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Automatic restart when leading vehicle departs

If the engine is turned off by ISG when the vehicle is at a standstill. Then, the engine starts automatically when the front view camera detects a movement of the leading vehicle.

2025 Hyundai Tucson Smart ISG system operation image. A top-down view shows a white vehicle detecting a leading grey vehicle via a grey triangular field of view. A black arrow indicates the leading vehicle moving forward. Explains the function where the engine automatically restarts when the leading vehicle departs.

2C_SMARTISG

If the engine restarts automatically by the Smart ISG system, AUTO STOP is displayed in the utility view mode on the instrument cluster.

  • Even when the leading vehicle drives away, the Smart ISG system may not restart the engine because of limitations of the front view camera that detects the leading vehicle's movement. For more information, refer to the "Limitations of Smart ISG" section in this chapter.

  • If the engine is turned off by ISG, it can be restarted anytime by releasing the brake pedal, regardless of the Smart ISG system.