The ISG system is to reduce the 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).
The engine is automatically started upon satisfying the starting conditions.
The ISG system is always active, when the engine is running.
Information
When the engine is automatically started by the ISGsystem, some warning lights (i.e. ABS, ESC, ESC OFF, EPS, and parking brake warning light) may illuminate for a few seconds due to the low battery voltage. However, it does not indicate a malfunction with the ISG system.
Hyundai Kona (OS) 2018-2025 Service Manual: ESP Control Unit Repair procedures
Removal
1.
Turn the ignition switch OFF and then disconnect the negative (-) battery
cable.
2.
Separate the intercooler inlet hose (A) from the turbocharger and then
remove the inter cooler inlet pipe (B). [Gasoline 1.6 T-GDI]
...
Hyundai Kona (OS) 2018-2025 Service Manual: Dynamic Damper Repair procedures
Removal
1.
Remove the front driveshaft.
(Refer to Driveshaft Assembly - "Front Driveshaft")
2.
Remove the TJ joint assembly.
(Refer to Driveshaft Assembly - "TJ Joint")
3.
...