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

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 Owner's Manual: Driving your vehicle

WARNING Carbon monoxide (CO) gas is toxic. Breathing CO can cause unconsciousness and death. Engine exhaust contains carbon monoxide which cannot be seen or smelled. Do not inhale engine exhaust. If at any time you smell engine exhaust inside the vehicle, open the windows immediately...

Hyundai Santa Fe (TM) 2019-2025 Service Manual: Engine Control Module (ECM). Schematic diagrams

ECM Terminal and Input/Output signal ECM Terminal Function Connector A Pin No Description Connected to 1 Power ground Chassis Ground 2 - - 3 - - 4 - - 5 - - 6 Fuel Sender Signal Fuel Sender 7 - - 8 - - 9 - - 10 - - 11 - - 12 - - 13 - - 14 - - 15 Stop Lamp Signal Stop Lamp 16 Brake Test Switch Brake Switch 17 18 - 19 - 20 Output Speed (Supply) ATM Solenoid Valve (Otput Speed) 21 Input Speed (Supply) ATM Solenoid Valve (Input Speed) 22 - - 23 - - 24 - - 25 - - 26 - - 27 [A/T] SOL...