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How the Battery Reset Button Works on Hyundai

Model: Hyundai Hyundai Various
Part: Battery

Video tutorial

The "battery reset" button on Hyundai Full Hybrid vehicles is an emergency button that allows you to restart the car when the 12V auxiliary battery is completely flat: the car is off, nothing turns on, but the high-voltage traction battery still has energy.

By pressing and holding the "12V reset" button for about 3 seconds, the car transfers energy from the hybrid battery to the 12V battery, recharging it to allow normal engine start: no cables, boosters, or another car are needed.

This button is usually located near the steering wheel or in the glove compartment. This system applies to Ioniq, Kona, Tucson, Santa Fe, all Hybrid models.


Posted on 29 September 2026 by ScegliAuto


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by ScegliAuto

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