These instructions apply to the Kia Stonic Mk1 (YB) 2017-Present. For other models, please choose your vehicle here.
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Disconnecting the 12 V battery on a Kia Stonic (YB, 2017–present) is a simple engine-bay job. This guide covers safe disconnection and what the car needs re-taught afterwards.
Where the Battery Is
The 12 V battery sits in the engine bay, behind a cover. The petrol and diesel Stonic has no high-voltage system to worry about; the 48V mild-hybrid version keeps the 12 V battery here too — only the small 48V unit is a specialist item.
Disconnecting
- Switch the ignition off, remove the smart key and wait a minute for the electronics to sleep.
- Disconnect the negative (−) terminal first and tuck the lead aside.
- If removing the battery, disconnect the positive (+) next, then the clamp.
Reconnecting & Re-teaching
- Reconnect positive (+) first, then negative (−) last.
- Reset the clock; the radio usually reloads on its own.
- Re-initialise the one-touch windows — see our Stonic window guide.
- If your car has a sunroof, it may also need re-initialising.
The Stonic doesn’t need the battery coded.
Frequently Asked Questions
Which terminal first on the Stonic?
The negative (−) first, and reconnect it last.
Does the Kia Stonic battery need coding?
No — just fit it and re-teach the windows (and sunroof if fitted).
Will I lose my radio?
No code is normally needed — just reset the clock.
Why won’t my windows auto-close now?
The power cut cleared their learned position. Run the quick re-initialise.
For any warning light that stays on, look up the code on autodtcs.com. To clear the service reminder, see our Stonic service reset.
Disclaimer: The information on this page is provided for general guidance only. Always follow your official service manual and safety precautions when working on your vehicle. We are not responsible for errors, omissions, or any damage resulting from the use of this information.
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