Hyundai Sonata 2015 Owner's Manual

5-43
Driving your vehicle
5
Electronic Stability Control
(ESC)
The Electronic Stability Control
(ESC) system helps to stabilize the
vehicle during cornering maneuvers.
ESC checks where you are steering
and where the vehicle is actually
going. ESC applies braking pressure
to any one of the vehicle’s brakes
and intervenes in the engine man-
agement system to assist the driver
with keeping the vehicle on the
intended path. It is not a substitute
for safe driving practices. Always
adjust your speed and driving to the
road conditions.
ESC operation
ESC ON condition
When the ignition switch is in the ON
position, the ESC and the ESC OFF
indicator lights illuminate for approxi-
mately three seconds and goes off,
then the ESC is turned on.
When operating
When the ESC is in opera-
tion, the ESC indicator light
blinks:
When you apply your brakes under conditions which may lock the
wheels, you may hear sounds from
the brakes, or feel a corresponding
sensation in the brake pedal. This
is normal and it means your ESC is
active.
When the ESC activates, the engine may not respond to the
accelerator as it does under rou-
tine conditions.
Never drive too fast for the road
conditions or too quickly when
cornering. The ESC system will
not prevent accidents.
Excessive speed in turns, abrupt
maneuvers, and hydroplaning
on wet surfaces can result in
severe accidents.
WARNING
OLF054448

5-44
Driving your vehicle
If the Cruise Control was in use when the ESC activates, the
Cruise Control automatically disen-
gages. The Cruise Control can be
reengaged when the road condi-
tions allow. See “Cruise Control
System” later in this chapter. (if
equipped)
When moving out of the mud or driving on a slippery road, the
engine rpm (revolutions per
minute) may not increase even if
you press the accelerator pedal
deeply. This is to maintain the sta-
bility and traction of the vehicle and
does not indicate a problem.
ESC OFF condition
To cancel ESC operation :
State 1
Press the ESC OFF button shortly
(ESC OFF indicator light and mes-
sage illuminates). At this state, the
engine control function does not
operate. In other words, the traction
control function does not operate but
only the brake control function oper-
ates.
Press the ESC OFF button for more
than 3 seconds. ESC OFF indicator
light and message illuminates with
an ESC OFF warning chime. At this
state, the engine control function and
brake control function does not oper-
ate. In other words, the vehicle sta-
bility control function does not oper-
ate any more.
If the ignition switch is placed to the
LOCK/OFF position when ESC is off,
ESC remains off. Upon restarting the
engine, the ESC will automatically
turn on again.
■Type A■Type B■Type A■Type B
OLF054439N/OLF054101NOLF054438N/OLF054100N

5-45
Driving your vehicle
5
Indicator lights
When the ignition switch is placed to
the ON position, the ESC indicator
light illuminates, then goes off if the
ESC system is operating normally.
The ESC indicator light blinks when-
ever the ESC is operating.
If ESC indicator light stays on, your
vehicle may have a malfunction with
the ESC system. When this warning
light illuminates have your vehicle
checked by an authorized HYUNDAI
dealer as soon as possible.The ESC OFF indicator light comes
on when the ESC is turned off.
Driving with varying tire or wheel
sizes may cause the ESC system
to malfunction. When replacing
tires, make sure they are the same
size as your original tires for this
vehicle.
ESC OFF usage
When Driving
The ESC OFF mode should only be
used briefly to help free the vehicle if
stuck in snow or mud by temporarily
stopping operation of the ESC to
maintain wheel torque.
To turn ESC off while driving, press
the ESC OFF button while driving on
a flat road surface.
NOTICE
When the ESC is blinking, this
indicates the ESC is active:
Drive slowly and NEVER
attempt to accelerate. NEVER
turn the ESC off while the ESC
indicator light is blinking or you
may lose control of the vehicle
resulting in an accident.
WARNING ■
ESC indicator light (blinks)
■ ESC OFF indicator light (comes on)

5-46
Driving your vehicle
To prevent damage to the trans-
mission:
Do not allow wheel(s) of one axle to spin excessively while
the ESC, ABS, and brake warn-
ing lights are displayed. The
repairs would not be covered by
the vehicle warranty. Reduce
engine power and do not spin
the wheel(s) excessively while
these lights are displayed.
When operating the vehicle on a dynamometer, ensure the ESC is
turned off (ESC OFF light illumi-
nated).
Information
Turning the ESC off does not affect
ABS or standard brake system opera-
tion.
Hill-Start Assist Control (HAC)
The Hill-Start Assist Control (HAC)
prevents the vehicle from rolling
backwards when starting a vehicle
from a stop on a hill. The system
operates the brakes automatically for
approximately 2 seconds and releas-
es the brake when the accelerator
pedal is depressed or after 2 sec-
onds. The HAC does not operate when
the shift lever is in P (Park) or N
(Neutral)
The HAC activates even though the ESC (Electronic Stability
Control) is off but does not acti-
vate when the ESC has malfunc-
tioned.
NOTICE
i
NOTICE
Always be ready to depress the
accelerator pedal when starting
off on a incline. The HAC acti-
vates only for approximately 2
seconds.
WARNING

5-47
Driving your vehicle
5
Good Braking Practices Wet brakes can be dangerous! The
brakes may get wet if the vehicle is
driven through standing water or if it
is washed. Your vehicle will not stop
as quickly if the brakes are wet. Wet
brakes may cause the vehicle to pull
to one side.
To dry the brakes, apply the brakes
lightly until the braking action returns
to normal, taking care to keep the
vehicle under control at all times. If
the braking action does not return to
normal, stop as soon as it is safe to
do so and call an authorized
HYUNDAI dealer for assistance.
DO NOT drive with your foot resting
on the brake pedal. Even light, but
constant pedal pressure can result in
the brakes overheating, brake wear,
and possibly even brake failure.
If a tire goes flat while you are driv-
ing, apply the brakes gently and
keep the vehicle pointed straight
ahead while you slow down. When
you are moving slowly enough for it
to be safe to do so, pull off the road
and stop in a safe location.Keep your foot firmly on the brake
pedal when the vehicle is stopped to
prevent the vehicle from rolling for-
ward.
Whenever leaving the vehicle or
parking, always come to a com-
plete stop and continue to
depress the brake pedal. Move
the shift lever into the P (Park)
position, then apply the parking
brake, and place the ignition
switch in the OFF position.
Vehicles with the parking brake
not fully engaged are at risk for
moving inadvertently and caus-
ing injury to yourself or others.
WARNING

5-48
Driving your vehicle
D
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The drive mode may be selected
according to the driver’s preference
or road condition.
The system initializes to the NOR-
MAL mode (except for ECO mode)
after the engine has been turned off
and on.
Information
If there is a problem with the
Electronic Stability Control (ESC)
system, the drive mode will be in
NORMAL mode and may not change
to ECO mode or SPORT mode. The mode changes whenever the
DRIVE MODE switch is pressed.
When NORMAL mode is selected, it
is not displayed on the instrument
cluster.
The selected mode is displayed on
the instrument cluster.
ECO mode (Active ECO)
Active ECO helps improve
fuel efficiency by control-
ling certain engine and
transmission system
operating parameters.
Fuel efficiency depends on the dri-
ver's driving habit and road condi-
tion.
When the DRIVE MODE switch is pressed and the ECO mode is
selected, the ECO indicator
(green) will illuminate to show that
the Active ECO is operating.
When the Active ECO is activated, and the engine is turned off and on
it will maintain ECO mode.
i
OLF054021N
NORMAL ECO SPORTECO

5-49
Driving your vehicle
5
When Active ECO is activated:
The acceleration response may beslightly reduced as the accelerator
pedal is depressed moderately.
The air conditioner performance may be limited.
The shift pattern of the automatic transmission may change.
The engine noise may get louder.
The above situations are normal
conditions when the Active ECO sys-
tem is activated to improve fuel effi-
ciency. Limitation of Active ECO opera-
tion:
If the following conditions occur while
Active ECO is operating, the system
operation is limited even though
there is no change in the ECO indi-
cator.
When the coolant temperature is
low:
The system will be limited until
engine performance becomes nor-
mal.
When driving up a hill: The system will be limited to gain
power when driving uphill because
engine torque is restricted.
When using the automatic trans- mission Sports mode:
The system will be limited accord-
ing to the shift location.SPORT mode
SPORT mode focuses ondynamic driving by auto-
matically controlling the
steering wheel, engine
and transmission system.
When the DRIVE MODE switch is pressed and the SPORT mode is
selected, the SPORT indicator
(yellow) will illuminate.
When the SPORT mode is activat- ed, and the engine is turned off
and on it will change to NORMAL
mode. To turn on the SPORT
mode, press the DRIVE MODE
switch again.
If the system is activated: - After accelerating and releasingthe accelerator pedal, the gear
and engine speed RPM may not
drop as soon as in NORMAL
mode.
- Up-shifting is delayed.
Information
In SPORT mode, the fuel efficiency
may decrease.
i
SPORT

5-50
Driving your vehicle
Cruise Control Operation
1. CRUISE indicator
2. SET indicator
The Cruise Control system allows
you to drive at speeds above 20 mph
(30 km/h) without depressing the
accelerator pedal.
To set Cruise Control speed
1. Push the CRUISE button on thesteering wheel to turn the system
on. The CRUISE indicator will illu-
minate.
2. Accelerate to the desired speed, which must be more than 20 mph
(30 km/h).
C CR
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OLF054040
Take the following precautions:
If the Cruise Control is left on,
(CRUISE indicator light in the
instrument cluster illuminat-
ed) the Cruise Control can be
activated unintentionally.
Keep the Cruise Control sys-
tem off (CRUISE indicator light
OFF) when the Cruise Control
is not in use, to avoid inadver-
tently setting a speed.
Use the Cruise Control system
only when traveling on open
highways in good weather.
Do not use the Cruise Control
when it may not be safe to
keep the vehicle at a constant
speed:
- Driving in heavy or varying
speed traffic.
- On slippery (rainy, icy or snow covered) roads.
- Hilly or winding roads.
- Very windy areas.
WARNING
OLF054041

5-51
Driving your vehicle
5
3. Push the lever (1) down (SET-),and release it. The SET indicator
light will illuminate.
4. Release the accelerator pedal.
Information
The vehicle may slow down or speed
up slightly while going uphill or down-
hill.
To increase Cruise Control speed
Push the lever (1) up (RES+) and
hold it, while monitoring the SET
speed on the instrument cluster.
Release the lever when the
desired speed is shown and the
vehicle will accelerate to that
speed.
Push the lever (1) up (RES+) and release it immediately. The cruising
speed will increase 1.0 mph
(1.6 km/h) each time the lever is
operated in this manner. Depress the accelerator pedal.
When the vehicle attains the
desired speed, push the lever (1)
down (SET-).
i
OLF054042/Q
OLF054043/Q

5-52
Driving your vehicle
To decrease Cruise Controlspeed
Push the lever (1) down (SET-) and
hold it. Your vehicle will gradually
slow down. Release the lever at the
speed you want to maintain.
Push the lever (1) down (SET-) and release it immediately. The cruising
speed will decrease 1.0 mph
(1.6 km/h) each time the lever is
operated in this manner.
Lightly tap the brake pedal. When the vehicle attains the desired
speed, push the lever (1) down
(SET-).
To temporarily accelerate withthe Cruise Control ON
Depress the accelerator pedal. When
you take your foot off the accelerator,
the vehicle will return to the previ-
ously set speed.
If you push the lever down (SET-) at
the increased speed, the Cruise
Control will maintain the increased
speed.
Cruise Control will be canceledwhen:
Depressing the brake pedal.
Pressing the CANCEL switch
located on the steering wheel.
Pushing the CRUISE button. Both the CRUISE indicator and the SET
indicator will turn OFF.
Moving the shift lever into N (Neutral).
OLF054042/QOLF054044