brake Hyundai Sonata 2015 Workshop Manual

5-37
Driving your vehicle
5
AUTO HOLD (if equipped)
This feature keeps the brake applied
when the shift lever is in D (Drive), R
(Reverse), N (Neutral) or Sports
Mode with the feature enabled and
when the brake pedal has been
depressed to stop the vehicle.
To apply:
1. Press the [AUTO HOLD] switch.The AUTO HOLD indicator will illu-
minate white and the system will
be in the standby position. 2. When you stop the vehicle com-
pletely by depressing the brake
pedal, the Auto Hold maintains the
brake pressure to hold the vehicle
stationary. The indicator changes
from white to green.
3. The vehicle will remain stationary even if you release the brake
pedal.
4. If EPB is applied, Auto Hold will be released.
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5-38
Driving your vehicle
To release:
Press the accelerator pedal with the
shift lever in R (Reverse), D (Drive)
or Sports Mode, the Auto Hold will be
released automatically and the vehi-
cle will start to move. The indicator
changes from green to white.
To cancel:
1. Depress the brake pedal.
2. Press the [AUTO HOLD] switch.The AUTO HOLD indicator will
turn off.
Information
• The Auto Hold does not operatewhen:
- The driver's seat belt is unbuckledand the driver's door is opened
- The engine hood is opened
- The trunk is opened
- The shift lever is in P (Park)
- The EPB is applied
• For your safety, the Auto Hold auto- matically switches to EPB when:
- The driver's seat belt is unbuckledand the driver's door is opened
- The engine hood is opened with the shift lever in D (Drive)
- The trunk is opened with the shift lever in R (Reverse)
- The vehicle is in a standstill for more than 10 minutes
- The vehicle is standing on a steep slope
- The vehicle moved several times (Continued)
i
To prevent, unexpected and
sudden vehicle movement,
ALWAYS press your foot on the
brake pedal to cancel the Auto
Hold before you:
- Drive downhill.
- Drive the vehicle in R (Reverse).
- Park the vehicle.
WARNING
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5-39
Driving your vehicle
5
(Continued)In these cases, the Parking Brake
Warning Light comes on, the AUTO
HOLD indicator changes from
green to white, and warning sounds
and a message will appear to inform
you that EPB has been automatical-
ly engaged. Before driving again,
depress the brake pedal, check the
surrounding area near your vehicle
and release the parking brake man-
ually with the EPB switch.
• If AUTO HOLD indicator changes to yellow, the Auto Hold is not work
properly. Take your vehicle to an
authorized HYUNDAI dealer and
have the system checked.
• If there is a malfunction with the driver's door, hood or trunk open
detection system, the Auto Hold
may not work properly. Take your
vehicle to an authorized HYUNDAI
dealer and have the system checked.Warning messages
Parking brake automatically locked
When the EPB is applied from Auto
Hold, a warning will sound and a
message will appear.
AUTO HOLD deactivating.
Press brake pedal
When the conversion from Auto Hold
to EPB is not working properly a
warning will sound and a message
will appear.
Information
Depress the brake pedal when the
above message appears for the Auto
Hold and EPB may not activate.
i
OLF044411N
OLF044408N

5-40
Driving your vehicle
Press brake pedal to deactivate
AUTO HOLD
If you did not apply the brake pedal
when you release the Auto Hold by
pressing the [AUTO HOLD] switch, a
warning will sound and a message
will appear.
AUTO HOLD conditions not met.
Close door, hood, trunk, and fasten
seatbelt
When you press the [AUTO HOLD]
switch, if the driver's door, engine
hood and trunk are not closed or the
driver's seat belt is not fastened, a
warning will sound and a message
will appear on the LCD display. In
that time, press the [AUTO HOLD]
button after closing the driver's door,
engine hood and trunk and fastening
the seat belt.
Anti-lock Brake System (ABS)
OLF044407NOLF044409N
An Anti-Lock Braking System
(ABS) or an Electronic Stability
Control (ESC) system will not
prevent accidents due to
improper or dangerous driving
maneuvers. Even though vehi-
cle control is improved during
emergency braking, always
maintain a safe distance
between you and objects ahead
of you. Vehicle speeds should
always be reduced during
extreme road conditions. The
braking distance for cars
equipped with ABS or ESC may
be longer than for those without
these systems in the following
road conditions.(Continued)
WARNING

5-41
Driving your vehicle
5
ABS is an electronic braking system
that helps prevent a braking skid.
ABS allows the driver to steer and
brake at the same time.
Using ABS
To obtain the maximum benefit from
your ABS in an emergency situation,
do not attempt to modulate your
brake pressure and do not try to
pump your brakes. Depress your
brake pedal as hard as possible.
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 ABS is
active.
ABS does not reduce the time or dis-
tance it takes to stop the vehicle.
Always maintain a safe distance from
the vehicle in front of you.
ABS will not prevent a skid that
results from sudden changes in
direction, such as trying to take a
corner too fast or making a sudden
lane change. Always drive at a safe
speed for the road and weather con-
ditions.ABS cannot prevent a loss of stabili-
ty. Always steer moderately when
braking hard. Severe or sharp steer-
ing wheel movement can still cause
your vehicle to veer into oncoming
traffic or off the road.
On loose or uneven road surfaces,
operation of the anti-lock brake sys-
tem may result in a longer stopping
distance than for vehicles equipped
with a conventional brake system.
The ABS warning light ( ) will stay
on for several seconds after the igni-
tion switch is in the ON position.
During that time, the ABS will go
through self-diagnosis and the light
will go off if everything is normal. If
the light stays on, you may have a
problem with your ABS. Contact an
authorized HYUNDAI dealer as soon
as possible(Continued)
Drive your vehicle at reduced
speeds during the following
conditions:
Rough, gravel or snow-cov-
ered roads.
On roads where the road sur-
face is pitted or has different
surface height.
Tire chains are installed on
your vehicle.
The safety features of an ABS
or ESC equipped vehicle should
not be tested by high speed
driving or cornering. This could
endanger the safety of yourself
or others.

5-42
Driving your vehicle
Information
When you jump start your vehicle
because of a drained battery, the ABS
warning light ( ) may turn on at the
same time. This happens because of
the low battery voltage. It does not
mean your ABS is malfunctioning.
Have the battery recharged before
driving the vehicle.
i
If the ABS warning light ( ) is
on and stays on, you may have
a problem with the ABS. Your
power brakes will work normal-
ly. To reduce the risk of serious
injury or death, contact your
HYUNDAI dealer as soon as
possible.When you drive on a road hav-
ing poor traction, such as an icy
road, and apply your brakes
continuously, the ABS will be
active continuously and the
ABS warning light ( ) may
illuminate. Pull your car over to
a safe place and turn the engine
off.
Restart the engine. If the ABS
warning light is off, then your
ABS system is normal.
Otherwise, you may have a
problem with your ABS system.
Contact an authorized HYUNDAI
dealer as soon as possible.
CAUTIONWARNING

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
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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