2011 Hyundai Sonata Hybrid stop start

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
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H6
Starting the engine
1. Carry the smart key or leave it inside
the 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)

H11
The special features of hybrid
vehicle.
Hybrid vehicles sound different than
gasoline engine vehicles. When the
hybrid system operates, you may hear a
sound from the hybrid battery system
behind the rear seat. If you apply the
accelerator pedal rapidly, you may hear a
sound. when you apply the brake pedal,
you may hear a sound from the regener-
ative brake system. When the hybrid sys-
tem is turned off or on, you may hear a
sound in the engine compartment. If you
depress the brake pedal repeatedly
when the hybrid system is turned on, you
may hear a sound in the engine com-
partment. None of these sounds indicate
a problem. They are characteristics of
hybrid vehicles.
If any of following occur, it's not a unnor-
mal condition even if you may hear a
motor sound in the engine compartment.
- After turning off the hybrid system, the
brake pedal is released.
- When the hybrid system is turned off,
the brake pedal is applied.
- When the driver door is opened.When the hybrid system is turned on, the
engine may run or not. In this situation,
you may feel a vibration. This does not
indicate a malfunction. If the "READY"
symbol is turned on, the hybrid system
starts. Even if the engine is off, you can
operate the vehicle.
WARNING
The hybrid system contains many
electronic components. High volt-
age components like cables and
other parts may emit electromag-
netic waves. Even if the electro-
magnetic cover blocks electromag-
netic emissions, electromagnetic
waves may have an effect on elec-
tronic appliances. If you park the
vehicle for a long time, the hybrid
system will discharge. You need to
drive the vehicle several times per
month. We recommend driving at
least 1 hour or 10 miles when you
drive the vehicle. If the hybrid bat-
tery is discharged and if it is impos-
sible to jump start the vehicle con-
tact your Hyundai dealer.
WARNING
When you start the hybrid system
in the "P" transmission position,
the "READY" symbol is illuminat-
ed in the cluster. The driver can
drive the vehicle even if the
engine is stopped.
When you leave the vehicle, you
should turn off the hybrid system
or shift into the "P" position. If
you depress the accelerator
pedal by mistake and the vehicle
is not in the "P" position, the
vehicle will move abruptly. This
may result in serious injury or
death.

H13
If An Accident OccursWhen the hybrid vehicle shuts off
When the high voltage battery dis-
charged, 12-volt battery discharged, or
fuel tank is empty, the hybrid system may
not operate while driving. If the Hybrid
system is not operated, do the following;
1. Reduce the vehicle speed gradually.
Pull your vehicle off the road as safe
area.
2. Shift the transmission into "P" position.
3. Turn on the hazard warning flashers.
4. Set the start button at OFF, and try to
start the Hybrid system by applying the
brake pedal and pushing the start but-
ton.
5. If the Hybrid system will not operate,
refer to "EMERGENCY STARTING" in
chapter 6.
When you try to jump start the vehicle,
confirm the fuel level and exact proce-
dure of jump start. For details, see the
"EMERGENCY STARING" in chapter 6.
If the fuel level is low, do not try to drive
the vehicle on battery power. The high
voltage battery may be discharged and
the Hybrid system will turn off.
WARNING
After parking the vehicle, shift the
transmission into "P" position.
Turn off the hybrid system. Push
the button again to turn off.
For your safety, do not touch high
voltage cables, connectors and
package modules.
Exposed cables or wires maybe
visible inside or outside of the
vehicle. Never touch the wires or
cables, because an electrical
shock may occur causing injury or
death.
If a fire occurs, never use water to
put out a fire. For safety, use an
extinguisher for electrical fires
with proper chemicals and evacu-
ate immediately.
If you need towing, refer to chapter
6.
WARNING
When you pull your vehicle off the
road as safe area, open the door
when the vehicle completely stops.

23
Your vehicle at a glance
INSTRUMENT PANEL OVERVIEW
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1. Instrument cluster.............................4-40
2. Light control/Turn signals .................4-69
3. Audio controls ................................4-110
4. Horn .................................................4-30
5. Driver’s front air bag .........................3-48
6. Wiper/Washer ...................................4-74
7. Engine start/stop button .....................5-5
8. Hazard warning flasher switch ...4-68, 6-2
9. Audio* .............................................4-110
10. Climate control system ...................4-80
11. Shift lever .........................................5-9
12. AUX, USB, iPod............................4-104
13. Power outlet .................................4-102
14. Passenger’s front air bag ...............3-48
15. Glove box .......................................4-99
* : if equipped

39
Safety features of your vehicle
Active headrest (if equipped)
The active headrest is designed to move
forward and upward during a rear impact.
This helps to prevent the driver's and
front passenger’s head from moving
rearward and thus helps prevent neck
injuries.Seat warmer (if equipped)
The seat warmer is provided to warm the
front seats during cold weather. With the
engine start/stop button in the ON posi-
tion, push either of the switches to warm
the driver's seat or the front passenger's
seat.During mild weather or under conditions
where the operation of the seat warmer
is not needed, keep the switches in the
"OFF" position.
The temperature setting of the seat is
changed as follows :
✽ ✽
NOTICE
With the seat warmer switch in the LO
or HI position, the heating system in the
seat turns off or on automatically
depending on the seat temperature.
HNF2041-1
Switch
positionLO Center HI
TemperatureLOWOFFHIGH
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Safety features of your vehicle
12 3
Adjusting the height up and down
To raise the headrest, pull it up (1). To
lower the headrest, push and hold the
release button (2) on the headrest sup-
port and lower the headrest (3).Removal
To remove the headrest, raise it as far as
it can go then press the release button
(1) while pulling upward (2).
To reinstall the headrest, put the head-
rest poles (3) into the holes while press-
ing the release button (1). Then adjust it
to the appropriate height.Seat warmer (if equipped)
The seat warmer is provided to warm the
rear seats during cold weather. With the
engine start/stop button in the ON posi-
tion, push either switch to warm the seat.
During mild weather or under conditions
where the operation of the seat warmer
is not needed, keep the switches in the
"OFF" position.
✽ ✽
NOTICE
With the seat warmer switch in ON
position, the heating system in the seat
turns off or on automatically depending
on the seat temperature.
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WARNING
Make sure the headrest locks in
position after adjusting it to proper-
ly protect the occupants.
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Safety features of your vehicle
16 3
Seat belt warning (for driver’s seat)
The driver's seat belt warning light and
chime will activate to the following table
when the engine start/stop button is in
"ON" position.
*
1Warning pattern repeats 11 times with
an interval of 24 seconds. If the driver's
seat belt is buckled, the light will stop
within 6 seconds and chime will stop
immediately.
*
2The light will stop within 6 seconds and
chime will stop immediately.
Seat belt warning (for front passen-
ger’s seat)
The front passenger's seat belt warning
light will activate to the following table
when the engine start/stop button is in
"ON" position.
1GQA2083
ConditionsWarning Pattern
Seat BeltVehicle
SpeedLight-BlinkChime-
Sound
Unbuckled6 seconds
Buckled6 secondsNone
Buckled →
Unbuckled
Below 3 mph
(5 km/h)6 secondsNone
3 mph~
6 mph6 seconds
Above 6 mph
(10 km/h)6 sec. on / 24 sec. off
(11 times)
Unbuckled
Above 6 mph
(10 km/h)
↓
Below 3 mph
(5 km/h)6 seconds *1
↓
Stop *2
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■Type A
■Type B