The immobilizer system protects your vehicle from theft. If an improperly coded key (or other device) is used, the engine’s fuel system is disabled.
When the ignition switch is placed in the ON position, the immobilizer system indicator should come on briefly, then go off. If the indicator starts to blink, the system does not recognize the coding of the key.
Place the ignition switch to the LOCK/OFF position, then place the ignition switch to the ON position again.
The system may not recognize your key’s coding if another immobilizer key or other metal object (i.e., key chain) is near the key. The engine may not start because the metal may interrupt the transponder signal from transmitting normally.
If the system repeatedly does not recognize the coding of the key, it is recommended that you contact your HYUNDAI dealer.
Do not attempt to alter this system or add other devices to it. Electrical problems could result that may make your vehicle inoperable.
WARNING
In order to prevent theft of your vehicle, do not leave spare keys anywhere in your vehicle. Your immobilizer password is a customer unique password and should be kept confidential.
NOTICE
The transponder in your key is an important part of the immobilizer system. It is designed to give years of trouble-free service, however you should avoid exposure to moisture, static electricity and rough handling. Immobilizer system malfunction could occur.
Hyundai Kona (OS) 2018-2025 Service Manual: Components and components location
Components
1. Luggage side trim [LH]
2. Luggage side trim [RH]
3. Rear transverse trim
4. Covering shelf trim assembly
5. Luggage bord assembly
6. Luggage floor center tray assembly
7. Luggage floor net assembly
8. Car walking triangle assembly
...
Hyundai Kona (OS) 2018-2025 Service Manual: Heated Oxygen Sensor (HO2S) Description and operation
Description
Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed
both upstream and downstream of the Manifold Catalytic Converter. The sensor
output voltage varies in accordance with the air/fuel ratio.
The sensor must be hot in order to operate no ...