transmission fluid HYUNDAI SONATA 2021 Owners Manual

02
2-11
rECommE n DED lu B ri Cant s an D Ca PaC iti E s
To help achieve proper engine and powertrain performance and durability, use only
lubricants of the proper quality. The correct lubricants also help promote engine
efficiency that results in improved fuel economy.
These lubricants and fluids are recommended for use in your vehicle.
LubricantVolumeClassification
Engine oil
*1
(drain and refill) Smartstream
G1.6 T-GDi 5.07
US qt. (4.8 ℓ)
S

AE 0W-20, API SN PLUS/SP or
ILSAC GF-6
Smartstream G2.5 GDi 5.49 US qt. (5.2 ℓ)
Automatic transmission fluid 6.89 US qt. (6.5ℓ) MICHANG ATF SP-IV, SK ATF SP IV,
NOCA ATF SP-IV, S-oil ATF SP-IV
HYUNDAI genuine ATF SP-IV
or other brands meeting the
above specification approved by
HYUNDAI Motor Co.
Coolant Smartstream
G1.6 T-GDi 4.76 US qt. (4.5 ℓ)
Mixture of antifreeze and distilled
water (Ethylene glycol base
coolant for aluminum radiator)
Smartstream
G2.5 GDi 5.49 US qt. (5.2 ℓ)
Brake fluid
*20.74 ~ 0.85 US qt. (0.7 ~ 0.8 ℓ) DOT-4
Fuel 15.85 US gal. (60 ℓ)
14.79 US gal. (56 ℓ) (for ECO package model) Refer to “Fuel requirements” in
chapter 1.
*1 : Refer to the recommended SAE viscosity numbers on page 12.
*2 : To maintain the best braking performance and ABS/ESC performance, we recommend
that you use genuine brake fluid that conform to specifications. (Standard : SAE J1704
DOT-4 LV, ISO4925 CLASS-6 and FMVSS 116 DOT-4)

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 brake lights, 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 a 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.
• Lubricate door checker.
• Check the air conditioning system.
• Inspect and lubricate automatic
transmission linkage and controls.
• Clean the battery and terminals.
• Check the brake fluid level.

08
8-9
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
Miles×1,000 8 16 24 32 40 48 56 64 72 80 88 96 104 Km×1,000 13 26 39 52 65 78 91 104 117 130 143 156 169
Battery condition I I I I I I I I I I I I I
Brake lines, hoses and connections I I I I I I I I I I I I I
Disc brakes and pads I I I I I I I I I I I I I
Driveshaft and boots I I I I I I I I I I I I I
Suspension mounting bolts I I I I I I I I I I I I I
Air conditioner refrigerant I I I I I I I I I I I I I
Air conditioner compressor I I I I I I I I I I I I I
Exhaust pipe and muffler I I I I I I I I I I I I I
Automatic transmission fluid No check, No service requiredR: Replace or change.
I : Inspect and if necessary, adjust, correct, clean or replace.

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 *
1R Every 5,000 miles or
6 months A, B, C, D, E, F,
G, H, I, J, K, L
Air cleaner filter RMore frequently C, E
Spark plugs RMore frequently A, B, H, I, K
Automatic transmission fluid R Every 60,000 miles A, C, E, F, G, I
Front brake disc/pads, calipers I More 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
*1 : Requires grade engine oil. If a lower grade
engine oil (mineral oil including Semi-synthetic) is used, then the engine oil and engine
oil filter must be replaced as indicated for severe maintenance condition.
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.

Ext
ensive engine idling or low speed
driving for long distances
C.
Driving on r

ough, dusty, muddy,
unpaved, graveled or salt- spread
roads
D.
Driving in ar

eas using salt or other
corrosive materials or in very cold
weather
E.

Driving in sandy ar
eas F.
Driving in hea

vy traffic area over 90°F
(32°C)
G. Driving on uphill, do wnhill, or
mountain road
H.

T
owing a Trailer, or using a camper, or
roof rack
I.

Driving as a pa
trol car, taxi, other
commercial use or vehicle towing
J.
Driving o

ver 106 mph (170 km/h)
K. Frequently driving in stop-and-go conditions
L.

E
ngine oil usage which is not
recommended (semi-synthetic, mineral
type, lower grade spec, etc.)

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
Miles×1,000 8 16 24 32 40 48 56 64 72 80 88 96 104 Km×1,000 13 26 39 52 65 78 91 104 117 130 143 156 169
Battery condition I I I I I I I I I I I I I
Brake lines, hoses and connections I I I I I I I I I I I I I
Disc brakes and pads I I I I I I I I I I I I I
Driveshaft and boots I I I I I I I I I I I I I
Suspension mounting bolts I I I I I I I I I I I I I
Air conditioner refrigerant I I I I I I I I I I I I I
Air conditioner compressor I I I I I I I I I I I I I
Exhaust pipe and muffler I I I I I I I I I I I I I
Automatic transmission fluid No check, No service required
Steering gear rack, linkage and boots IIIR: Replace or change.
I : Inspect and if necessary, adjust, correct, clean or replace.

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 *
1R Every 5,000 miles or
6 months A, B, C, D, E, F,
G, H, I, J, K, L
Air cleaner filter RMore frequently C, E
Spark plugs RMore frequently A, B, F, G, H, I, K
Automatic transmission fluid R Every 60,000 miles A, C, E, F, G, I
Front brake disc/pads, calipers I More frequently C, D, G, H
Rear brake shoes or disc/pads I More 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
*1 : Requires grade engine oil. If a lower grade
engine oil (mineral oil including Semi-synthetic) is used, then the engine oil and
engine oil filter must be replaced as indicated for severe maintenance condition.
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.

Ext
ensive engine idling or low speed
driving for long distances
C.
Driving on r

ough, dusty, muddy,
unpaved, graveled or salt- spread
roads
D.
Driving in ar

eas using salt or other
corrosive materials or in very cold
weather
E.

Driving in sandy ar
eas F.
Driving in hea

vy traffic area over 90°F
(32°C)
G. Driving on uphill, do wnhill, or
mountain road
H.

T
owing a Trailer, or using a camper, or
roof rack
I.

Driving as a pa
trol car, taxi, other
commercial use or vehicle towing
J.
Driving o

ver 106 mph (170 km/h)
K. Frequently driving in stop-and-go conditions
L.

E
ngine oil usage which is not
recommended (semi-synthetic, mineral
type, lower grade spec, etc.)

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.

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)
....................................................................... 6-94
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