2020 Hyundai Sonata Brake maintenance

08
8-11
Maintenance Under Severe Usage Conditions (Smartstream G1.6 T-GDi)
The following items must be serviced more frequently on cars normally used under
severe driving conditions. Refer to the chart below for the appropriate maintenance
intervals.
R: Replace or change.
I : Inspect and if necessary, adjust, correct, clean or replace.
MAINTENANCE ITEMMAINTENANCE
OPERATION MAINTENANCE
INTERVALS DRIVING
CONDITION
Engine oil and filter RE
very 3,000 miles or
6 months A, B, C, D, E,
F, G, H, I, J, K
Air cleaner filter RMore frequently C, E
Spark plugs RMore frequently A, B, H, I, K
Automatic transmission fluid
(if equipped) R Every 60,000 miles A, C, E, F, G, I
Front brake disc/pads, calipers IMore frequently C, D, G, H
Rear brake shoes or disc/pads IMore frequently C, D, G, F
Parking brake IMore frequently C, D, G, H
Steering gear box, linkage &
boots/ lower arm ball joint,
upper arm ball joint I
More frequently C, D, E, F, G,
H, I
Suspension mounting bolts IMore frequently C, D, E, F, G,
H, I
Drive shafts and boots IEvery 3,000 miles or
6 months C, D, E, F, G,
H, I
Climate control air filter
(for evaporator and blower unit) R
More frequently C, E
Severe Driving Conditions
A. Repeatedly driving short distances
of less than 5 miles (8 km) in normal
temperature or less than 10 miles (16
km) in freezing temperature
B. Extensive engine idling or low speed driving for long distances
C. Driving on rough, dusty, muddy, unpaved, graveled or salt- spread
roads
D. Driving in areas using salt or other corrosive materials or in very cold
weather E. Driving in sandy areas
F. Driving in heavy traffic area over 90°F
(32°C)
G. Driving on uphill, downhill, or mountain road
H. Towing a Trailer, or using a camper, or roof rack
I. Driving as a patrol car, taxi, other commercial use or vehicle towing
J. Driving over 106 mph (170 km/h)
K. Frequently driving in stop-and-go conditions

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.

Maintenance8-14
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
Vapor hose, fuel filler cap and fuel tank IIII I I I
Fuel tank air filter *
3
IIII I I I
Fuel filter *
3
IIII I I I
Fuel lines, hoses and connections I I I
Parking brake IIII I I I
Brake fluid IIII I I I
R: Replace or change.
I : Inspect and if necessary, adjust, correct, clean or replace.*3 : Fuel filter & Fuel tank air filter are considered to be maintenance free but periodic inspection is recommended for this
maintenance schedule depends on fuel quality. If there are some important safety matters like fuel flow restriction, surging,
loss of power, hard starting problem, etc. replace the fuel filter immediately regardless of maintenance schedule and consult an
authorized HYUNDAI dealer for details.

08
8-15
Maintenance Under Severe Usage Conditions (Smartstream G2.5 GDi)
The following items must be serviced more frequently on cars normally used under
severe driving conditions. Refer to the chart below for the appropriate maintenance
intervals.
R: Replace or change.
I : Inspect and if necessary, adjust, correct, clean or replace.
MAINTENANCE ITEMMAINTENANCE
OPERATION MAINTENANCE
INTERVALS DRIVING
CONDITION
Engine oil and filter RE
very 3,750 miles or
6 months A, B, C, D, E,
F, G, H, I, J, K
Air cleaner filter RMore frequently C, E
Spark plugs RMore frequently A, B, H, I, K
Automatic transmission fluid
(if equipped) R Every 60,000 miles A, C, E, F, G, I
Front brake disc/pads, calipers IMore frequently C, D, G, H
Rear brake shoes or disc/pads IMore frequently C, D, G, F
Parking brake IMore frequently C, D, G, H
Steering gear box, linkage &
boots/ lower arm ball joint,
upper arm ball joint I
More frequently C, D, E, F, G,
H, I
Suspension mounting bolts IMore frequently C, D, E, F, G,
H, I
Drive shafts and boots IEvery 3,750 miles or
6 months C, D, E, F, G,
H, I
Climate control air filter
(for evaporator and blower unit) R
More frequently C, E
Severe Driving Conditions
A. Repeatedly driving short distances
of less than 5 miles (8 km) in normal
temperature or less than 10 miles (16
km) in freezing temperature
B. Extensive engine idling or low speed driving for long distances
C. Driving on rough, dusty, muddy, unpaved, graveled or salt- spread
roads
D. Driving in areas using salt or other corrosive materials or in very cold
weather E. Driving in sandy areas
F. Driving in heavy traffic area over 90°F
(32°C)
G. Driving on uphill, downhill, or mountain road
H. Towing a Trailer, or using a camper, or roof rack
I. Driving as a patrol car, taxi, other commercial use or vehicle towing
J. Driving over 106 mph (170 km/h)
K. Frequently driving in stop-and-go conditions

08
8-17
Engine Coolant
The coolant should be changed at the
intervals specified in the maintenance
schedule.
Automatic Transmission Fluid
Automatic transmission fluid should
not be checked under normal usage
conditions. But in severe conditions, the
fluid should be changed at an authorized
HYUNDAI dealer in accordance to the
scheduled maintenance at the beginning
of this chapter.
Information
Automatic transmission fluid color is red
when new.
As the vehicle is driven, the automatic
transmission fluid will begin to look
darker. This is a normal condition and you
should not judge the need to replace the
fluid based upon the changed color.
NOTICE
The use of a non-specified fluid could
result in transmission malfunction
and failure. Use only the specified
automatic transmission fluid (refer
to “Recommended Lubricants and
Capacities” in chapter 2).
Brake Hoses and Lines
Visually check for proper installation,
chafing, cracks, deterioration and any
leakage. Replace any deteriorated or
damaged parts immediately.
Brake Fluid
Check the brake fluid level in the brake
fluid reservoir. The level should be
between the MIN and the MAX marks
on the side of the reservoir. Use only
hydraulic brake fluid conforming to DOT
4 specification.
Parking Brake
Inspect the parking brake system
including the parking brake pedal and
cables.
Brake Discs, Pads, Calipers and
Rotors
Check the pads for excessive wear, discs
for run out and wear, and calipers for
fluid leakage.
Exhaust Pipe and Muffler
Visually inspect the exhaust pipes,
muffler and hangers for cracks,
deterioration, or damage. Start
the engine and listen carefully for
any exhaust gas leakage. Tighten
connections or replace parts as
necessary.

Maintenance8-24
Checking the Brake Fluid Level
ODN8089005ODN8089005
Check the fluid level in the reservoir
periodically. The fluid level should be
between MAX and MIN marks on the side
of the reservoir.
Before removing the reservoir cap and
adding brake fluid, clean the area around
the reservoir cap thoroughly to prevent
brake fluid contamination.
If the level is low, add the specified brake
fluid to the MAX level. The level will fall
with accumulated mileage. This is a
normal condition associated with the
wear of the brake linings. If the fluid level
is excessively low, have the brake system
checked by an authorized HYUNDAI
dealer.
WARNING
If the brake system requires frequent
additions of fluid this could indicate
a leak in the brake system. Have the
vehicle inspected by an authorized
HYUNDAI dealer.
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” in chapter 2).
BRAKE FLUID

Maintenance8-34
WARNING
Tire failure may cause loss of vehicle
control resulting in an accident. To
reduce risk of SERIOUS INJURY or
DEATH, take the following precautions:
• Inspect your tires monthly for proper
inflation as well as wear and damage.
• The recommended cold tire pressure
for your vehicle can be found in this
manual and on the tire label located
on the driver’s side center pillar.
Always use a tire pressure gauge to
measure tire pressure. Tires with
too much or too little pressure wear
unevenly causing poor handling.
• Check the pressure of the spare
every time you check the pressure of
the other tires on your vehicle.
• Replace tires that are worn, show
uneven wear, or are damaged.
Worn tires can cause loss of braking
effectiveness, steering control, or
traction.
• ALWAYS replace tires with the same
type, size, brand, construction and
tread pattern as each tire that was
originally supplied with this vehicle.
Using tires and wheels other than
the recommended sizes could cause
unusual handling characteristics,
poor vehicle control, or negatively
affect your vehicle’s Anti-Lock Brake
System (ABS) resulting in a serious
accident.
Tire Care
For proper maintenance, safety, and
maximum fuel economy, you must
always maintain recommended tire
inflation pressures and stay within the
load limits and weight distribution
recommended for your vehicle.
ODN8H019025LODN8H019025L
All specifications (sizes and pressures)
can be found on a label attached to the
driver’s side center pillar.
Recommended Cold Tire
Inflation Pressures
All tire pressures (including the spare)
should be checked when the tires are
cold. “Cold tires” means the vehicle has
not been driven for at least three hours
or has been driven for less than one mile
(1.6 km).
Warm tires normally exceed
recommended cold tire pressures by 4
to 6 psi (28 to 41 kPa). Do not release air
from warm tires to adjust the pressure
or the tires will be under-inflated. For
recommended inflation pressure, refer to
“Tire and Wheels” in chapter 2.
TIRES AND WHEELS

Maintenance8-36
Tire Rotation
To equalize tread wear, HYUNDAI
recommends that the tires be rotated
according to the maintenance schedule
or sooner if irregular wear develops.
During rotation, check the tires for
correct balance.
When rotating tires, check for uneven
wear and damage. Abnormal wear is
usually caused by incorrect tire pressure,
improper wheel alignment, out-of-
balance wheels, severe braking or severe
cornering. Look for bumps or bulges in
the tread or side of the tire. Replace the
tire if you find any of these conditions.
Replace the tire if fabric or cord is visible.
After rotation, be sure to bring the front
and rear tire pressures to specification
and check lug nut tightness (proper
torque is 79~94 lbf·ft [11~13 kgf·m]).
Without a spare tireWithout a spare tire
ODH073802ODH073802
Disc brake pads should be inspected for
wear whenever tires are rotated.
Information
Tires that are asymmetrical or directional
can only be installed on the wheel in
one direction. The outside and inside
of an asymmetrical tire is not easily
distinguishable. Pay careful attention to
the markings on the sidewalls of the tires,
noting the “outside” marking and also the
rotating direction before installing them
on the vehicle.
WARNING
• Do not use the compact spare tire for
tire rotation.
• Do not mix bias ply and radial ply
tires under any circumstances.
This may cause unusual handling
characteristics that may cause loss
of vehicle control resulting in an
accident.
Wheel Alignment and Tire
Balance
The wheels on your vehicle were aligned
and balanced carefully at the factory to
give you the longest tire life and best
overall performance.
In most cases, you will not need to have
your wheels aligned again. However,
if you notice unusual tire wear or your
vehicle pulling one way or the other, the
alignment may need to be reset.
If you notice your vehicle vibrating when
driving on a smooth road, your wheels
may need to be rebalanced.
NOTICE
Improper wheel weights can damage
your vehicle’s aluminum wheels. Use
only approved wheel weights.