Reinitialise the Electric Windows

After the battery on your DS 3 Crossback (2019–present) has been disconnected or gone flat, the one-touch function on the windows usually stops working — the glass only moves while you hold the switch, and the anti-pinch may behave oddly. Re-initialising each window restores it in seconds, with no tools.

This is one of the most common “something stopped working after the battery” questions on the DS 3 Crossback, and it is not a fault. The switch and motor are fine; the window has simply lost the end positions it needs to run itself. Until you re-teach them, one-touch raise and lower are disabled and the glass creeps only while your finger stays on the switch.

How It Works on This Model

Each window motor on the DS 3 Crossback keeps a position count and stores where the glass sits fully open and fully closed. Those stored limits are what let a single press drive the window the whole way, and they feed the anti-pinch protection that reverses the glass if it meets resistance near the top. Because the memory is held on 12 V power, disconnecting the battery or letting it go flat clears it, and the window reverts to hold-to-move until it is re-initialised. The relearn is done entirely from the door switch — no fuses, no tools.

First, a Few Checks

• Switch the ignition on (or set the car to accessory) so the windows have power.
• Keep hands and fingers clear of the glass throughout — with anti-pinch relearning, treat it as live.
• Work one window at a time from that door’s own switch.
• If the battery was flat, make sure it is properly charged first so voltage doesn’t sag mid-learn.
• Clear any ice or debris from the window channel so the glass can reach a true end stop.

Re-initialising a Window

1. Pull the switch UP to fully close the window and keep holding for a moment after it stops, then release.
2. Press the switch DOWN to fully open the window and again hold briefly after it stops, then release.
3. Pull UP and hold to fully close once more, holding a few seconds at the top, then release.
4. Test that one-touch up and down now work, and repeat for each window that lost the function.

If It Won’t Stay Set

• Hold the switch past the end stop in each direction — the motor must feel the true limit to learn it.
• Make sure the glass runs freely — a sticky, dirty or iced channel can stop the relearn completing.
• Don’t release early — if you let go before the hold at the top, start that window again from step one.
• Try with the engine running if a recent flat left the battery weak; steadier voltage helps the learn hold.
• If anti-pinch keeps bouncing the glass back down, run the full close-open-close sequence again slowly so it re-references the top.
• Persistent fault? A window-module or switch issue can store a code — look it up on autodtcs.com.

Once It’s Done

Once the limits are stored, a single tap runs the glass fully up or down, it stops cleanly at the top, and the anti-pinch reversal returns to normal. The setting stays until the next time the battery is disconnected, so you only need to repeat this after future battery work.

Frequently Asked Questions

Why did my DS 3 Crossback windows stop auto-closing?

The one-touch memory is held on 12 V power, so it is cleared whenever the battery is disconnected or goes flat. With no stored limits the window drops to a safe hold-to-move mode. The switch relearn re-teaches the fully-open and fully-closed positions and restores the automatic one-touch function — nothing is broken.

Do I need tools?

No — the whole relearn is done from the window switch in the door. There are no fuses to pull and no menus to enter. Sit in the affected seat, run the close-open-close sequence for that window, and it is done in a few seconds per glass.

Which order, up or down?

Fully close and hold, then fully open and hold, then fully close and hold again — that sequence lets the motor re-reference both end stops and completes the relearn. Holding briefly past each stop is the important part; releasing too early leaves the learn unfinished.

Do I have to do every window?

Only the windows that lost one-touch need it, but after a battery job it is quick to run all of them so none is missed. Each is independent, so one can relearn while another still needs doing. Do each from its own door switch.

Why does the glass drop back down when it nears the top?

That is the anti-pinch protection working without stored limits — it can’t tell the top of travel from an obstruction, so it reverses. Completing the close-open-close relearn gives it a proper reference again. If it still bounces afterwards, check the channel for grit or a worn seal.

Could this happen again?

Yes, any time the 12 V supply is interrupted — a future battery replacement, a jump-start, or a flat battery while parked. It is harmless, just a memory that gets wiped. Keep the switch sequence in mind and you can restore one-touch in under a minute per window.

Just reconnected the battery? Our DS 3 Crossback battery disconnect/reconnect guide lists the windows among the items to re-initialise.