These instructions apply to the Audi A3 Mk4 (8Y) 2020-Present.
For other models, please choose your vehicle here.
The Audi A3 Mk4 (8Y, 2020–present) stores a reference set of tyre pressures, so after you inflate or change a tyre you tell it the new values are correct. You do that through the MMI menu (or a dashboard button on some cars). A lit tyre-pressure warning here usually just means the current pressures no longer match that saved reference — it’s a normal prompt to check and re-store, not a sign of a mechanical fault. Here’s how.
How It Works on This Model
The A3’s indirect system doesn’t read a psi value from inside each wheel; it compares the four wheels against the reference you save and watches for one behaving differently as it goes soft. That’s why storing the reference matters — the car saves whatever the tyres are set to at that moment as “correct,” and measures everything against it afterwards. Set the pressures accurately first, then store, and the system has a good baseline to work from.
Set the Pressures First
Inflate all four tyres cold to the figure on the driver’s door-pillar label, then store the new reference.
Before You Begin
- Set the pressures cold — before driving, or a couple of hours after, so warm tyres don’t read high.
- Use the door-pillar figure and match it to the load if a laden setting is listed.
- Get all four right before storing — the A3 saves whatever it sees as the new baseline.
- Switch the ignition on so the MMI (or the TPMS button) is live.
Method 1 — MMI Menu
- Adjust the pressures, then switch the ignition on.
- On the MMI touchscreen open ‘Vehicle’ (or the car/assist menu).
- Select ‘Service & checks’ → ‘Tyre pressure monitoring’ (wording varies slightly by software).
- Choose ‘Store tyre pressures’ / ‘SET’ and confirm. A message confirms the new reference is saved.
Method 2 — Dashboard Button
If your A3 has a physical TPMS button, adjust the pressures, switch the ignition on, then press and hold the button until it confirms (a beep or on-screen message).
If the Light Stays On
- Re-check every tyre — the system compares wheels, so one low corner triggers it.
- Always re-store after inflating — the A3’s indirect system needs the new baseline saved.
- Give it a short drive after storing so the system settles on the fresh reference.
- Watch a corner that keeps dropping — if one tyre falls again soon after you set it, suspect a slow puncture or a leaking valve.
- Fitted a space-saver or a different wheel? Re-store once the road wheel is back on and set correctly.
After the Reset
With the pressures set and the reference stored, the warning clears — usually within a short drive as the system confirms the four wheels are consistent. It’s normal for the lamp to return after a cold spell or over a few weeks as pressures naturally fall; top up to the label figure and store again to save the new baseline.
Frequently Asked Questions
How do I reset the tyre pressure light on an Audi A3?
Set the pressures cold to the door-pillar figure, then in the MMI go to Vehicle → Service & checks → Tyre pressure monitoring and store the new values (or hold the TPMS button until it confirms). The saved reference becomes the baseline and the warning clears.
Do I need a tool?
No — the A3 stores the reference through its own menu or button, so no garage equipment is needed. Because it’s an indirect system there’s nothing to program in the wheels; you simply set the pressures and save the new baseline.
Why does the light come on in cold weather?
Pressures drop as the temperature falls, so a cold morning can take a tyre below the stored reference even with no leak. Top up to the label figure and re-store the reference; the light then clears. It’s the most common harmless cause of a TPMS warning on the A3.
It came on after a wheel change — why?
You moved the reference when the pressures changed during the swap. Set all four correctly, then re-run the store (MMI or button) so the new pressures become the baseline. No tool is needed unless you’re dealing with an actual system fault rather than a moved reference.
My A3 has no TPMS button — where do I reset it?
Newer cars store the reference through the MMI rather than a physical button. Open Vehicle → Service & checks → Tyre pressure monitoring and choose ‘Store tyre pressures’ / ‘SET’. The exact wording varies slightly with software, but the option lives in that assist/service area.
If a fault code is stored, look it up on autodtcs.com. To clear a service reminder, see our A3 Mk4 service reset.
Independent guide — not affiliated with Audi. Always follow your official service manual and safety precautions. Read our full disclaimer.