These instructions apply to the Kia Stonic Mk1 (YB) 2017-Present.
For other models, please choose your vehicle here.
If the sunroof on your Kia Stonic (YB, 2017–present) stops auto-closing, won’t tilt properly, or behaves oddly after a flat or disconnected battery, it needs re-initialising. The roof motor has lost its learned positions; re-teaching them takes under a minute with the roof switch. This is a normal, built-in recovery function rather than a sign of a fault — the same routine is used at the factory after the roof is fitted, and any owner can run it from the driver’s seat without tools or a workshop visit. On the Stonic the whole sequence is driven from the single overhead roof switch, so once you know the hold-and-release trick it becomes a two-minute job you can repeat any time the memory is lost again.
Why It Happens
The sunroof controller stores its open, tilt and closed limits so it can run on one touch and auto-reverse on an obstruction. Those learned end-points let the glass know exactly where “fully closed” and “fully open” sit, and they are what makes the anti-trap feature work — the motor senses resistance against a known travel range and backs off. A power cut clears that memory. The moment the module loses its supply — a flat battery, a jump start gone wrong, or simply disconnecting the terminals to change the battery — the stored positions are wiped. Until you teach them back, the roof will often only move while you hold the switch (no one-touch), may stop short, or may refuse to auto-close, because it no longer trusts where the limits are.
Before You Start
- Park up and switch the ignition on (or start the engine) so the roof motor has a steady, healthy supply throughout the cycle.
- Fully close the sunroof glass and the interior sunshade before you begin — the routine starts from the closed position.
- Check the battery is in good health. If it is weak or was the reason for the reset, charge or replace it first, or the cycle may stall partway.
- Clear the roof track of grit, leaves or ice, and keep hands, hair and loose objects away from the opening.
- Give yourself a clear minute without interruptions — the switch has to stay held for the whole sequence.
How to Re-initialise the Sunroof
- Start the engine (or switch the ignition on).
- Make sure the sunroof and sunshade are closed.
- Press and hold the close switch. The roof will tilt and move slightly — keep holding.
- The roof then cycles automatically through its full sequence (tilt → slide open → slide closed).
- Keep the switch held until the cycle finishes, then release — the system is reset.
If It Doesn’t Complete
- Don’t release early. The single most common reason the reset fails is letting go before the glass has run right through tilt, open and closed. Hold the switch through the entire automatic cycle, even during the brief pauses.
- Clear any obstruction in the roof track and along the seals; a snag can make the motor think it has hit its limit early.
- Confirm the battery is healthy. A voltage sag mid-cycle will interrupt the learn; charge the battery or run the routine with the engine idling.
- Start from fully closed. If the glass was left part-open, close it first, then begin the hold again from the closed position.
- Try once more from the top. If the first attempt stalled, release, let everything settle, then repeat the whole hold-and-cycle sequence.
What to Expect After
Once the glass has completed its tilt-open-close run and you release the switch, one-touch operation and the auto-reverse safety feature should both work again straight away. Test it by tapping the switch for a normal one-touch open and close, and check that the tilt function responds as it should. If everything moves smoothly and stops cleanly at each limit, the re-initialisation has taken and you don’t need to do anything further.
Frequently Asked Questions
Why did my Stonic sunroof stop auto-closing?
A battery disconnect or flat battery wiped its learned limits, so the controller no longer knows where fully closed sits and disables one-touch and auto-reverse as a precaution. Re-initialising re-teaches those positions and restores normal one-touch and auto-reverse operation.
How do I reset the Kia Stonic sunroof?
With the ignition on and the glass and sunshade closed, press and hold the close switch. Let the roof tilt and run through its full open-then-closed cycle without releasing, then let go once it finishes. That single hold teaches the limits back.
Is it safe to do myself?
Yes. It is a built-in owner function with no electrical or under-car work involved. The one thing to watch is the moving glass: keep hands, hair and objects clear of the roof opening throughout the cycle, and don’t let children reach up while it runs.
Do I need a tool?
No. The entire routine is done with the overhead sunroof switch. There is no menu to enter, no scan tool, and nothing to buy — just the switch, a healthy battery and a clear roof track.
Do I have to redo this every time?
Only when the roof loses its memory again, which normally means another loss of power — a flat battery or disconnecting the terminals. In everyday use the learned positions stay stored, so a one-off reset after a battery job is usually all that is needed.
The roof only moves while I hold the switch — is it broken?
Usually not. Losing one-touch and moving only on a held switch is the classic symptom of cleared limits, which is exactly what this procedure fixes. Run the re-initialisation first; if one-touch still won’t return afterwards, then have the switch and motor checked.
Re-initialised the sunroof after a battery change? Re-teach the windows too — see our Stonic window guide. For warning lights, look up the code on autodtcs.com.
Independent guide — not affiliated with Kia. Always follow your official service manual and safety precautions. Read our full disclaimer.