2019 HYUNDAI SONATA HYBRID service

7-13
7
Maintenance
Maintenance under severe usage conditions
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 I : Inspect and, after inspection, clean, adjust, repair or replace if necessary
MAINTENANCE ITEMMAINTENANCEOPERATIONMAINTENANCE INTERVALSDRIVING
CONDITION
ENGINE OIL AND FILTERREVERY 6,000 KM OR 6 MONTHSA, B, C, D, E, F, G, H, I, K
AIR CLEANER FILTERRMORE FREQUENTLYC, E
SPARK PLUGSRMORE FREQUENTLYB, H
AUTOMATIC TRANSMISSION FLUIDREVERY 96,000 KMA, C, D, E, F, G, H, I, K
HSG (Hybrid Starter & Generater) BeltREVERY 48,000 KM OR 24 MONTHSC, D, E, LIEVERY 6,000 KM OR 6 MONTHS
FRONT DISC BRAKE/PADS, CALIPERSIMORE FREQUENTLYC, D, G, H
REAR BRAKE DISC/PADSIMORE FREQUENTLYC, D, G, F
PARKING BRAKEIMORE FREQUENTLYC, D, G, H
STEERING GEAR BOX, LINKAGE &
BOOTS/LOWER ARM BALL JOINT, UPPER ARM BALL JOINT
IMORE FREQUENTLYC, D, E, F, G, H, I
DRIVE SHAFTS AND BOOTSIEVERY 12,000 KM OR 6 MONTHSC, D, E, F, G, H, I, J

7-33
7
Maintenance
For best battery service
Keep the battery securely mount-ed.
Keep the battery top clean and dry.
Keep the terminals and connec- tions clean, tight, and coated with
petroleum jelly or terminal grease. Rinse any spilled acid from the bat-
tery immediately with a solution of
water and baking soda.
Battery recharging
Always follow these instructions
when recharging your vehicle’s
battery to avoid the risk of SERI-
OUS INJURY or DEATH from
explosions or acid burns:
Before performing mainte-
nance or recharging the bat-
tery, turn off all accessories and
place the Engine Start/Stop
button to the OFF position.
Keep all flames, sparks, or
smoking materials away from
the battery.
Always work outdoors or in an area with plenty of ventilation.
Wear eye protection when
checking the battery during
charging.
The battery must be removed
from the vehicle and placed ina well ventilated area.
(Continued)
WARNING
OLFH047757
OLFP047757
■Hybrid
■Plug-in hybrid

7-40
Maintenance
Compact spare tire replacement
A compact spare tire has a shorter
tread life than a regular size tire.
Replace it when you can see the
tread wear indicator bars on the tire.The replacement compact spare tire
should be the same size and design
tire as the one provided with your
new vehicle and should be mountedon the same compact spare tire
wheel. The compact spare tire is notdesigned to be mounted on a regular
size wheel, and the compact spare
tire wheel is not designed for mount-
ing a regular size tire.
Wheel replacement
When replacing the metal wheels for
any reason, make sure the new
wheels are equivalent to the original
factory units in diameter, rim widthand offset.
Tire traction
Tire traction can be reduced if you
drive on worn tires, tires that are
improperly inflated or on slippery
road surfaces. Tires should be
replaced when tread wear indicators
appear. To reduce the possibility of
losing control, slow down whenever
there is rain, snow or ice on the road.
(Continued)
When replacing tires (or
wheels), it is recommended to
replace the two front or two
rear tires (or wheels) as a pair.Replacing just one tire can
seriously affect your vehicle'shandling.
Tires degrade over time, even
when they are not being used.
Regardless of the remaining
tread, HYUNDAI recommendsthat tires be replaced after six
(6) years of normal service.
Heat caused by hot climates or frequent high loading condi-
tions can accelerate the aging
process. Failure to follow this
warning may cause sudden
tire failure, which could lead to
a loss of vehicle control result-ing in an accident.
The original tire should be repaired or replaced as soon as
possible to avoid failure of the
spare and loss of vehicle con-
trol resulting in an accident. The
compact spare tire is for emer-
gency use only. Do not operate
your vehicle over 80 km/h (50mph) when using the compact
spare tire.
WARNING

7-43
7
Maintenance
4. Tire ply composition andmaterial
The number of layers or plies of rub-
ber-coated fabric in the tire. Tire
manufacturers also must indicate the
materials in the tire, which include
steel, nylon, polyester, and others.
The letter "R" means radial ply con-
struction; the letter "D" means diago-
nal or bias ply construction; and theletter "B" means belted-bias ply con-
struction.
5. Maximum permissible infla-tion pressure
This number is the greatest amountof air pressure that should be put in
the tire. Do not exceed the maximum
permissible inflation pressure. Refer
to the Tire and Loading Information
label for recommended inflation
pressure.
6. Maximum load rating
This number indicates the maximum
load in kilograms and pounds that
can be carried by the tire. When
replacing the tires on the vehicle,
always use a tire that has the same
load rating as the factory installed
tire.
7. Uniform tire quality grading
Quality grades can be found where
applicable on the tire sidewall
between tread shoulder and maxi-
mum section width.
For example:
TREAD wear 200
TRACTION AA
TEMPERATURE A
Tread wear
The tread wear grade is a compara-
tive rating based on the wear rate ofthe tire when tested under controlled
conditions on a specified govern-
ment test course. For example, a tire
graded 150 would wear one-and-a-
half times (1½) as well on the gov-
ernment course as a tire graded 100.
The relative performance of tires depends upon the actual conditions
of their use, however, and may
depart significantly from the norm
due to variations in driving habits,
service practices and differences in
road characteristics and climate.
These grades are molded on the
sidewalls of passenger vehicle tires.
The tires available as standard or
optional equipment on your vehicle
may vary with respect to grade.

7-74
Maintenance
Rear combination light bulb replacement
(1) Stop/Tail lamp
(2) Turn signal lamp
(3) Tail lamp
(4) Back-up lamp
(5) Rear side marker (LED) (if equipped)
Stop/Tail lamp and Turn signal
lamp (Bulb type)
1. Open the trunk lid.
2. Remove the service cover by turn-ing the lock counterclockwise and then pulling it out. 3. Remove the socket from the
assembly by turning the socket
counterclockwise until the tabs on
the socket align with the slots on
the assembly.
4. Remove the bulb from the socket by pressing it in and rotating it
counterclockwise until the tabs on
the bulb align with the slots in the
socket. Pull the bulb out of the
socket.
5. Install a new bulb by inserting it into the socket and rotating it until
it locks into place.OLF077060
OLF074062OLF077128
Stop/Tail lamp
Turn Signal lamp

7-87
7
Maintenance
EEMM IISS SSIIOO NN CC OO NNTTRR OO LL SS YY SSTT EEMM
The emission control system of your
vehicle is covered by a written limited
warranty. Please see the warranty
information contained in the Service
Passport 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 sys-
tem
(2) Evaporative emission control sys- tem
(3) Exhaust emission control systemIn order to assure the proper function
of the emission control systems, it is
recommended that you have your
vehicle inspected and maintained by
an authorized HYUNDAI dealer inaccordance with the maintenance
schedule in this manual.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 controlsystem including onboard
refueling vapor recovery
(ORVR)
The Evaporative Emission Control
System is designed to prevent fuel
vapors from escaping into the atmos-
phere. The ORVR system is
designed to allow the vapors fromthe fuel tank to be loaded into a can-ister while refueling at the gas sta-
tion, preventing the escape of fuel
vapors into the atmosphere.
For the Inspection and
Maintenance Test (With Electronic
Stability Control (ESC) system)
To prevent the vehicle from
ESC acitvation during
dynamometer testing, turn the
Electronic Stability Control
(ESC) system off by pressing
the ESC switch (ESC OFFlight illuminated).
After dynamometer testing is
completed, turn the ESC sys-
tem back on by pressing the
ESC switch again.
CAUTION

8-6
Specifications & Consumer information
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.
RREECCOO MM MMEENN DDEEDD LL UU BBRRIICC AA NN TTSS AA NN DD CC AA PPAA CCIITT IIEE SS
*1
Refer to the recommended SAE viscosity numbers on the next page.
* 2
Engine oils labeled Energy Conserving Oil are now available. Along with other additional benefits, they contribute to fuel econo my by reducing
the amount of fuel necessary to overcome engine friction. Often, these improvements are difficult to measure in everyday driving, but in a year’s
time, they can offer significant cost and energy savings.
* 3
If the API service SM engine oil is not available in your country, you are able to use API service SL. Lubricant
Volume Classification
Engine oil * 1
*2
(drain and refill)
Recommends
4.1 l(4.33 US qt.) API Service SM or above *
3
/ ILSAC GF- 4 or above
ACEA A5 or above
Automatic transmission fluid
6.0 l (6.34 US qt.) MICHANG ATF SP-IV / SK ATF SP-IV /
NOCA ATF SP-IV / HYUNDAI genuine ATF SP-IV or other
brands meeting the above specification approved by Hyundai Motor Co.,
Engine coolant6.6 ~ 6.9 l
(6.97~7.29 US qt.)Mixture of antifreeze and water
(Ethylene glycol base coolant for aluminum radiator)
Inverter coolant
2.26 l(2.38 US qt.) Mixture of antifreeze and water
(Ethylene glycol base coolant for aluminum radiator)
Brake fluid
0.7~0.8 l
(0.74~0.85 US qt.) FMVSS116 DOT-3 or DOT-4
FuelHybrid60
l(15.85 US gal.)Refer to "Fuel Requirements" in the Foreword chapter.Plug-in hybrid55 l(14.53 US gal.)

I-2
Accessing your vehicle .....................................................3-3
Immobilizer System .....................................................3-8
Smart Key.....................................................................3-3
Air bag - advanced supplemental restraint system .........2-47 Additional Safety Precautions ....................................2-69
Air Bag Warning Labels.............................................2-70
How Does the Air Bag System Operate? ...................2-53
Occupant Classification System (OCS) .....................2-58
SRS Care ....................................................................2-68
What to Expect After an Air Bag Inflates ..................2-57
Where Are the Air Bags? ...........................................2-49
Why Didn't My Air Bag Go Off in a Collision?........2-63
Air cleaner.......................................................................7-26
Filter replacement .......................................................7-26
Air conditioning system....................................................8-5
Appearance care..............................................................7-78 Exterior care ...............................................................7-78
Interior care ................................................................7-84
Automatic climate control system ................................3-119
Automatic heating and air conditioning ...................3-120
Manual heating and air conditioning .......................3-121
System maintenance .................................................3-131
System operation ......................................................3-129 Automatic Emergency Braking (AEB)...........................5-67
AEB front radar sensor ..............................................5-72
AEB warning message and system control................5-69
Limitations of the system ...........................................5-75
System malfunction ....................................................5-73
System setting and activation .....................................5-67
Automatic transmission ..................................................5-12 Automatic transmission operation..............................5-12
Good driving practices ...............................................5-17
Parking........................................................................5-17
Basic troubleshooting guide ...........................................6-35
Battery .............................................................................7-32 Battery recharging ......................................................7-33
For best battery service ..............................................7-33
Reset features .............................................................7-34
Before driving ...................................................................5-4
Before entering the vehicle ..........................................5-4
Before starting ..............................................................5-4
Blind Spot Detection system (BSD) ...............................5-45 BSD (Blind Spot Detection) / LCA (Lane Change Assist) .....................................5-46
Limitations of the system ...........................................5-52
RCTA (Rear Cross Traffic Alert) ...............................5-49
Brake fluid ......................................................................7-24 Checking the brake fluid level ...................................7-24
Index
A
B