Hyundai Ioniq: Battery (12 Volt, Plug-In Hybrid Vehicle) / For Best Battery Service

Hyundai Ioniq (AE) 2017-2025 Owner's Manual / Maintenance / Battery (12 Volt, Plug-In Hybrid Vehicle) / For Best Battery Service

Hyundai Ioniq. For Best Battery Service

Keep the battery securely mounted.
Keep the battery top clean and dry.
Keep the terminals and connections clean, tight, and coated with petroleum jelly or terminal grease.
Rinse any spilled acid from the battery immediately with a solution of water and baking soda.

Battery (12 Volt, Plug-In Hybrid Vehicle)

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...

Battery Recharging

WARNING Always follow these instructions when recharging your vehicle's battery to avoid the risk of SERIOUS INJURY or DEATH from explosions or acid burns: Before performing maintenance or recharging the battery, turn off all accessories and place the Engine Start/ Stop button in the OFF position...

Other information:

Hyundai Ioniq (AE) 2017-2025 Service Manual: Components and components location

C..

Hyundai Ioniq (AE) 2017-2025 Owner's Manual: Immobilizer System

The immobilizer system helps protects your vehicle from theft. If an improperly coded key (or other device) is used, the engine's fuel system is disabled. When the Engine Start/Stop button is placed in the ON position, the immobilizer system indicator should come on briefly, then go off...