These instructions apply to the Ford Fiesta Mk8 (2017-2023).
For other models, please choose your vehicle here.
After the 12 V battery on a Ford Fiesta Mk8 (2017–2023) has been disconnected or gone flat, the one-touch windows often stop behaving — they only crawl up while you hold the switch, and the auto and anti-trap features drop out. The motors have lost their learned end-stops; re-teaching them takes under a minute per window and needs no tools.
Why It Happens
Each window motor remembers where the glass reaches the top and bottom, so one-touch knows when to stop and the pinch-protection knows what’s normal. Cut the power and that memory clears, so the window reverts to manual-only until you re-teach it.
Re-initialise Each Window
Work one door at a time from its own switch, with the ignition on. The sequence runs within about 30 seconds:
- Close the window if it isn’t already.
- Press and hold the switch in the OPEN direction until the glass is fully down, then keep holding a few extra seconds, and release.
- Pull and hold the switch in the CLOSE direction until the glass is fully up, and hold a few extra seconds.
- Test one-touch up and down — a single tap should now run the window automatically.
Repeat for each window that lost the function.
If One-Touch Still Doesn’t Return
- Do the whole sequence again — the extra hold at each end is what writes the limit; rushing it is the usual reason it doesn’t take.
- Make sure the glass reaches the true top and bottom — grit or ice in the runner can stop it short.
- If a window bounces back down near the top, that’s the anti-trap reacting to an unlearned limit — finish the relearn and it settles.
Frequently Asked Questions
Why did my Fiesta windows lose auto after the battery was off?
Cutting power wipes the stored end-stops, so auto and anti-trap switch off until each window is re-taught.
The window only moves while I hold the switch — same fault?
Yes — that’s the “limits lost” state. The open-fully / close-fully hold routine restores one-touch.
Do I need any tools?
No — it’s done entirely from the door switches with the ignition on.
Should I do this after every battery job?
Yes — run it alongside any battery disconnection or replacement so the windows come back to full function.
To clear an oil-service reminder after maintenance, see our Fiesta Mk8 service reset guide. For warning lights, look up the code on autodtcs.com.
Independent guide — not affiliated with Ford. Always follow your official service manual and safety precautions. Read our full disclaimer.