Hyundai Ioniq: If the 12 Volt Battery is Discharged (Plug-In Hybrid Vehicle) / Jump Starting

Hyundai Ioniq (AE) 2017-2025 Owner's Manual / What to do in an emergency / If the 12 Volt Battery is Discharged (Plug-In Hybrid Vehicle) / Jump Starting

Jump starting can be dangerous if done incorrectly. Follow the jump starting procedure in this section to avoid serious injury or damage to your vehicle. If in doubt about how to properly jump start your vehicle, we strongly recommend that you have a service technician or towing service do it for you.

WARNING

To prevent SERIOUS INJURY or DEATH to you or bystanders, always follow these precautions when working near or handling the battery:

Always read and follow instructions carefully when handling a battery.

Wear eye protection designed to protect the eyes from acid splashes.

Keep all flames, sparks, or smoking materials away from the battery.

Hydrogen is always present in battery cells, is highly combustible, and may explode if ignited.

Keep batteries out of reach of children.

Batteries contain sulfuric acid which is highly corrosive. Do not allow acid to contact your eyes, skin or clothing. If acid gets into your eyes, flush your eyes with clean water for at least 15 minutes and get immediate medical attention. If acid gets on your skin, thoroughly wash the area. If you feel pain or a burning sensation, get medical attention immediately.

When lifting a plastic-cased battery, excessive pressure on the case may cause battery acid to leak. Lift with a battery carrier or with your hands on opposite corners.
Do not attempt to jump start your vehicle if your battery is frozen.
NEVER attempt to recharge the battery when the vehicle's battery cables are connected to the battery.
The electrical ignition system works with high voltage. NEVER touch these components with the engine running or when the Engine Start/Stop button is in the ON position.

Information

An inappropriately disposed battery can be harmful to the environment and human health. Dispose of the battery according to your local law(s) or regulations.

NOTICE

To prevent damage to your vehicle:

Only use a 12-volt power supply (battery or jumper system) to jump start your vehicle.
Do not attempt to jump start your vehicle by push-starting.

Jump starting procedure

If the 12 Volt Battery is Discharged (Plug-In Hybrid Vehicle)

Jump starting procedure

1. Position the vehicles close enough that the jumper cables will reach, but do not allow the vehicles to touch. 2. Avoid fans or any moving parts in the engine compartment at all times, even when the vehicles are turned off...

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