These instructions apply to the DS 3 Mk1 (A56) 2015-2019.
For other models, please choose your vehicle here.
If the tyre-pressure warning has come on in your DS 3 (2015–2019) after you’ve adjusted the pressures or changed a wheel, you reset it from the car’s menu. The DS 3 uses sensors in the wheels, so it re-initialises the stored pressures when you confirm in the display. The light coming on after a top-up, a wheel change or a cold snap is normal — it just means the system is still comparing against the old reference and needs to be told the current pressures are the ones to watch.
How the DS 3’s System Works
The DS 3 runs a direct system: each wheel carries its own pressure sensor, and the car holds a stored reference for what ‘correct’ looks like. When you inflate the tyres to a new value, or fit a different set of wheels, that reference no longer matches, so you re-initialise it through the on-screen menu. That single confirmation tells the DS 3 to treat the pressures it currently sees as the baseline. Because the sensors read actual pressure, a sensor with a flat internal battery can also keep the warning lit even when every tyre is spot on.
Getting Ready
- Check the tyres cold — before driving, or after the car has stood for a few hours — because pressures rise as the tyres warm up.
- Set all four to the figures on the label in the driver’s door opening (or in the handbook), matching the load and speed you’re carrying.
- Don’t forget to re-initialise after fitting winter wheels or a different set — the stored values won’t match otherwise.
- Switch the ignition on for the menu; you don’t need the engine running.
- Know which display you have — the touchscreen and the monochrome cluster use different menu paths, both below.
Resetting the System
Set all four tyres to the correct cold pressures first, then switch the ignition on and use the menu that matches your DS 3:
Cars with the touchscreen:
- Open the ‘Driving assistance’ menu.
- Press ‘Under-inflation initialisation’, then select YES.
- A confirmation appears — the system is reset.
Cars with the monochrome display:
- Open ‘Personalisation-configuration’ > ‘Define vehicle parameters’.
- Select ‘Tyre pressure’ > ‘Re-initialisation’, then YES.
- A confirmation appears — the system is reset.
If the Warning Stays On
- Recheck every tyre — a single corner a few tenths below spec is enough to keep the warning lit.
- Confirm the re-initialisation in the menu — backing out before the confirmation leaves the old reference in place.
- Drive for a few minutes so all four sensors wake and report their current readings.
- Fitted a space-saver or spare? An unsensored temporary wheel can trigger the warning until the normal wheel goes back on.
- Watch for a slow puncture — if one tyre keeps dropping after every top-up, the system is doing its job and the tyre needs inspecting.
- Cold morning? A sharp overnight temperature drop can pull a tyre below the threshold; top up to the door-label figure and re-initialise.
- Still lit with correct pressures? A sensor may have a flat battery — look up the code on autodtcs.com.
What Happens Next
Once you’ve confirmed the re-initialisation with the pressures correct, the warning should clear and stay off for the rest of the trip and beyond. It may take a short drive for the light to disappear while the sensors report in. From then on the DS 3 watches against your new stored values, so it will only warn again if a tyre genuinely drops or a sensor fails.
Frequently Asked Questions
How do I reset the tyre pressure light on a DS 3?
Set the pressures, then re-initialise in the menu (touchscreen: Driving assistance > Under-inflation initialisation; monochrome: Vehicle parameters > Tyre pressure > Re-initialisation).
Does the DS 3 have sensors in the wheels?
Yes — it’s a direct system, so each wheel has its own pressure sensor. That means it reads actual pressures rather than inferring them from wheel speed, and it also means a sensor with a flat battery can keep the warning on even when all four tyres are correctly inflated.
Why won’t the warning clear?
Most often a tyre is still below spec, or the re-initialisation wasn’t confirmed with YES. Recheck all four cold, top any low corner to the door-label figure, then run through the menu again. If it persists with correct pressures, suspect a slow puncture or a failing sensor.
Do I need a tool?
No for a normal reset — setting the pressures and confirming in the menu is all it takes. A tool is only needed if a sensor is physically replaced and has to be matched to the car, which is a workshop job.
Which display do I have?
If your DS 3 has the central colour touchscreen, use the Driving assistance path. If it has the smaller monochrome trip-computer display in the cluster, use Personalisation-configuration > Define vehicle parameters. The end result is identical — both store your current pressures as the new reference.
Do I reset it after topping up one tyre?
Yes — it’s good practice. Because the system compares against a stored reference, adjusting even one tyre changes the picture. Re-initialising after any pressure change keeps the baseline accurate and stops nuisance warnings on your next cold start.
If the warning came on with other lights, decode the code on autodtcs.com.
Independent guide — not affiliated with DS. Always follow your official service manual and safety precautions. Read our full disclaimer.