Hyundai Tucson: Warning and Indicator Lights / Immobilizer indicator light
Without smart key

This indicator light illuminates:
- When the vehicle detects the
immobilizer in the key with the
ignition switch in the ON position.
- At this time, you can start the
engine.
- The indicator light goes off after
starting the engine.
This indicator light blinks:
- Whenever there is a malfunction with
the immobilizer system, have the
vehicle inspected by an authorized
HYUNDAI dealer.
With smart key

This indicator light illuminates for up to
30 seconds:
- When the vehicle detects the smart
key in the vehicle with the Button
Start ignition switch 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
vehicle, 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 Button Start ignition switch is
ON, but the vehicle cannot detect the
smart key, have the vehicle inspected
by an authorized HYUNDAI dealer.
This indicator light blinks:
- Whenever there is a malfunction with
the immobilizer system, have the
vehicle inspected by an authorized
HYUNDAI dealer.
Electronic Stability Control
(ESC) indicator light
This indicator light illuminates:
When the ignition switch is in the
ON position. The Electronic Stability
Control indicator light ill ...
This indicator light illuminates:
When the ignition switch is in the ON
position. The downhill brake control
indicator light illuminates for about 3
seconds and then goes off.
When yo ...
Other information:
Hyundai Tucson (NX4) 2022-2025 Service Manual: Repair procedures
- Inspection
Front Door Lock Module Inspection
1.Remove the front door trim.(Refer to Body - "Front Door Trim")
2.Disconnect the connectors from the actuator.
3.Check actuator operation by connecting power and ground according to the table.PinDescription
DriverPanssenger
1-M2
2-M3
3COM- ...
Hyundai Tucson (NX4) 2022-2025 Owner's Manual: Starting the vehicle
Some models are equipped with a
Button Start ignition switch instead of a
key cylinder. You can leave your smart
key in your pocket or purse when you
start your vehicle.
For more information, refer to the
“Button Start Ignition Switch” section in
Chapter 6.
Information
If the smar ...