2020 Hyundai Ioniq Plug-in Hybrid start stop button

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Convenient features of your vehicle
Engine Coolant
Temperature Warning
Light
This warning light illuminates:
When the engine coolant temper-
ature is above 248°F (120°C). This
means that the engine is overheat-
ed and may be damaged.
If your vehicle is overheated, refer
to "Overheating" in chapter 6.
Master Warning Light
This indicator light illuminates:
When there is a malfunction in oper-
ation in any of the following systems:
- Forward Collision-Avoidance
Assist system malfunction
(if equipped)
- Forward Collision-Avoidance
Assist radar blocked (if equipped)
- Blind-Spot Collision Warning
system malfunction (if equipped)
- Blind-Spot Collision Warning radar
blocked (if equipped)
- Smart Cruise Control malfunction
(if equipped)
- LED Headlamp malfunction
- High Beam Assist malfunction
(if equipped)
- Tire Pressure Monitoring System
(TPMS) malfunction (if equipped)
To identify the details of the warning,
look at the LCD display.
Low Tire Pressure
Warning Light
(if equipped)
This warning light illuminates:
When you place Engine Start/Stop
button to the ON position.
- It illuminates for approximately 3
seconds and then goes off.
When one or more of your tires are
significantly underinflated.
For more details, refer to
"Tire Pressure Monitoring System
(TPMS)" in chapter 6.

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Convenient features of your vehicle
3
This warning light remains ON
after blinking for approximately 60
seconds, or repeatedly blinks ON
and OFF in 3 second intervals:
When there is a malfunction with
the TPMS.
In this case, have the vehicle inspect-
ed by an authorized HYUNDAI deal-
er as soon as possible.
For more details, refer to
"Tire Pressure Monitoring System
(TPMS)" in chapter 6.
Electronic Stability
Control (ESC) Indicator
Light
This indicator light illuminates:
When you place the Engine Start/
Stop button to the ON position.
- It illuminates for approximately 3
seconds and then goes off.
When there is a malfunction with
the ESC system.
In this case, have the vehicle inspect-
ed by an authorized HYUNDAI dealer.
This indicator light blinks:
While the ESC is operating.
For more details, refer to
"Electronic Stability Control (ESC)"
in chapter 5.
Electronic Stability
Control (ESC) OFF
Indicator Light
This indicator light illuminates:
When you place the Engine Start/
Stop button to the ON position.
- It illuminates for approximately
3 seconds and then goes off.
When you deactivate the ESC sys-
tem by pressing the ESC OFF but-
ton.
For more details, refer to
"Electronic Stability Control (ESC)"
in chapter 5.
Safe Stopping
The TPMS cannot alert you to
severe and sudden tire damage
caused by external factors.
If you notice any vehicle insta-
bility, immediately take your
foot off the accelerator pedal,
apply the brakes gradually with
light force, and slowly move to
a safe position off the road.
WARNING

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Convenient features of your vehicle
Immobilizer Indicator
Light
This indicator light illuminates for
up to 30 seconds:
When the vehicle detects the smart
key in the vehicle with the Engine
Start/Stop button in the ACC or ON
position.
- At this time, you can start the
engine.
- The indicator light goes off after
starting the engine.
This indicator light blinks for a few
seconds:
When the smart key is not in the vehi-
cle.
- At this time, you cannot start the
engine.
This indicator light illuminates for 2
seconds and goes off:
If the smart key is in the vehicle and
the Engine Start/Stop button is ON,
but the vehicle cannot detect the
smart key.
In this case, have the vehicle inspect-
ed by an authorized HYUNDAI dealer.
This indicator light blinks:
When the battery voltage of the
smart key is low.
- At this time, you can not start the
engine. However, you can start
the engine if you press the
Engine Start/Stop button with the
smart key.(For more details,
refer to "Starting the Vehicle"
in chapter 5).
When there is a malfunction with
the immobilizer system.
In this case, have the vehicle
inspected by an authorized
HYUNDAI dealer.
Turn Signal Indicator
Light
This indicator light blinks:
When you operate the turn signal
indicator light.
If any of the following occurs, there
may be a malfunction with the turn
signal system.
- The turn signal indicator light illumi-
nates but does not blink
- The turn signal indicator light blinks
rapidly
- The turn signal indicator light does
not illuminate at all
If either of these conditions occur,
have your vehicle inspected by an
authorized HYUNDAI dealer.

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Convenient features of your vehicle
3
Forward Collision-
Avoidance Assist
system warning light
(if equipped)
This indicator light illuminates:
When you set the ignition switch or
Engine Start/Stop button to the ON
position.
- It illuminates for approximately 3
seconds and then goes off.
When there is a malfunction with
FCA.
In this case, we recommend that you
have the vehicle inspected by an
authorized HYUNDAI dealer.
For more information, refer to
"Forward Collision-Avoidance
Assist (FCA)" in chapter 5.
Lane Keeping Assist
system indicator light
(if equipped)
This indicator light illuminates:
[Green] When the system operat-
ing conditions are satisfied.
[White] The system operating con-
ditions are not satisfied.
[Yellow] When there is a malfunc-
tion with the lane keeping assist
system.
In this case, we recommend that
you have your vehicle inspected by
an authorized HYUNDAI dealer.
For more details, refer to "Lane
Keeping Assist (LKA)" in chapter
5.
Icy Road Warning Light
(if equipped)
This warning light is to warn the driver
the road may be icy.
When the temperature on the out-
side temperature gauge is approxi-
mately below 4°C (40°F), the Icy
Road Warning Light and Outside
Temperature Gauge blinks and then
illuminates. Also, the warning chime
sounds 1 time.
The Icy Road Warning function can
be activated or deactivated from the
User Settings mode in the cluster
LCD display.
Information
If the icy road warning light appears
while driving, you should drive more
attentively and safely, refraining from
over-speeding, rapid acceleration, sud-
den braking or sharp turning, etc.
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Convenient features of your vehicle
LCD Display Messages
Shift to P
This message is displayed if you try
to turn off the vehicle with the shift
lever in the N (Neutral) position.
At this time, the Engine Start/Stop
button turns to the ACC position (If
you press the Engine Start/Stop but-
ton once more, it will turn to the ON
position).
Low Key Battery
This message is displayed if the bat-
tery of the smart key is discharged
while changing the Engine Start/
Stop button to the OFF position.
Press START button while turn-
ing wheel
This message is displayed if the
steering wheel does not unlock nor-
mally when the Engine Start/Stop
button is pressed.
You should press the Engine Start/
Stop button while turning the steer-
ing wheel right and left.
Check Steering Wheel Lock
System
This message is displayed if the
steering wheel does not lock normal-
ly while the Engine Start/Stop button
changes to the OFF position.
Press brake pedal to start vehicle
This message is displayed if the
Engine Start/Stop button changes to
the ACC position twice by pressing
the button repeatedly without
depressing the brake pedal.
You can start the vehicle by depress-
ing the brake pedal.
Key not in vehicle
This message is displayed if the
smart key is not in the vehicle when
you press the Engine Start/Stop but-
ton.
When attempting to start the vehicle,
always have the smart key with you.
Key not detected
This message is displayed if the
smart key is not detected when you
press the Engine Start/Stop button.
Press START button again
This message is displayed if you
were unable to start the vehicle when
the Engine Start/Stop button was
pressed.
If this occurs, attempt to start the
engine by pressing the Engine Start/
Stop button again.
If the warning message appears
each time you press the Engine
Start/Stop button, have your vehicle
inspected by an authorized
HYUNDAI dealer.

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Convenient features of your vehicle
3
Press START button with key
This message is displayed if you
press the Engine Start/Stop button
while the warning message "Key not
detected" is displayed.
At this time, the immobilizer indicator
light blinks.
Check BRAKE SWITCH fuse
This message is displayed if the
brake switch fuse is disconnected.
You need to replace the fuse with a
new one before starting the engine.
If that is not possible, you can start
the engine by pressing the Engine
Start/Stop button for 10 seconds in
the ACC position.
Shift to P to start vehicle
This message is displayed if you try
to start the engine with the shift lever
not in the P (Park) position.
Low Washer Fluid (if equipped)
This warning message is displayed
if the washer fluid level in the reser-
voir is nearly empty.
Have the washer fluid reservoir
refilled.
Low Fuel
This warning message is displayed if
the fuel tank is almost out of fuel.
When this message is displayed, the
low fuel level warning light in the
cluster will come on.
It is recommended to look for the
nearest fueling station and refuel as
soon as possible.
Add fuel as soon as possible.
Icy Road Warning (if equipped)
This warning message is to warn the
driver the road may be icy.
When the temperature on the out-
side temperature gauge is approxi-
mately below 4°C (40°F), the Icy
Road Warning message.
Information
If the icy road warning message
appears while driving, you should
drive more attentively and safely
refraining from over-speeding, rapid
acceleration, sudden braking or sharp
turning, etc.
Engine has overheated/
Engine overheated
This warning message is displayed
when the engine coolant tempera-
ture is above 120°C (248°F). This
means that the engine is overheated
and may be damaged.
If your vehicle is overheated, refer
to "Overheating" in chapter 6.
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Convenient features of your vehicle
Low/High System Temp.
Switching to Hybrid mode
(Plug-in hybrid vehicle)
This message is displayed when the
temperature of the high-voltage
(hybrid) battery is too low or high.
This warning message is to protect
the battery and the hybrid system.
Switching to Hybrid mode to
lubricate engine
(Plug-in hybrid vehicle)
This message is displayed when the
vehicle is automatically switched to
the HEV mode to lubricate engine
while the Engine Start/Stop button is
in the ON position.
Maintaining Hybrid mode to
protect engine
(Plug-in hybrid vehicle)
This message is displayed when the
[HEV] button is pressed but it is
impossible to switch from the HEV
mode to EV mode due to engine
lubrication.
OAEPHQ049838LOAEPHQ049839LOAEPHQ049836L/OAEPHQ049837L

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Convenient features of your vehicle
3
ItemsExplanation
Auto Lock
The auto door lock operation will be deactivated.
All doors will be automatically locked when the vehicle speed exceeds 9.3 mph (15
km/h).
All doors will be automatically locked if the automatic transmission shift lever is shift-
ed from the P (Park) position to the R (Reverse), N (Neutral), or D (Drive) position.
Auto Unlock
The auto door unlock operation will be canceled.
All doors will be automatically unlocked when the ignition key is removed
from the ignition switch or the Engine Start/Stop button is set to the OFF position.
All doors will be automatically unlocked if the automatic transmission/dual clutch trans-
mission shift lever is shifted to the P (Park) position.
Lock/Unlock soundTo activate or deactivate the lock/unlock sound.
If you lock the door with a remote control key again after locking the door, the alarm beeps.
Horn feedback
To activate or deactivate the horn feedback.
If the horn feedback is activated, after locking the door by pressing the lock button on the remote key,
and pressing it again within 4 seconds, the horn feedback sound will operate once to indicate that all
doors are locked (if equipped with remote key).
2. Door
❈ ❈

The information provided may differ depending on which functions are applicable to your vehicle.