2020 HYUNDAI SONATA HYBRID maintenance

Maintenance
8-52
Finish damage repair
Deep scratches or stone chips in the
painted surface must be repaired
promptly. Exposed metal will quickly
rust and may develop into a major repair
expense.
NOTICE
If your vehicle is damaged and requires
any metal repair or replacement,
be sure the body shop applies anti-
corrosion materials to the parts
repaired or replaced.
NOTICE
Matte paint finish vehicle (if equipped)
In case of matte paint finish vehicles,
it is impossible to modify only the
damaged area and repair of the whole
part is necessary. If the vehicle is
damaged and painting is required, have
your vehicle maintained and repaired
by an authorized HYUNDAI dealer. Take
extreme care, as it is difficult to restore
the quality after the repair.
Bright-metal maintenance
• To remove road tar and insects, use
a tar remover, not a scraper or other
sharp object.
• To protect the surfaces of brightmetal
parts from corrosion, apply a coating
of wax or chrome preservative and rub
to a high luster.
• During winter weather or in coastal
areas, cover the bright metal parts
with a heavier coating of wax or
preservative. If necessary, coat the
parts with non-corrosive petroleum
jelly or other protective compound.
Underbody maintenance
Corrosive materials used for ice and
snow removal and dust control may
collect on the underbody. If these
materials are not removed, accelerated
rusting can occur on underbody parts
such as the fuel lines, frame, floor pan
and exhaust system, even though they
have been treated with rust protection.
Thoroughly flush the vehicle underbody
and wheel openings with lukewarm or
cold water once a month, after off-road
driving and at the end of each winter. Pay
special attention to these areas because
it is difficult to see all the mud and dirt.
It will do more harm than good to wet
down the road grime without removing
it. The lower edges of doors, rocker
panels, and frame members have drain
holes that should not be allowed to clog
with dirt; trapped water in these areas
can cause rusting.
WARNING
After washing the vehicle, test the
brakes while driving slowly to see if
they have been affected by water. If
braking performance is impaired, dry
the brakes by applying them lightly
while maintaining a slow forward
speed.
Aluminum wheel maintenance
The aluminum wheels are coated with a
clear protective finish.

Maintenance
8-54
To help prevent corrosion
Keep your vehicle clean
The best way to prevent corrosion is
to keep your vehicle clean and free of
corrosive materials. Attention to the
underside of the vehicle is particularly
important.
• If you live in a high-corrosion area —
where road salts are used, near the
ocean, areas with industrial pollution,
acid rain, etc.—, you should take extra
care to prevent corrosion. In winter,
hose off the underside of your vehicle
at least once a month and be sure to
clean the underside thoroughly when
winter is over.
• When cleaning underneath the
vehicle, pay particular attention to the
components under the fenders and
other areas that are hidden from view.
Do a thorough job; just dampening
the accumulated mud rather than
washing it away will accelerate
corrosion rather than prevent it. Water
under high pressure and steam are
particularly effective in removing
accumulated mud and corrosive
materials.
• When cleaning lower door panels,
rocker panels and frame members, be
sure that drain holes are kept open so
that moisture can escape and not be
trapped inside to accelerate corrosion. Keep your garage dry
Don’t park your vehicle in a damp,
poorly ventilated garage. This creates
a favorable environment for corrosion.
This is particularly true if you wash your
vehicle in the garage or drive it into the
garage when it is still wet or covered with
snow, ice or mud. Even a heated garage
can contribute to corrosion unless it is
well ventilated so moisture is dispersed.
Keep paint and trim in good condition
Scratches or chips in the finish should
be covered with “touch-up” paint as
soon as possible to reduce the possibility
of corrosion. If bare metal is showing
through, the attention of a qualified body
and paint shop is recommended.
Bird droppings are highly corrosive and
may damage painted surfaces in just a
few hours. Always remove bird droppings
as soon as possible.
Interior Care
Interior general precautions
Prevent caustic solutions such as
perfume and cosmetic oil, from
contacting the interior parts because
they may cause damage or discoloration.
If they do contact the interior parts,
wipe them off immediately. See the
instructions for the proper way to clean
vinyl.

Maintenance
8-56
• Caring for the leather seats
-Vacuum the seat periodically to
remove dust and sand on the seat. It
will prevent abrasion or damage of
the leather and maintain its quality.
-Wipe the natural leather seat cover
often with dry or soft cloth.
-Use of proper leather protector may
prevent abrasion of the cover and
helps maintain the color. Be sure to
read the instructions and consult
a specialist when using leather
coating or protective agent.
-Light colored (beige, cream beige)
leather is easily contaminated and
the stain is noticeable. Clean the
seats frequently.
-Avoid wiping with wet cloth. It may
cause the surface to crack.
• Cleaning the leather seats
-Remove all contaminations
instantly. Refer to instructions below
for removal of each contaminant.
-Cosmetic products (sunscreen,
foundation, etc.)
Apply cleansing cream on a cloth
and wipe the contaminated spot.
Wipe off the cream with a wet cloth
and remove water with a dry cloth.
-Beverages (coffee, soft drink, etc.)
Apply a small amount of neutral
detergent and wipe until
contaminations do not smear.
-Oil
Remove oil instantly with
absorbable cloth and wipe with
stain remover used only for natural
leather.
-Chewing gum
Harden the gum with ice and
remove gradually.
Cleaning the seat belt webbing
Clean the belt webbing with any
mild soap solution recommended for
cleaning upholstery or carpet. Follow
the instructions provided with the soap.
Do not bleach or re-dye the webbing
because this may weaken the seat belt.
Cleaning the interior window glass
If the interior glass surfaces of the
vehicle become fogged (that is, covered
with an oily, greasy or waxy film), they
should be cleaned with glass cleaner.
Follow the directions on the glass cleaner
container.
NOTICE
Do not scrape or scratch the inside of
the rear window. This may result in
damage to the rear window defroster
grid.

08
8-57
The emission control system of your
vehicle is covered by a written limited
warranty. Please see the warranty
information contained in the Owner’s
Handbook & Warranty Information
booklet in your vehicle.
Your vehicle is equipped with an
emission control system to meet all
applicable emission regulations. There
are three emission control systems, as
follows.
(1) Crankcase emission control system
(2) Evaporative emission control system
(3) Exhaust emission control system
In order to ensure the proper function
of the emission control systems, it
is recommended that you have your
vehicle inspected and maintained
by an authorized HYUNDAI dealer in
accordance with the maintenance
schedule in this manual.
NOTICE
For the Inspection and Maintenance
Test (with Electronic Stability Control
(ESC) system)
• To prevent the vehicle from misfiring
during dynamometer testing, turn
the Electronic Stability Control
(ESC) system off by pressing the ESC
switch (ESC OFF light illuminated).
• After dynamometer testing is
completed, turn the ESC system back
on by pressing the ESC switch again.
1. Crankcase Emission Control
System
The positive crankcase ventilation system
is employed to prevent air pollution
caused by blow-by gases being emitted
from the crankcase. This system supplies
fresh filtered air to the crankcase through
the air intake hose. Inside the crankcase,
the fresh air mixes with blow-by gases,
which then pass through the PCV valve
into the induction system.
2. Evaporative Emission Control
System Including Onboard
Refueling Vapor Recovery
(ORVR)
The Evaporative Emission Control System
is designed to prevent fuel vapors from
escaping into the atmosphere. The
ORVR system is designed to allow the
vapors from the fuel tank to be loaded
into a canister while refueling at the gas
station, preventing the escape of fuel
vapors into the atmosphere.
Canister
Fuel vapors generated inside the fuel
tank are absorbed and stored in the
onboard canister. When the engine is
running, the fuel vapors absorbed in the
canister are drawn into the surge tank
through the purge control solenoid valve.
Purge Control Solenoid Valve (PCSV)
The purge control solenoid valve
is controlled by the Engine Control
Module (ECM); when the engine coolant
temperature is low during idling, the
PCSV closes so that evaporated fuel
is not taken into the engine. After the
engine warms-up during ordinary
driving, the PCSV opens to introduce
evaporated fuel to the engine.
EMISSION CONTROL SYSTEM

Maintenance
8-58
3. Exhaust Emission Control
System
The Exhaust Emission Control System is
a highly effective system which controls
exhaust emissions while maintaining
good vehicle performance.
When the engine starts or fails to start,
excessive attempts to restart the engine
may cause damage to the emission
system.
Engine exhaust (carbon monoxide)
precautions
• Carbon monoxide can be present
with other exhaust fumes. If you smell
exhaust fumes of any kind in your
vehicle, drive with all the windows
fully open. Have your vehicle checked
and repaired immediately.
WARNING
Engine exhaust gases contain carbon
monoxide (CO). Though colorless and
odorless, it is dangerous and could be
lethal if inhaled. Follow the instructions
on this page to avoid CO poisoning.
WARNING
CALIFORNIA PROPOSITION 65
WARNING
Engine exhaust and a wide variety of
automobile components and parts,
including components found in the
interior furnishings in a vehicle, contain
or emit chemicals known to the State
of California to cause cancer and
birth defects and reproductive harm.
In addition, certain fluids contained
in vehicles and certain products of
component wear contain or emit
chemicals known to the State of
California to cause cancer and birth
defects or other reproductive harm.
• Do not operate the engine in confined
or closed areas (such as garages) any
more than what is necessary to move
the vehicle in or out of the area.
• When the vehicle is stopped in an
open area for more than a short time
with the engine running, adjust the
ventilation system (as needed) to draw
outside air into the vehicle.
• Never sit in a parked or stopped
vehicle for any extended time with the
engine running.
• When the engine stalls or fails to
start, excessive attempts to restart
the engine may cause damage to the
emission control system.

I
I-3
Automatic climate control system ....................................................................5-101
Automatic heating and air conditioning
........................................................5-102
Manual temperature control mode
................................................................5-103
Mode selection
........................................................................\
......................5-104
Instrument panel vents
........................................................................\
..........5-106
Temperature control
........................................................................\
..............5-106
Air intake control
........................................................................\
..................5-107
Fan speed control
........................................................................\
..................5-108
Driver only
........................................................................\
............................6-108
Air conditioning
........................................................................\
....................5-109
OFF mode ........................................................................\
.............................. 5-109
System operation
........................................................................\
...................5-109
System maintenance
........................................................................\
...............5-111
Air conditioning refrigerant label .................................................................. 5-112
Automatic transmission
........................................................................\
...............6-10
Shift-lock system
........................................................................\
.....................6-12
Parking
........................................................................\
....................................6-13
Good driving practices
........................................................................\
............6-15
Paddle shifter (manual shift mode)
.................................................................6-16
USB and iPod® port ........................................................................\
...................5-126
B
Battery saver function
........................................................................\
..................5-77
Before driving
........................................................................\
................................6-5
Blind-Spot Collision Warning (BCW)
.................................................................6-65
Blind-Spot Collision-Avoidance Assist (BCA)
...................................................6-65
Blind-Spot View Monitor (BVM)
.......................................................................6-86
Blue Link® center
........................................................................\
.....................5-128
Bluetooth® Wireless Technology hands-free
....................................................5-128
Brake fluid
........................................................................\
...................................8-20
Brake system
........................................................................\
................................6-18
Power brakes
........................................................................\
..........................6-18
Disc brakes wear indicator
........................................................................\
.....6-19
Electronic Parking Brake (EPB)
....................................................................6-19
Auto Hold
........................................................................\
...............................6-24
Anti-lock Brake System (ABS)
......................................................................6-27

Index
I-6
E
Electric Power Steering (EPS)
........................................................................\
....5-38
Electronic Stability Control (ESC)
.....................................................................6-28
Emergency towing
........................................................................\
......................7-28
Emergency trunk safety release
........................................................................\
..5-64
Emission control system
........................................................................\
.............8-57
Crankcase emission control system
...............................................................8-57
Evaporative emission control System
............................................................8-57
Exhaust emission control system
...................................................................8-58
Energy flow
........................................................................\
.................................1-20
Engine only propulsion
........................................................................\
..........1-20
EV propulsion
........................................................................\
........................1-20
Power assist
........................................................................\
.............................1-20
Vehicle stop
........................................................................\
............................1-20
Engine brake ........................................................................\
............................ 1-21
Engine generation ........................................................................\
.................... 1-21
Power reserve
........................................................................\
..........................1-21
Regeneration
........................................................................\
..........................1-21
Engine brake/regeneration
........................................................................\
.....1-22
Engine generation/motor drive
........................................................................\
1-22
Engine generation/regeneration
.....................................................................1-22
Start engine to avoid battery discharge
..........................................................1-22
Engine compartment
........................................................................\
.....................2-6
Engine compartment panel fuse replacement
.....................................................8-40
Engine coolant
........................................................................\
............................8-17
Engine number
........................................................................\
............................2-14
Engine oil
........................................................................\
....................................8-15
Engine specification ........................................................................\
....................... 2-7
Engine Start/Stop button
........................................................................\
................6-6
Event Data Recorder (EDR)
........................................................................\
..........1-8
Explanation of scheduled maintenance items
.....................................................8-13

I
I-13
M
Maintenance
........................................................................\
.......................................-
Maintenance services
........................................................................\
...............8-4
Owner maintenance
........................................................................\
..................8-5
Scheduled maintenance services
......................................................................8-7
Normal maintenance schedule
........................................................................\
.8-8
Maintenance under severe usage conditions
..................................................8-11
Explanation of scheduled maintenance items
................................................8-13
Tire maintenance
........................................................................\
....................8-30
Maintenance services
........................................................................\
....................8-4
Mirrors
........................................................................\
........................................5-42
Inside rearview mirror
........................................................................\
............5-42
HomeLink® system
........................................................................\
................5-43
Side view mirrors
........................................................................\
...................5-49
Adjusting the side view mirrors
.....................................................................5-49
Folding the side view mirrors
........................................................................\
5-50
Reverse parking aid function
........................................................................\
.5-50
N
Navigation-based Smart Cruise Control (NSCC)
..............................................6-104
O
Occupant Classification System (OCS)
..............................................................3-47
Odometer
........................................................................\
......................................4-5
Oil (Engine)
........................................................................\
................................8-15
Outside temperature gauge
........................................................................\
...........4-7
Owner maintenance
........................................................................\
......................8-5