Hyundai Kona: ISG (Idle Stop and Go) system / The battery sensor deactivation

The battery sensor is deactivated, when the battery is disconnected from the negative pole for maintenance purpose.

In this case, the ISG system is limitedly operated due to the battery sensor deactivation. Thus, the driver needs to take the following procedures to reactivate the battery sensor after disconnecting the battery.

ISG system malfunction
The ISG system may not operate: When there is a malfunction with the ISG sensors or the ISG system. The followings occur, when there is a malfunction with the ISG system: The auto stop indicator () ...

Prerequisites to reactivate the battery sensor
Keep the engine in the OFF status for 4 hours, and attempt to restart the engine 3 to 4 times for the batterysensor reactivation. Pay extreme caution not to connect any accessories (i.e. navigation a ...

Other information:

Hyundai Kona (OS) 2018-2025 Service Manual: Description and operation
Description The SMART KEY system is a system that allows the user to access and operate a vehicle in a very convenient way. To access the vehicle, no traditional key or remote control unit is needed. The user carries a SMART KEY FOB which does not require any conscious acti ...

Hyundai Kona (OS) 2018-2025 Service Manual: Repair procedures
Inspection Check it by the procedure below to see if the function of the ECM is normal. 1. Turn the ignition key to the "ON" position. 2. Cover the forward facing sensor. 3. ...

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