P (Park), apply
the parking brake, and press the
Engine Start/Stop button to the OFF
position.
• Block the tires (front and back) to
prevent the vehicle from moving.
Remove loose clothing or jewelry
that can become entangled in
moving parts.
• If you must run the engine during
maintenance, do so out doors or in
an area with plenty of ventilation.
• Keep flames, sparks, or smoking
materials away from the battery and
fuel-related parts. The following lists are vehicle checks and
inspections that should be performed
by the owner or an authorized HYUNDAI
dealer at the frequencies indicated to
help ensure safe, dependable operation
of your vehicle.
Any adverse conditions should be
brought to the attention of your dealer as
soon as possible.
These Owner Maintenance vehicle
checks are generally not covered by
warranties and you may be charged for
labor, parts and lubricants used.
Owner Maintenance Schedule
When you stop for fuel:
•
Check the engine oil level.
• Check the coolant level in the engine
coolant reservoir.
• Check the windshield washer fluid
level.
• Check for low or under-inflated tires.
WARNING
Be careful when checking your engine
coolant/inverter 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.
OWNER MAINTENANCE

Maintenance
8-6
While operating your vehicle:
• Note any changes in the sound of the
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 looseness in the
steering wheel, or change in its
straight-ahead position.
• 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 engine
coolant 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.
At least twice a year: (i.e., every
Spring and Autumn)
• Check radiator, heater and air
conditioning hoses for leaks or
damage.
• Check windshield washer spray and
wiper operation. Clean wiper blades
with a clean cloth dampened with
washer fluid.
• Check headlamp alignment.
• Check muffler, exhaust pipes, shields
and clamps.
• Check the seat belts for wear and
function.
At least once a year:
• Clean body and door drain holes.
• Lubricate door hinges and hood
hinges.
• Lubricate door and hood locks and
latches.
• Lubricate door rubber weather strips.
• Check the air conditioning system.
• Inspect and lubricate automatic
transmission linkage and controls.
• Clean the battery and terminals.
• Check the brake fluid level.

08
8-19
Recommended coolant
• When adding coolant, use only
deionized water, distilled water or soft
water for your vehicle and never mix
hard water in the coolant filled at the
factory.
• An incorrect coolant mixture can
result in severe malfunction or
engine/hybrid system damage.
• The engine in your vehicle has
aluminum engine parts and must be
protected by an phosphate-based
ethylene glycol coolant to prevent
corrosion and freezing.
• Do not use alcohol or methanol
coolant or mix them with the specified
coolant.
• Do not use a solution that contains
more than 60% antifreeze or less than
35% antifreeze, which would reduce
the effectiveness of the solution.
For mixing percentage, refer to the
following table:
Ambient
Temperature Mixture Percentage
(volume)
Antifreeze Water
5°F (-15°C) 3565
-13°F (-25°C) 4060
-31°F (-35°C) 5050
-49°F (-45°C) 6040
Information
If in doubt about the mix ratio, a 50%
water and 50% antifreeze mix is the
easiest to mix together as it will be the
same quantity of each. It is suitable to
use for most temperature ranges of -31°F
(-35°C) and higher.
Changing Coolant
Have coolant changed by an authorized
HYUNDAI dealer according to the
Maintenance Schedule at the beginning
of this chapter.
WARNING
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.
Engine coolant may also cause damage
to paint and body trim.
NOTICE
To prevent damage to engine parts, put
a thick towel around the engine coolant
cap and/or inverter coolant cap before
refilling the coolant to prevent the
coolant from overflowing into engine
parts, such as the alternator.

08
8-21
WASHER FLUID
Checking the Washer Fluid Level
ODN8H089006
Check the fluid level in the washer fluid
reservoir and add fluid if necessary. Plain
water may be used 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
Child-protector rear door lock ........................................................................\
....5-33
Climate control additional features
....................................................................5-117
Automatic ventilation
........................................................................\
............5-117
Sunroof inside air recirculation
.....................................................................5-117
Smart seat warmer/air ventilation seat
.........................................................5-117
Washer fluid logic
........................................................................\
................5-117
Clock
........................................................................\
.........................................5-124
Clothes hanger
........................................................................\
..........................5-124
Coasting guide
........................................................................\
.............................6-17
Consumer information
........................................................................\
.................1-10
Cup holder
........................................................................\
.................................5-119
D
Daytime running light (DRL)
........................................................................\
......5-72
Declaration of conformity ........................................................................\
............ 6-77
Defroster
........................................................................\
...................................5-117
Dimensions
........................................................................\
...................................2-7
Door locks
........................................................................\
...................................5-28
Operating door locks from outside the vehicle
..............................................5-28
Central door lock/unlock switch
....................................................................5-30
Auto door lock/unlock features
......................................................................5-31
Rear Occupant Alert (ROA) system
...............................................................5-32
Child-protector rear door lock
........................................................................\
5-33
Vehicle Auto-Shut Off Function
.....................................................................5-33
Drive mode integrated control system
.................................................................6-33
Drive mode
........................................................................\
.............................6-33
Drive mode on trip computer
........................................................................\
..6-37
Driver Attention Warning (DAW)
......................................................................6-78
Leading vehicle departure alert
......................................................................6-83
Driver position memory system ........................................................................\
... 5-35
Storing positions into memory
.......................................................................5-35
Easy access function
........................................................................\
..............5-37
Driving at night
........................................................................\
.........................6-133
Driving in flooded areas
........................................................................\
...........6-134
Driving in the rain
........................................................................\
.....................6-133
Driving the hybrid vehicle
........................................................................\
...........1-13

I
I -7
Exterior features........................................................................\
........................... 5-62
Hood
........................................................................\
.......................................5-62
Trunk
........................................................................\
......................................5-63
Emergency trunk safety release ....................................................................... 5-64
Fuel Filler Door
........................................................................\
......................5-68
Exterior overview
........................................................................\
..........................2-2
Front view
........................................................................\
................................2-2
Rear view
........................................................................\
.................................2-3
F
Flat tire
........................................................................\
........................................7-14
Changing spare tire
........................................................................\
.....................7-15
Floor mat anchor(s) ........................................................................\
.................... 5-125
Fluid
........................................................................\
...................................................-
Brake fluid
........................................................................\
..............................8-20
Washer fluid
........................................................................\
...........................8-21
Forward Collision-Avoidance Assist (FCA)
.......................................................6-38
Junction Turning ........................................................................\
...................... 6-53
Forward/Reverse Parking Distance Warning (PDW)
.........................................5-91
Front seat adjustment
........................................................................\
....................3-5
Manual adjustment
........................................................................\
...................3-5
Power adjustment
........................................................................\
.....................3-7
Reclining seatback
........................................................................\
...................3-8
Front seat head restraints
........................................................................\
.............3-12
Adjusting the height up and down
.................................................................3-12
Removal/Reinstallation
........................................................................\
..........3-13
Fuel Filler Door
........................................................................\
..........................5-69
Fuel gauge
........................................................................\
.....................................4-4
Fuel requirements
........................................................................\
..........................1-5
Fuel additives
........................................................................\
...........................1-6
Fuses
........................................................................\
...........................................8-38
Instrument panel fuse replacement .................................................................. 8-39
Engine compartment panel fuse replacement
................................................8-40
Fuse/relay panel description
........................................................................\
...8-41

I
I-11
LCD display (Type C) ........................................................................\
................4-39
LCD display control
........................................................................\
...............4-39
View modes
........................................................................\
............................4-40
Utility view mode
........................................................................\
...................4-41
Option menu
........................................................................\
...........................4-43
User settings mode
........................................................................\
.................4-44
LCD display messages
........................................................................\
................4-19
Shift to P to start engine
........................................................................\
..........4-19
Shift to P
........................................................................\
.................................4-19
Low key battery ........................................................................\
....................... 4-19
Press brake pedal to start engine
....................................................................4-19
Key not in vehicle
........................................................................\
..................4-19
Key not detected
........................................................................\
.....................4-19
Press START button again
........................................................................\
.....4-19
12V bettery discharging due to additional electrical devices
..........................4-19
Press START button with key
........................................................................\
4-20
Check BRAKE SWITCH fuse
.......................................................................4-20
Door, Hood, Trunk open indicator
.................................................................4-20
Sunroof open indicator
........................................................................\
...........4-20
Press START button while turning wheel
.......................................................4-20
Check steering wheel lock system
..................................................................4-20
Lights mode
........................................................................\
............................4-21
Wiper mode
........................................................................\
............................4-21
Low pressure
........................................................................\
..........................4-21
Low washer fluid ........................................................................\
..................... 4-21
Low fuel
........................................................................\
..................................4-21
Engine has overheated ........................................................................\
............. 4-21
Check exhaust system
........................................................................\
.............4-22
Check headlight
........................................................................\
.......................4-22
Check turn signal ........................................................................\
..................... 4-22
Check brake light
........................................................................\
....................4-22
Check headlamp LED
........................................................................\
.............4-22
Check Active Air Flap system
........................................................................\
.4-22