These instructions apply to the DS 7 Crossback Mk1 (X74) 2017-Present.
For other models, please choose your vehicle here.
If the tyre-pressure warning has appeared in your DS 7 Crossback (2017–present) after you’ve adjusted the pressures or changed a wheel, you need to store the new pressures as the reference — done through the touchscreen on the DS. Here’s how.
The amber tyre symbol (often shown with an exclamation mark) is the car telling you the pressures no longer match the values it has memorised. On its own it is a warning, not a fault: nine times out of ten it comes on because a tyre has lost a little air over time, the weather has turned colder, or you have just had the wheels off. Once the pressures are correct and you have re-stored the reference, it goes out and stays out.
How the DS 7’s System Works
Rather than showing a pressure figure for each individual corner, the DS 7 works by memorising your correct pressures as a reference set and then watching for a tyre that drops away from it. That is why the fix is not simply “pump the tyre up” but “pump it up and then tell the car this is now correct” — the reset writes the current pressures into memory as the new baseline. Because it learns a baseline, the reset only makes sense once the pressures are actually right; store it too soon and you teach the car the wrong numbers.
Getting Ready
- Check and set the pressures with the tyres cold — after the car has been standing, or driven only a mile or two. Warm tyres read high and give a false setting.
- Use the figures on the label in the driver’s door shut (the pillar you can see with the door open); match front and rear to the load you are carrying.
- Don’t forget to set the spare if your car carries a full-size one.
- Have the car stationary with the ignition on so you can reach the touchscreen menus.
When to Reset
- After checking or adjusting the tyre pressures.
- After changing one or more wheels or tyres, or fitting winter wheels.
Resetting the System
- Set all four tyres to the correct cold pressures (placard in the driver’s door shut) — the system stores whatever is set.
- On the touchscreen, open Driving assistance (or the vehicle menu) and select Tyre pressure.
- Choose reset / initialise and confirm with the pressures correct.
- The current pressures become the new reference and the warning clears.
If the Warning Stays On
- Recheck every tyre — one below spec keeps the warning on and blocks the reset.
- Reset with correct, cold pressures only — resetting on a soft tyre teaches the wrong value.
- Look for a slow puncture — if one corner keeps dropping over a few days, a nail or a leaking valve is the likely cause; the light will keep returning until it is repaired.
- Re-store after any wheel swap — fitting winter wheels, a spare or a space-saver changes what the car should treat as normal, so it needs the reference re-taught.
- Give it a short drive — the system confirms the new baseline as you move off, so the light may take a few minutes and a little speed to clear.
- Still on with everything correct? A sensor or system fault may be involved — look up the code on autodtcs.com.
What Happens Next
Once you confirm the reset with the pressures correct, the amber warning should go out either straight away or within the first few minutes of driving. From then on the car judges everything against the fresh reference, so the light will only return if a tyre genuinely drops below it again. That makes a light that comes straight back a useful early warning of a slow leak — worth a proper look rather than another reset.
Frequently Asked Questions
How do I reset the tyre pressure warning on a DS 7 Crossback?
Set all four tyres to the correct cold pressures from the door-pillar label, then on the touchscreen open Driving assistance (or the vehicle menu), select Tyre pressure, and choose reset / initialise. Confirm with the pressures correct and the current values are stored as the new reference, clearing the warning.
Is there a physical button?
The reset is via the touchscreen on this model; set the pressures first, then confirm in the menu.
Why won’t the warning clear?
Usually a tyre still below spec, or the reset was done with warm or incorrect pressures. Set every tyre cold to the door-pillar figure, then repeat the reset. If it clears but returns within a day or two, suspect a slow puncture rather than a system problem.
Do I need a tool?
No for a normal reset; a tool is only needed if a sensor is replaced and must be matched to the car. Everyday resetting after inflating or a wheel change is done entirely from the touchscreen.
Why does the warning appear in cold weather?
Air contracts as the temperature falls, so a tyre set correctly in mild weather can read low on a cold morning — roughly a little pressure is lost for every several degrees of drop. Top the tyres back up to the label figure when cold and re-store the reference; it is normal seasonal behaviour, not a fault.
Should I reset it after fitting winter wheels?
Yes. A different set of wheels and tyres changes what the system treats as normal, so store the reference again once the winter set is fitted and inflated correctly. Do the same when you switch back to the summer wheels in spring.
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.