2023 HYUNDAI TUCSON brake sensor

03
3-65
ONX4030051
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 “underride” situation
because deceleration forces that are
detected by sensors may be significantly
reduced by such “underride” collisions.
ONX4030053
Front air bags may not inflate in
rollover accidents because front air bag
deployment would not provide additional
occupant protection.
However, the side and curtain air bags
and front center air bag may inflate in a
rollover situation, when it is detected by
the rollover sensor.
ONX4030052
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.

05
5-19
Start-up with Digital Key
1. After placing your registered
smartphone onto the authentication
pad (same location as the wireless
charging pad), step on the brake and
press the Engine Start/Stop button.
2. After start-up, the digital key data
will be automatically updated. It
takes 5 to 20 seconds, after that,
the smartphone can be go into the
wireless charging mode automatically.
Once the engine started, you can
remove the smartphone from the pad.
ONX4050015
[A] : Wireless Charging Pad (In-vehicle Authentication Pad)
Information
After reconnecting the vehicle battery
power supply or charging the battery, it
may take time to operate due to remote
renewal of security information. In this
case, when you lock or unlock the doors
using your smartphone Digital Key, it
may take a little longer for the vehicle to
authenticate. Hold your smartphone near
the NFC door handle sensor for a few
seconds or until you hear the door locks
actuate. Note that if your vehicle is parked in an
area where cell coverage is weak, the
smartphone Digital Key can still be used on
for a limited number of times to unlock and
start your vehicle.
After starting your vehicle, it is
recommended to leave your smartphone
on the wireless charging pad until cell
phone service is stronger and digital key
authentication can occur.
Once authentication is complete, the
wireless charger will turn on (wireless
charging LED will illuminate).
CAUTION
The engine can be turned on if the
registered smartphone or card key is
placed on the interior authentication
pad (wireless charger). Do not leave
children unattended in the vehicle
when using the smartphone Digital Key.
Serious injury or death can occur.
Do not leave anyone in the vehicle
without knowledge of the Digital Key
system when using the smartphone
Digital Key. Always have the registered
digital key (smartphone) or card key
with you to prevent vehicle theft when
leaving the vehicle.
For more information, refer to the
Engine Start/Stop button in chapter 6.

05
5-79
Exterior lights
Lighting control
To operate the lights, turn the knob at
the end of the control lever to one of the
following positions:
ODN8059200
1. OFF position
2. AUTO headlamp position
3. Position lamp position
4. Headlamp position
Daytime Running Light (DRL)
The Daytime Running Lights (DRL) can
make it easier for others to see the front
of your vehicle during the day, especially
after dawn and before sunset. The
Daytime Running Lights (DRL) should
be illuminated whenever you are driving
during daylight hours. The DRL system
will be ON when the headlamp stalk is
in the OFF or the AUTO Position (when
daylight is detected) and the Electronic
Parking Brake (EPB) is released.
The DRL system will turn off when:
• The headlamps are ON.
• The parking brake is applied.
• The vehicle is turned off.
• Parking Brake is applied
ODN8059201
AUTO headlamp position
The position lamp and headlamp will
be turned ON or OFF automatically
depending on the amount of daylight as
measured by the ambient light sensor (1)
at the upper end of the windshield glass.
Even with the AUTO headlamp feature
in operation, it is recommended to
manually turn ON the headlamps when
driving at night or in a fog, driving in the
rain, or when you enter dark areas, such
as tunnels and parking facilities.
NOTICE
• Do not cover or spill anything on the
sensor (1) located at the upper end of
the windshield glass.
• Do not clean the sensor using
a window cleaner, the cleanser
may leave a light film which could
interfere with sensor operation.
• If your vehicle has window tint or
other types of metallic coating on
the front windshield, the AUTO
headlamp system may not work
properly.
LIGHTING

Driving your vehicle6-44
IDLE STOP AND GO (ISG) SYSTEM
Idle Stop and Go helps reduce fuel
consumption by automatically shutting
down the engine, when the vehicle is
at a standstill (i.e. red stop light, stop
sign, and traffic jam) subject to certain
prerequisite conditions being satisfied as
listed below.
The engine is automatically started upon
satisfying the starting conditions.
ISG system is always active, when the
engine is running.
Information
When the engine is automatically started
by ISG system, warning lights (i.e. ABS,
ESC, ESC OFF, EPS, and parking brake
warning light) may illuminate for a few
seconds due to low battery voltage.
However, it does not indicate a
malfunction with ISG system.
ISG system operation
Prerequisite for activation
ISG system operates in the following
situations.
• The driver's seatbelt is fastened
• The driver's door and hood 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
• ISG related parts are working properly
• The incline is gradual
• The steering wheel is turned less than
180 degrees and then the vehicle
stops
Information
If the ISG light (white) is turned on on the
instrument cluster and does not meet the
ISG system operating conditions, the ISG
system is not activated.
When the ISG light (yellow) is on while the
ISG system meets operating conditions, we
recommend that the system be inspected
by an authorized HYUNDAI dealer.

Driving your vehicle
6-48
Forced to restart engine
The engine is automatically restarted in
the following situations.
• The brake vacuum pressure is low
• The engine has stopped for about 5
minutes
• The air conditioning is ON with the fan
speed set to a certain high level
• The front defroster is ON
• The battery is weak
• The cooling and heating performance
of the climate control system is
unsatisfactory
• The vehicle is shifted to P (Park) or R
(Reverse) when Auto Hold is activated
• The door is opened or the seatbelt
is unfastened when Auto Hold is
activated
• The EPB switch is pressed when Auto
Hold is activated
The Auto Stop (
) indicator blinks in
green for 5 seconds on the instrument
cluster when the engine is restarted.
WARNING
When the engine is in Idle Stop mode,
the engine may restart without the
driver taking any action. Before leaving
the vehicle or working on the engine
compartment, turn off the engine by
pressing the ENGINE START/STOP
button to the OFF position.
ISG malfunction
ISG system may not operate when there
is a malfunction with the ISG sensors or
ISG system.
The following will occur, when there is a
malfunction with the ISG system:
• The Auto Stop (
) indicator will
illuminate in yellow on the instrument
cluster.
• The light on the ISG OFF button will
illuminate.
We recommend that you contact an
authorized HYUNDAI dealer.
NOTICE
If the AGM battery is reconnected or
replaced, ISG system will not operate
immediately. If you want to use the
system, the battery sensor needs to be
calibrated for approximately 4 hours
with the engine off.
After calibration, turn the engine on and
off 2 or 3 times.

07
7-11
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.
OADAS006
OADAS005
OADAS004
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, Forward Collision-
Avoidance Assist may unnecessarily
warn the driver and control the
brake. Always check the traffic
conditions around the vehicle.•
Driving on a slope
OADAS009
OADAS008
OADAS007
Forward Collision-Avoidance Assist
may not detect other vehicles,
pedestrians or cyclists in front of
you while driving uphill or downhill
adversely affecting the performance
of the sensors.

Driver assistance system
7-12
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
while 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.•
Changing lanes
OADAS032[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 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
OADAS014
OADAS016OADAS018
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.
OADAS015
OADAS017OADAS019
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, Forward Collision-
Avoidance Assist may unnecessarily
warn the driver and control the
brake. Always check the traffic
conditions around the vehicle.