Reinitialise the Electric Windows

Lost the one-touch (auto up/down) on your Audi Q3 Mk2 (F3, 2018–present) after a flat or disconnected battery? The window motor has forgotten its top and bottom limits. You re-teach them by hand in under a minute — no tools.

This is completely normal and not a sign of any damage. The Q3’s door modules store the exact end points of each window so a single tap can run the glass to the seal and stop, and so the anti-pinch can auto-reverse if it meets an obstruction. Break the 12 V supply — a battery change, a jump start, or a battery flat enough to drop out — and that memory is erased, leaving you holding the switch to move the glass until you re-teach it.

What Happened

The controller stores the fully-closed point so one-touch can stop neatly and the anti-pinch can react. Cut the power and that memory clears, leaving hold-to-move only.

How It Works on This Model

Each door has its own window motor and position sensor, so every window is calibrated on its own switch — there is no combined menu step. The relearn simply drives the glass hard into its top and bottom stops so the module can log both limits, after which one-touch and anti-pinch return for that window.

First, a Few Checks

• Make sure the 12 V battery is healthy — a weak battery mid-learn can leave the calibration incomplete.
• Turn the ignition on; the windows need live power to relearn.
• Close the door so the glass runs squarely into its seal.
• Keep the aperture clear — no arm, lead, or ice in the path as it self-closes.
• Plan to repeat the routine at each affected window switch.

Re-teaching a Window

1. Door closed, ignition on.
2. Pull the switch up to close fully and keep holding 2–3 seconds past the stop.
3. Let go, then push down to open fully, pausing at the bottom.
4. Pull up again to close fully, holding a couple of seconds at the top.
5. Release and check one-touch both ways.

Do each affected window from its own switch.

Not Working Yet?

• Hold longer at the top so the controller logs the closed limit — releasing too early is the usual reason the learn fails.
• Use the window’s own switch, not only the master pack in the driver’s door.
• Shut the door and make sure the battery is healthy during the learn.
• If the battery was very flat, let it recharge and try again once the electrics settle.
• Check nothing is dragging in the run channel (dirt or a worn seal) that stops a clean top limit.
• If a window stays dead even while you hold the switch, suspect a fuse, switch, or motor rather than lost calibration.

Once It’s Done

Once relearned, a single tap up or down should run the window the whole way and stop by itself, with the auto-reverse nudging back if it meets resistance near the top. The calibration is stored, so it holds through normal driving — you should only need to repeat it after the next battery disconnect or flat.

Frequently Asked Questions

Why did my Q3 windows stop auto-closing?

A battery disconnect or flat battery cleared the learned travel; re-initialise to bring back one-touch. Until you do, the module keeps you moving the glass by holding the switch as a safe fallback. Running the relearn on each window restores single-tap auto up and down.

How do I reset the auto window on an Audi Q3?

Hold the switch up to close fully (2–3 s), then if needed open fully and close fully again, holding at the top. Do it at each affected window’s own switch with the ignition on. Holding firmly at the closed limit is the key part that stores the memory.

Every window?

Just the one-touch ones, each from its own switch. After a battery disconnect it is normal for all of them to need it, but if only one lost its auto function you can relearn that single window on its own.

Tools?

None — it’s all done at the switches. There is no dashboard menu, coding, or workshop kit involved; you simply drive each window to its stops and hold briefly so the door module logs the travel.

Does the tailgate glass need this too?

No — this relearn is only for the electric side windows that have a one-touch function. The rear hatch is separate and isn’t part of the window calibration, so focus the routine on each door’s own up/down switch.

Could a warning light be related?

Lost one-touch on its own doesn’t trigger a dash light. If a window is fully dead or a fault light appears, a switch or motor issue may have stored a code — look it up on autodtcs.com before assuming it’s just calibration.

This is the most-missed step after battery work — see our Q3 battery guide.