2015 Hyundai Sonata Hybrid coolant

725
Maintenance
Check the condition and connections of
all cooling system hoses and heater
hoses. Replace any swollen or deterio-
rated hoses.
The coolant level should be filled
between F and L marks on the side of the
coolant reservoir when the engine is cool.
If the coolant level is low, add enough
distilled (deionized) water to provide pro-
tection against freezing and corrosion.
Bring the level to F, but do not overfill. If
frequent additions are required, see an
authorized HYUNDAI dealer for a cooling
system inspection.
OYFH071005N
(Continued)
The engine coolant and/or invertercoolant level is influenced by
hybrid system temperature. Before
filling the engine coolant and/or
inverter coolant, turn the hybrid
vehicle off, fill the engine coolant
and/or inverter coolant carefully.
Turn the engine off and wait until it cools down. Use extreme care
when removing the radiator and/or
inverter coolant cap. Wrap a thick
towel around it, and turn it coun-
terclockwise slowly to the first
stop. Step back while the pressure
is released from the cooling sys-
tem. When you are sure all the
pressure has been released, press
down on the cap, using a thick
towel, and continue turning coun-
terclockwise to remove it.
Even if the engine is not operat- ing, do not remove the radiator
and/or inverter coolant cap or the
drain plug while the engine and
radiator are hot. Hot coolant and
steam may still blow out under
pressure, causing serious injury.WARNING
The electric motor
(cooling fan) is con-
trolled by engine
coolant temperature,
refrigerant pressure
and vehicle speed. It may some-
times operate even when the
engine is not running. Use extreme
caution when working near the
blades of the cooling fan so that
you are not injured by the rotating
fan blades. As the engine coolant
temperature decreases, the electric
motor will automatically shut off.
This is a normal condition.

Maintenance
26
7
Recommended engine and inverter
coolant
When adding coolant, use only deion- ized water or soft water for your vehicle
and never mix hard water in the
coolant filled at the factory. An improp-
er coolant mixture can result in serious
malfunction or engine damage.
The engine in your vehicle has aluminum engine parts and must be protected by
an ethylene-glycol-based coolant to pre-
vent corrosion and freezing.
DO NOT USE alcohol or methanol coolant or mix them with the specified
coolant.
Do not use a solution that contains more than 60% antifreeze or less than
35% antifreeze, which would reduce
the effectiveness of the solution.
For mixture percentage, refer to the fol-
lowing table.
Changing the coolant
Have engine and inverter coolant
changed by an authorized HYUNDAI
dealer according to the Maintenance
Schedule at the beginning of this section.
WARNING - Radiator cap &
Inverter coolant cap
Do not remove the radiator cap and
/or inverter coolant cap when the
engine and radiator are hot.
Scalding hot coolant and steam
may blow out under pressure caus-
ing serious injury.
WARNING -Coolant
Do not use radiator coolant or
antifreeze in the washer fluid
reservoir.
Radiator coolant can severely obscure visibility when sprayed
on the windshield and may cause
loss of vehicle control or damage
to paint and body trim.
CAUTION
Put a thick cloth or fabric aroundthe radiator and/or inverter cap before refilling the coolant in orderto prevent the coolant from over- flowing into engine parts such asthe generator.
5°F (-15°C) 35 65
-13°F (-25°C) 40 60
-31°F (-35°C) 50 50
-49°F (-45°C) 60 40
Ambient
Temperature Mixture Percentage (volume)
Antifreeze Water
OYFH071006N-1
OYFH071070N-1
Radiator cap
Inverter coolant cap

Maintenance
28
7
WASHER FLUID
Checking the washer fluid level
The reservoir is translucent so that you
can check the level with a quick visual
inspection.
Check the fluid level in the washer fluid
reservoir and add fluid if necessary. Plain
water may be used if washer fluid is not
available. However, use washer solvent
with antifreeze characteristics in cold cli-
mates to prevent freezing.
Checking the parking brake
Check whether the stroke is within spec-
ification when the parking brake pedal is
depressed with 44 lb (20 kg, 196 N) of
force. Also, the parking brake alone should
securely hold the vehicle on a fairly steep
grade. If the stroke is more or less than
specified, have the parking brake adjusted
by an authorized HYUNDAI dealer.
Stroke : 4~5 notch
WARNING -Coolant
Do not use radiator coolant or
antifreeze in the washer fluid
reservoir.
Radiator coolant can severely obscure visibility when sprayed
on the windshield and may cause
loss of vehicle control or damage
to paint and body trim.
Windshield washer fluid agents contain some amounts of alcohol
and can be flammable under cer-
tain circumstances. Do not allow
sparks or flame to contact the
washer fluid or the washer fluid
reservoir. Damage to the vehicle
or occupants could occur.
Windshield washer fluid is poi- sonous to humans and animals.
Do not drink and avoid contacting
windshield washer fluid. Serious
injury or death could occur.
OYFH071010N
PARKING BRAKE
OYF059023

747
Maintenance
Cold Tire Pressure: The amount of
air pressure in a tire, measured in
pounds per square inch (psi) or kilo-
pascals (kPa) before a tire has built
up heat from driving.
Curb Weight: This means the weight
of a motor vehicle with standard and
optional equipment including the
maximum capacity of fuel, oil and
coolant, but without passengers and
cargo.
DOT Markings: A code molded into
the sidewall of a tire signifying that
the tire is in compliance with the U.S.
Department of Transportation motor
vehicle safety standards. The DOT
code includes the Tire Identification
Number (TIN), an alphanumeric des-
ignator which can also identify the
tire manufacturer, production plant,
brand and date of production.
GVWR: Gross Vehicle Weight Rating
GAWR FRT: Gross Axle Weight
Rating for the Front Axle.
GAWR RR: Gross Axle Weight
Rating for the Rear axle.Intended Outboard Sidewall
: The
side of an asymmetrical tire, that
must always face outward when
mounted on a vehicle.
Kilopascal (kPa): The metric unit for
air pressure.
Load Index: An assigned number
ranging from 1 to 279 that corre-
sponds to the load carrying capacity
of a tire.
Maximum Inflation Pressure : The
maximum air pressure to which a
cold tire may be inflated. The maxi-
mum air pressure is molded onto the
sidewall.
Maximum Load Rating : The load
rating for a tire at the maximum per-
missible inflation pressure for that
tire.
Maximum Loaded Vehicle Weight:
The sum of curb weight; accessory
weight; vehicle capacity weight; and
production options weight.
Normal Occupant Weight:The
number of occupants a vehicle is
designed to seat multiplied by 150
pounds (68 kg). Occupant Distribution
: Designated
seating positions.
Outward Facing Sidewall: The side
of a asymmetrical tire that has a par-
ticular side that faces outward when
mounted on a vehicle. The outward
facing sidewall bears white lettering
or bears manufacturer, brand, and/or
model name molding that is higher or
deeper than the same moldings on
the inner facing sidewall.
Passenger (P-Metric) Tire : A tire
used on passenger cars and some
light duty trucks and multipurpose
vehicles.
Recommended Inflation Pressure :
Vehicle manufacturer's recommend-
ed tire inflation pressure and shown
on the tire placard.
Radial Ply Tire : A pneumatic tire in
which the ply cords that extend to the
beads are laid at 90 degrees to the
centerline of the tread.
Rim: A metal support for a tire and
upon which the tire beads are seat-
ed.
Sidewall: The portion of a tire
between the tread and the bead.

777
Maintenance
EMISSION CONTROL SYSTEM
The emission control system of your
vehicle is covered by a written limited
warranty. Please see the warranty infor-
mation contained in the Owner’s
Handbook & Warranty Information book-
let in your vehicle.
Your vehicle is equipped with an emis-
sion control system to meet all applicable
emission regulations.
There are three emission control sys-
tems, as follows.
(1) Crankcase emission control system
(2) Evaporative emission control system
(3) Exhaust emission control system
In order to assure the proper function of
the emission control systems, it is rec-
ommended that you have your car
inspected and maintained by an author-
ized HYUNDAI dealer in accordance with
the maintenance schedule in this manu-
al.Caution for the Inspection and
Maintenance Test (With Electronic
Stability Control (ESC) system)
To prevent the vehicle from misfir-
ing during dynamometer testing,
turn the Electronic Stability Control
(ESC) system off by pressing the
ESC switch.
After dynamometer testing is com- pleted, turn the ESC system back on
by pressing the ESC switch again.
1. Crankcase emission control system
The positive crankcase ventilation sys-
tem 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(including ORVR: Onboard
Refueling Vapor Recovery)
system
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 con-
trolled by the Engine Control Module
(ECM); when the engine coolant tempera-
ture 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.

85
Specifications, Consumer information, Reporting safety defects
RECOMMENDED LUBRICANTS AND CAPACITIES
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.
*1Refer to the recommended SAE viscosity numbers on the next page.
*2Engine 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.
*
3Yellow engine oil dipstick
*4Red engine oil dipstick
*5If the API service SM engine oil is not available in your country, you are able to use API service SL.
LubricantVolumeClassification
Engine oil *1 *2 (drain and refill)
Recommends4.86 US qt. (4.6 l)*3
API Service SM*5,
ILSAC GF-4 or above
5.07 US qt. (4.8 l)*4
Automatic transaxle fluid6.97 US qt. (6.6 l)
MICHANG ATF SP-IV, SK ATF SP-IV
NOCA ATF SP-IV, HYUNDAI genuine ATF SP4-M or other brands meeting the above specification approved by Hyundai Motor Co.,
Coolant 6.97~7.29 US qt. (6.6~6.9 l)Mixture of antifreeze and water (Ethylene glycol base coolant for aluminum radiator)
Inverter coolant2.39 US qt. (2.26 l)Mixture of antifreeze and water (Ethylene glycol basecoolant for aluminum radiator)
Brake fluid0.7~0.8 US qt. (0.7~0.8 l)FMVSS116 DOT-3 or DOT-4
Fuel17.2 US gal. (65 l)Unleaded gasoline

I3
Index
Brakes fluid··················\
··················\
·············· ·7-27
Bulb replacement ··················\
··················\
······· ·7-61
Bulb wattage ··················\
··················\
··············8-3
Button start/stop, see engine start/stop button ············5-5
California perchlorate notice ··················\
·············7-80
Camera (Rear view) ··················\
··················\
···· ·4-70
Capacities (Lubricants) ··················\
··················\
··8-5
Capacity/Weight ··················\
··················\
··········8-2
Care Exterior care ··················\
··················\
········· ·7-71
Interior care ··················\
··················\
·········· ·7-75
Tire care ··················\
··················\
·············· ·7-37
Cargo weight ··················\
··················\
············ ·5-43
Center console storage ··················\
··················\
·4-119
Central door lock switch ··················\
················· ·4-12
Certification label ··················\
··················\
······· ·5-41
Certification label ··················\
··················\
·········8-7
Chains Tire chains ··················\
··················\
············ ·5-35
Changing tires (with spare tire) ··················\
··········6-15
Checking tire inflation pressure ··················\
·········7-38
Child restraint system ··················\
··················\
·· ·3-27
Lower anchor system ··················\
················· ·3-33
Seat belt ··················\
··················\
··············· ·3-29
Tether anchor system ··················\
················· ·3-31Child-protector rear door lock
··················\
···········4-14
Climate control air filter ············4-93, 4-104, 4-115, 7-30
Clock (Digital) ··················\
··················\
········· ·4-123
Clothes hanger ··················\
··················\
········· ·4-123
Combined instrument, see instrument cluster ···········4-40
Compact spare tire (with spare tire) ··················\
·····6-15
Compact spare tire replacement ··················\
·········7-42
Components of the tire mobility kit ··················\
·····6-24
Consumer information ··················\
··················\
··· ·8-9
Coolant ··················\
··················\
··················\
· ·7-24
Cooling fluid, see engine coolant ··················\
·······7-24
Crankcase emission control system ··················\
·····7-77
Cruise control system ··················\
··················\
·· ·5-24
Cup holder ··················\
··················\
··············4-121
Curtain air bag ··················\
··················\
·········· ·3-53
Dashboard illumination,
see instrument panel illumination··················\
···· ·4-41
Dashboard, see instrument cluster ··················\
·······4-40
Defogging (Windshield) ··················\
················ ·4-116
Defogging logic (Windshield) ··················\
··········4-117
Defroster (Rear window) ··················\
················ ·4-81
Defrosting (Windshield) ··················\
················ ·4-116
Digital clock ··················\
··················\
··········· ·4-123
Dimensions ··················\
··················\
·················8-3
Display illumination, see instrument panel illumination · 4-41
C
D

Index
4I
Displays, see instrument cluster··················\
·········4-40
Door locks ··················\
··················\
················4-11
Central door lock switch ··················\
··············4-12
Child-protector rear door lock ··················\
········4-14
Drinks holders, see cup holders ··················\
········4-121
Driver's 3-point system with emergency
locking retractor··················\
··················\
······ ·3-18
Driver's air bag ··················\
··················\
·········· ·3-48
Driving at night ··················\
··················\
········· ·5-31
Driving in flooded areas ··················\
················· ·5-32
Driving in the rain ··················\
··················\
······ ·5-32
Driving off-road ··················\
··················\
········· ·5-32
ECO GUIDE gauge ··················\
··················\
···· ·4-43
Economical operation ··················\
··················\
·· ·5-28
Electric chromic mirror (ECM) with HomeLink system· ·4-31
Electric power steering ··················\
··················\
· ·4-29
Electronic stability control (ESC) ··················\
·······5-19
Emergency starting ··················\
··················\
········6-6
Jump starting ··················\
··················\
···········6-6
Push starting ··················\
··················\
············6-7
Emergency while driving ··················\
··················\
6-2
Emission control system ··················\
················· ·7-77
Crankcase emission control system ··················\
··7-77
Evaporative emission control system ··················7-77
Exhaust emission control system · · · · · · · ···············7-78 Engine · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
··················8-2
Engine compartment ··················\
················· ·2-4, 7-2
Engine compartment fuse ··················\
··············· ·7-53
Engine coolant ··················\
··················\
·········· ·7-24
Engine number ··················\
··················\
··········· ·8-7
Engine oil ··················\
··················\
·················7-22
Engine overheats ··················\
··················\
········· ·6-8
Engine start/stop button ··················\
··················\
· ·5-5
Engine temperature gauge ··················\
··············· ·4-42
Engine will not start ··················\
··················\
····· ·6-5
Evaporative emission control system ··················\
···7-77
Exhaust emission control system ··················\
········7-78
Explanation of scheduled maintenance items ···········7-19
Exterior care ··················\
··················\
··············7-71
Flat tire (with spare tire) ··················\
················· ·6-14
Changing tires ··················\
··················\
······· ·6-15
Compact spare tire ··················\
··················\
·· ·6-20
Jack and tools ··················\
··················\
·········6-14
Removing and storing the spare tire ··················\
·6-15
Flat tire (with tire mobility kit) ··················\
··········6-22
Components of the tire mobility kit ··················\
·6-24
T

echnical data ··················\
··················\
·········6-27
Using the tire mobility kit ··················\
·············6-25
Floor mat anchor(s) ··················\
··················\
··· ·4-124
E
F