2023 HYUNDAI I20 brake sensor

3-56
Safety system
OBC3030032
Just before impact, drivers often brake
heavily. Such heavy braking lowers the
front portion of the vehicle causing it
to “ride” under a vehicle with a higher
ground clearance. Air bags may not
inflate in this “under-ride” situation
because deceleration forces that are
detected by sensors may be significantly
reduced by such “underride” collisions.
OHI038166
Front air bags may not inflate in
rollover accidents because front air
bag deployment would not provide
additional occupant protection.
i Information
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inflate when the vehicle is rolled over
by a side impact collision, if the vehicle
is equipped with side and/or curtain air
bags.
OBC3030033
Air bags may not inflate if the vehicle
collides with objects such as utility poles
or trees, where the point of impact is
concentrated and the collision energy is
absorbed by the vehicle structure.

6-46
Driving your vehicle
Your vehicle may be equipped with
the ISG system, which reduces fuel
consumption by stopping and restarting
the engine automatically.
The engine starts automatically as soon
as the starting conditions are met.
NOTICE
When the engine automatically starts
by the ISG system, some warning lights
(ABS, ESC, ESC OFF, EPS or Parking
brake warning light) may turn on for a
few seconds. This happens because of
low battery voltage. It does not mean
the system is malfunctioning.
Activating the ISG
Prerequisite for activation
The ISG system operates in the following
situations.

[The driver’s seatbelt is fastened

[The driver’s door and bonnet are
closed

[The brake vacuum pressure is
adequate

[The battery sensor is activated and the
battery is sufficiently charged

[Outside temperature is not too low or
too high

[The vehicle is driven over a constant
speed and stops

[ The climate control system satisfies
the conditions

[The vehicle is sufficiently warmed up

[The incline is gradual

[The steering wheel is turned less than
180 degrees and then the vehicle
stops
Deactivating the ISG
OBC3N061014AU
If you want to deactivate the ISG system,
press the ISG OFF button.
The light on the ISG OFF button will
illuminate.
If you press the ISG OFF button again,
the system will be activated and the light
on the ISG OFF button will turn off.
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6-50
Driving your vehicle
Condition of ISG system
operation
The ISG system will operate under the
following condition:

[The driver’s seatbelt is fastened

[The driver’s door and bonnet are
closed

[The brake vacuum pressure is
adequate

[The battery sensor is activated and the
battery is sufficiently charged

[Outside temperature is not too low or
too high

[The vehicle is driven over a constant
speed and stops

[The climate control system satisfies
the conditions

[The vehicle is sufficiently warmed up

[The vehicle is not on a steep road
grade (Except Manual Transmission)

[The steering wheel is not at a sharp
angle

[The vehicle is not at a high elevation

[The front windscreen defroster is off

[You have not selected Manual shift
mode (Except Manual Transmission)

[When sufficient time has elapsed after
shifting to R (Reverse) was released
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07
7-11
WARNING

[Driving on a curve
OADAS003R
OADAS002R
OADAS001R
Forward Collision-Avoidance Assist
may not detect other vehicles,
pedestrians or cyclists in front of you
on curved roads adversely affecting
the performance of the sensors. This
may result in no warning or braking
assist when necessary. When driving on a curve, you must
maintain a safe braking distance,
and if necessary, steer the vehicle
and depress the brake pedal to
reduce your driving speed in order to
maintain a safe distance.
OADAS006R
OADAS005R
OADAS004R
Forward Collision-Avoidance Assist
may detect a vehicle, pedestrian or
cyclist in the next lane or outside the
lane when driving on a curved road.
If this occurs, the function may
unnecessarily warn the driver and
control the brake. Always check the
traffic conditions around the vehicle.

Driver assistance system
7-12

[Driving on a slope
OADAS009R
OADAS007R
OADAS008R
Forward Collision-Avoidance Assist
may not detect other vehicles,
pedestrians or cyclists in front of
you whilst driving uphill or downhill
adversely affecting the performance
of the sensors. This may result in unnecessary
warning or braking assist, or no
warning or braking assist when
necessary.
Also, vehicle speed may rapidly
decrease when a vehicle, pedestrian
or cyclist ahead is suddenly detected.
Always have your eyes on the road
whilst driving uphill or downhill and
if necessary, steer the vehicle and
depress the brake pedal to reduce
your driving speed in order to
maintain a safe distance.

07
7-13
[Changing lanes
OADAS032R[A] : Your vehicle, [B] : Lane changing vehicle
hen a vehicle moves into your lane
from an adjacent lane, it cannot
be detected by the sensor until it
is in the sensor's detection range.
Forward Collision-Avoidance Assist
may not immediately detect the
vehicle when the vehicle changes
lanes abruptly. In this case, you must
maintain a safe braking distance,
and if necessary, steer the vehicle
and depress the brake pedal to
reduce your driving speed in order to
maintain a safe distance.
OADAS033R[A] : Your vehicle, [B] : Lane changing vehicle,
[C] : Same lane vehicle
When a vehicle in front of you
merges out of the lane, Forward
Collision-Avoidance Assist may not
immediately detect the vehicle that is
now in front of you.
In this case, you must maintain a safe
braking distance, and if necessary,
steer the vehicle and depress the
brake pedal to reduce your driving
speed in order to maintain a safe
distance.

07
7-27
WARNING

[Driving on a curve
OADAS014R
OADAS016ROADAS018R
Forward Collision-Avoidance Assist
may not detect other vehicles,
pedestrians or cyclists in front of you
on curved roads adversely affecting
the performance of the sensors. This
may result in no warning or braking
assist when necessary.
When driving on a curve, you must
maintain a safe braking distance,
and if necessary, steer the vehicle
and depress the brake pedal to
reduce your driving speed in order to
maintain a safe distance.
OADAS015R
OADAS017ROADAS019R
Forward Collision-Avoidance Assist
may detect a vehicle, pedestrian or
cyclist in the next lane or outside the
lane when driving on a curved road.
If this occurs, the function may
unnecessarily warn the driver and
control the brake. Always check the
traffic conditions around the vehicle.

Driver assistance system
7-28

[Driving on a slope
OADAS012R
OADAS010ROADAS011R
Forward Collision-Avoidance Assist
may not detect other vehicles,
pedestrians or cyclists in front of
you whilst driving uphill or downhill
adversely affecting the performance
of the sensors.
This may result in unnecessary
warning or braking assist, or no
warning or braking assist when
necessary.
Also, vehicle speed may rapidly
decrease when a vehicle, pedestrian
or cyclist ahead is suddenly detected.
Always have your eyes on the road
whilst driving uphill or downhill and
if necessary, steer your vehicle and
depress the brake pedal to reduce
your driving speed in order to
maintain a safe distance.
[Changing lanes
OADAS030R
[A] : Your vehicle,
[B] : Lane changing vehicle
When a vehicle moves into your
lane from an adjacent lane, it cannot
be detected by the sensor until it
is in the sensor's detection range.
Forward Collision-Avoidance Assist
may not immediately detect the
vehicle when the vehicle changes
lanes abruptly. In this case, you must
maintain a safe braking distance,
and if necessary, steer your vehicle
and depress the brake pedal to
reduce your driving speed in order to
maintain a safe distance.