2012 Hyundai Sonata Hybrid engine

Specifications, Consumer information, Reporting safety defects
68
Recommended SAE viscosity
number Engine oil viscosity (thickness) has an
effect on fuel economy and cold weather
operating (engine start and engine oil
flowability). Lower viscosity engine oils
can provide better fuel economy and cold
weather performance, however, higher
viscosity engine oils are required for sat-
isfactory lubrication in hot weather. Using
oils of any viscosity other than those rec-
ommended could result in engine dam-
age.When choosing an oil, consider the range
of temperature your vehicle will be oper-
ated in before the next oil change.
Proceed to select the recommended oil
viscosity from the chart.
CAUTION
Always be sure to clean the area
around any filler plug, drain plug, ordipstick before checking or drain- ing any lubricant. This is especiallyimportant in dusty or sandy areasand when the vehicle is used onunpaved roads. Cleaning the plugand dipstick areas will prevent dirtand grit from entering the engineand other mechanisms that couldbe damaged.
Temperature Range for SAE Viscosity Numbers
Temperature
Engine Oil *
1
°C
(°F)-30 -20 -10 0 10 20 30 40 50 -10 0 20 40 60 80 100 120
1. For better fuel economy, it is recommended to use the engine oil of
a viscosity grade SAE 5W-20 (API Service SM / ILSAC GF-4).
However, if the engine oil is not available, select the proper engine
oil using the engine oil viscosity chart.
10W-30
5W-20, 5W-30

87
Specifications, Consumer information, Reporting safety defects
VEHICLE IDENTIFICATION
NUMBER (VIN)
The vehicle identification number (VIN) is
the number used in registering your car
and in all legal matters pertaining to its
ownership, etc.
The number is punched on the engine
compartment bulkhead.The VIN is also on a plate attached to the
top of the dashboard. The number on the
plate can easily be seen through the
windshield from outside.
VEHICLE CERTIFICATION
LABEL
The vehicle certification label attached
on the driver’s side center pillar contains
the vehicle identification number (VIN).
OYF089005OYFH081004NOBH088005N
Frame number (if equipped)VIN label

Specifications, Consumer information, Reporting safety defects
88
TIRE SPECIFICATION AND
PRESSURE LABEL
The tires supplied on your new vehicle
are chosen to provide the best perform-
ance for normal driving.
The tire label located on the driver's side
center pillar gives the tire pressures rec-
ommended for your car.
ENGINE NUMBER
The engine number is stamped on the
engine block as shown in the drawing.
REFRIGERANT LABEL
The refrigerant label is located on the
engine compartment bulkhead.OYF089002OYFH081003NOYFH081005N

H2
Hyundai Hybrid Electric Vehicle (HEV)
uses a gasoline engine and an electric
motor for power. The electric motor is
run from a 280V high voltage HEV bat-
tery.
HEV computer decides according to
drive condition when to use engine
from when to use the electric motor or
even both at times.
Fuel is saved when the engine is not
running at idle at times or the vehicle
is driven by the electric motor from
the HEV battery.
The charge of the HEV battery has to
be maintained so at times the engine
becomes a generator which includes
when stopped at idle. Charging also
occurs when decelerating or by
regenerative braking.Display of Hybrid system
Many displays provide information about
the hybrid system, such as, ECO level
and ECO score.
Through the ECO LEVEL, the driver under-
stands the situation of economical driving.
If the driver drives the vehicle with eco-
nomical driving, the ECO LEVEL rises.
And it means the CO2 emission reduction.
In TOTAL ECO SCORE, when you get the
maximum step of ECO LEVEL, ECO sys-
tem adds the score and saves the score.Eco level display flower mode.1
When the hybrid vehicle is started, the
ECO level step 4 is displayed. If you drive
economically, ECO level will be upgrad-
ed.
- However, if you do not drive economical-
ly, the ECO level will be down-graded.
HYUNDAI HYBRID SYSTEM
OYFH041337N

H3
Eco level display flower mode.2
In the “vehicle setting”, if you change the
animation mode to "ON", the dynamic
image will be activated.
- This provides the driver with thedynamic ECO mode. Total eco score display
If your ECO level achieves the top step,
your ECO score automatically saves 1
point.
In the “vehicle setting”, if you change the
animation mode to “ON”, the dynamic
image will be on.SOC Gauge (State of charge)
This State of Charge(SOC) gauge indi-
cates the left Hybrid battery power. If the
SOC is near L level, the vehicle automat-
ically operates the engine to charge the
battery. However, if the service indicator
and MIL(Malfunction indicator lamp) turn
on when the State of Charge(SOC) is
near L(Low), the vehicle should be
towed. Refer to the chapter 6.
OYFH041338NOYFH041339N
OYFH041311N

H4
Hyundai SONATA hybrid system notifies
customers of energy flow through
MODE.
As condition of vehicle drive, eleven
MODEs show drivers the current operat-
ing system.
Vehicle Stop
This mode means the
vehicle stop.
(No energy flow)
EV Propulsion
Motor power is used to
move the vehicle.
(Battery ➞Wheel)
Power Assist
Motor and Engine
power are used to
move the vehicle.
(Battery & Energy ➞
Wheel)
Engine Only Propulsion
Engine power is used
to move the vehicle.
(Engine ➞Wheel)
Engine Generation
When the vehicle is
stopped, Engine charges
the high voltage battery.
(Engine ➞Battery)
SONATA HEV ENERGY FLOW
OYFH041320N
OYFH041347N
OYFH041329N
OYFH041333N
OYFH041335N

H5
Regeneration
By the regenerative
brake system, the high
voltage battery is
charged.
(Wheel ➞Battery)
Engine Brake
This is the brake situa-
tion of vehicle used to
Engine Friction.
(Wheel ➞Engine)
Power Reserve
When the engine oper-
ates the vehicle, simul-
taneously the battery is
charged.
(Engine ➞ Wheel &
Battery)
Engine Generation/Motor Drive
The engine charges
the high voltage bat-
tery. The motor oper-
ates the vehicle.
(Engine ➞Battery ➞
Wheel)
Engine Generation/Regeneration
The engine and regen-
erative brake system
charges the high volt-
age battery.
(Engine & Wheel ➞ Battery)
Engine Brake/Regeneration
The engine friction is
used to vehicle brake
system and the regen-
erative brake charges
the hybrid battery.
(Wheel ➞Engine &
Battery)
OYFH041336N
OYFH041333NOYFH041349N
OYFH041323N
OYFH041329N
OYFH041332N

H6
Starting the engine
1. Carry the smart key or leave it insidethe vehicle.
2. Make sure the parking brake is firmly applied.
3. Place the shift lever in the P(Park) position. In N(Neutral) position, you
can not start the vehicle.
4. Depress the brake pedal.
5. Press the engine start/stop button.
6. In extremely cold weather or after the vehicle has not been operated for sev-
eral days, let the engine warm up with-
out depressing the accelerator.
Whether the engine is cold or warm, it
should be started without depressing
the accelerator.
if it is far away from you, the engine
may not start.
in the ACC or ON position, if any door
is open, the system checks for the
smart key. If the smart key is not in
the vehicle, the warning, "Key is not
in vehicle" will come on, and if all
doors are closed, the chime will also
sound for about 5 seconds. The indi-
cator will turn off while the vehicle is
moving. Keep the smart key in the
vehicle when using the ACC position
or if the vehicle engine is on. IF the starting procedure is followed,
the "READY" symbol on the instru-
ment cluster will turn on. For more
details, Please check chapter 5.
ECONOMICAL and SAFE OPERA-
TION of Hybrid system
Drive smoothly. Accelerate at a mod-
erate rate and maintain a steady cruis-
ing speed. Don't make "jack-rabbit"
starts. Don't race between stoplights.
Avoid heavy traffic whenever possible.
Always maintain a safe distance from
other vehicles so you can avoid unnec-
essary braking. This also reduces
brake wear.
The regenerative brake generates energy when the vehicle decelerates.
When the hybrid battery power is low, the hybrid system automatically
recharges the hybrid battery.
When the engine runs in "N" position, the hybrid system can not generate
electricity. The hybrid battery cannot
recharge in "N" position. Please check
chapter 5.
✽ ✽ NOTICE
In the hybrid system, the engine auto-
matically runs and stops. If the hybrid
system operates, the "READY" symbol
is illuminated.
In the following situation, the engine
may operate automatically.
- When the engine is ready to run
- When the hybrid battery is charged
- Depending on the temperature condi-
tion of the hybrid battery
STARTING THE HYBRID VEHICLE (SMART KEY)