Hyundai Santa Fe: Idle Stop and Go (ISG) / ISG malfunction

Hyundai Santa Fe (TM) 2019-2025 Owner's Manual / Driving your vehicle / Idle Stop and Go (ISG) / ISG malfunction

ISG system may not operate when there is a malfunction with the ISG sensors or ISG system.

The following will occur, when there is a malfunction with the ISG system:

The Auto Stop () indicator will illuminate in yellow on the instrument cluster.
The light on the ISG OFF button will illuminate.

Contact an authorized HYUNDAI dealer.

Forced to restart engine

The engine is automatically restarted in the following situations. The brake vacuum pressure is low The engine has stopped for about 5 minutes The air conditioning is ON with the fan speed set to a certain high level The front defroster is ON The battery is weak The cooling and heating performance of the climate control system is unsatisfactory The vehicle is shifted to P (Park) or R (Reverse) when Auto Hold is activated The door is opened or the seatbelt is unfastened when Auto Hold is activated The EPB switch is pressed when Auto Hold is activated The Auto Stop () indicator blinks in green for 5 seconds on the instrument cluster when the engine is restarted...

Calibrating the Battery Sensor

[A] : Battery sensor 1. Turn off the engine. 2. Disconnect all electronic devices that were additionally installed after the vehicle was delivered, such as navigation, dashcam, etc...

Other information:

Hyundai Santa Fe (TM) 2019-2025 Service Manual: Power Door Mirror Assembly. Repair procedures

Inspection 1. Disconnect the negative (-) battery terminal. 2. Remove the door trim. (Refer to Body - "Front Door Trim") 3. Disconnect the power door mirror connector (A) from the harness...

Hyundai Santa Fe (TM) 2019-2025 Owner's Manual: USB charger

The USB charger is designed to recharge batteries of small size electrical devices using a USB cable. The electrical devices can be recharged when the Engine Start/Stop button is in the ACC or ON (or START) position. The battery charging state may be monitored on the electrical device...