2020 Hyundai Sonata Maintenance brakes

01
1 -7
Detergent Fuel Additives
HYUNDAI recommends that you use
good quality gasolines treated with
detergent additives such as TOP TIER
Detergent Gasoline, which help prevent
deposit formation in the engine. These
gasolines will help the engine run
cleaner and enhance performance of
the Emission Control System. For more
information on TOP TIER Detergent
Gasoline, please go to the website (www.
toptiergas.com ).
For customers who do not use TOP Tier
Detergent Gasoline regularly, and have
problems starting or the engine does
not run smoothly, detergent-based
fuel additives that you can purchase
separately may be added to the gasoline.
If TOP TIER Detergent Gasoline is
not available, one bottle of additive
added to the fuel tank according to the
maintenance schedule is recommended
(refer to the Maintenance Schedule in
chapter 8).
Additives are available from your
authorized HYUNDAI dealer along with
information on how to use them. Do not
mix other additives.
Operation in foreign countries
If you are going to drive your vehicle in
another country, be sure to:
• Observe all regulations regarding
registration and insurance.
• Determine that acceptable fuel is
available. •
This vehicle should not be modified.
Modification of your vehicle could
affect its performance, safety or
durability and may even violate
governmental safety and emissions
regulations.
In addition, damage or performance
problems resulting from any
modification may not be covered
under warranty.
• If you use unauthorized electronic
devices, it may cause the vehicle to
operate abnormally, wire damage,
battery discharge and fire. For your
safety, do not use unauthorized
electronic devices.
VEHICLE BREAK-IN
PROCESS
By following a few simple precautions for
the first 600 miles (1,000 km) you may
add to the performance, economy and
life of your vehicle.
• Do not race the engine.
• While driving, keep your engine speed
(rpm, or revolutions per minute)
between 2,000 rpm and 4,000 rpm.
• Do not maintain a single speed for
long periods of time, either fast or
slow. Varying engine speed is needed
to properly break-in the engine.
• Avoid hard stops, except in
emergencies, to allow the brakes to
seat properly.
VEHICLE MODIFICATIONS

08
8-7
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 short distance driving.
• Driving in dusty conditions or sandy areas.
• Extensive use of brakes.
• Driving in areas where salt or other corrosive materials are used.
• Driving on rough or muddy roads.
• Driving in mountainous areas.
• Extended periods of idling or low speed operation.
• Driving for a prolonged period in cold temperatures and/or extremely humid climates.
• More than 50% driving in heavy city traffic during hot weather above 90°F (32°C).
For additional information or assistance see your authorized HYUNDAI dealer.
SCHEDULED MAINTENANCE SERVICES

08
8-9
Normal Maintenanc e Schedule (Smartstream G1.6 T-GDi) (CONT)
MAINTENANCE INTERVALS
MAINTENANCE
ITEM Months 12 24 36 48 60 72 84 96 108 120 132 144 156 168 180
Miles×1,000 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 Km×1,000 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
Battery condition I I I I I I I I IIIIII I
Brake lines, hoses and connections I I I I I I I I IIIIII I
Disc brakes and pads I I I I I I I I IIIIII I
Driveshaft and boots I I I I I I I I IIIIII I
Suspension mounting bolts I I I I I I I I IIIIII I
Air conditioner refrigerant I I I I I I I I IIIIII I
Air conditioner compressor I I I I I I I I IIIIII I
Exhaust pipe and muffler I I I I I I I I IIIIII I
Automatic transmission fluid (if equipped) No check, No service requiredR: Replace or change.
I : Inspect and if necessary, adjust, correct, clean or replace.

08
8-13
Normal Maintenance Schedule (Smartstream G2.5 GDi) (CONT)
MAINTENANCE INTERVALS
MAINTENANCE
ITEM Months 12 24 36 48 60 72 84 96 108 120 132 144 156 168 180
Miles×1,000 7.5 15 22.5 30 37.5 45 52.5 60 67.5 75 82.5 90 97.5 105 112.5 Km×1,000 12 24 36 48 60 72 84 96 108 120 132 144 156 168 180
Battery condition I I I I I I I I IIIIII I
Brake lines, hoses and connections I I I I I I I I IIIIII I
Disc brakes and pads I I I I I I I I IIIIII I
Driveshaft and boots I I I I I I I I IIIIII I
Suspension mounting bolts I I I I I I I I IIIIII I
Air conditioner refrigerant I I I I I I I I IIIIII I
Air conditioner compressor I I I I I I I I IIIIII I
Exhaust pipe and muffler I I I I I I I I IIIIII I
Automatic transmission fluid (if equipped) No check, No service required
Steering gear rack, linkage and boots II IR: Replace or change.
I : Inspect and if necessary, adjust, correct, clean or replace.

08
8-63
Repairing your vehicle’s finish
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,
we recommend that you 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 bright metal 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.

I
I-3
Mode selection ........................................................................\
...................... 5-130
Instrument panel vents ........................................................................\
.......... 5-132
Temperature control ........................................................................\
.............. 5-132
Air intake control ........................................................................\
.................. 5-133
Fan speed control ........................................................................\
.................. 5-134
Air conditioning ........................................................................\
.................... 5-134
OFF mode........................................................................\
.............................. 5-134
System operation ........................................................................\
................... 5-135
System maintenance ........................................................................\
.............. 5-136
Air conditioning refrigerant label......................................\
............................ 5-137
Automatic transmission ........................................................................\
............... 6-13 Transmission ranges ........................................................................\
................ 6-14
Paddle shifter (manual shift mode) ................................................................. 6-19
Shift-lock system ........................................................................\
..................... 6-15
Good driving practices ........................................................................\
............ 6-18
Parking ................................................................\
............................................ 6-16
Automatic ventilation ........................................................................\
................ 5-143
AUX, USB and iPod
® port ........................................................................\
........ 5-152
B
Battery ................................................................\
................................................. 8-31 Battery recharging ........................................................................\
................... 8-32
Battery saver function ........................................................................\
.................. 5-79
Before driving ........................................................................\
................................ 6-5
Blind-Spot Collision Warning (BCW) ................................................................. 6-67
Blind-Spot Collision-Avoidance Assist (BCA) ................................................... 6-67
Blind-Spot View Monitor (BVM) ....................................................................... 6-87
Blue Link
® center ........................................................................\
....................... 5-154
Bluetooth® Wireless Technology hands-free ..................................................... 5-154
Brake fluid ........................................................................\
................................... 8-24
Brake system ........................................................................\
................................ 6-20 Power brakes ........................................................................\
........................... 6-20
Disc brakes wear indicator ........................................................................\
...... 6-20
Electronic Parking Brake (EPB) ..................................................................... 6-21
Auto Hold ........................................................................\
................................ 6-24
Anti-lock Brake System (ABS) ....................................................................... 6-27
Electronic Stability Control (ESC)....................................\
.............................. 6-29
Vehicle Stability Management (VSM) ............................................................ 6-31
Good braking practices ........................................................................\
........... 6-32

IndexI-12
Manual climate control system ........................................................................\
.. 5-118 Heating and air conditioning ........................................................................\
. 5-119
Mode selection ........................................................................\
...................... 5-120
Instrument panel vents ........................................................................\
.......... 5-122
Temperature control ........................................................................\
.............. 5-122
Air intake control ........................................................................\
.................. 5-122
Fan speed control ........................................................................\
.................. 5-123
Air conditioning ........................................................................\
.................... 5-123
System operation ........................................................................\
................... 5-124
System maintenance ........................................................................\
.............. 5-125
Air conditioning refrigerant label......................................\
............................ 5-126
Mirrors ................................................................\
................................................. 5-46
Inside rearview mirror ........................................................................\
............. 5-46
HomeLink
® system.................................................................\
......................... 5-47
Side view mirrors ........................................................................\
.................... 5-53
Adjusting the side view mirrors ...................................................................... 5-54
Folding the side view mirrors ........................................................................\
. 5-54
Reverse parking aid function ........................................................................\
.. 5-55
N
Navigation-based Smart Cruise Control (NSCC) .............................................. 6-105
O
Occupant Classification System (OCS) ............................................................... 3-47
Odometer ...............................................................\
................................................ 4-5
Oil (Engine) ........................................................................\
................................. 8-19
Outside temperature gauge ........................................................................\
............ 4-5
Owner maintenance ........................................................................\
....................... 8-5
P
Panoramic sunroof ........................................................................\
....................... 5-60
Parking lamp position ........................................................................\
.................. 5-75
Passenger’s front air bag ........................................................................\
.............. 3-39
Power brakes ........................................................................\
................................ 6-20
Power outlet ........................................................................\
............................... 5-146
Power window lock switch ........................................................................\
.......... 5-59
Pre-tensioner seat belt ........................................................................\
.................. 3-24 Retractor pretensioner ........................................................................\
............. 3-24