These instructions apply to the DS 3 Crossback Mk1 (D34) 2019-Present. For other models, please choose your vehicle here.
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Your DS 3 Crossback (2019–present) switches the engine off at a standstill to save fuel and restarts it as you pull away. If you’d rather keep it running — in heavy traffic or while manoeuvring — you can switch the system off in one press. Here’s how, and why it’s back on next drive. (This applies to the petrol and diesel models; the E-Tense electric version has no engine stop/start.)
Turning the System Off
- With the engine running, press the stop/start button (an “A” inside a circular arrow), usually near the gear selector.
- You can also switch it off via the touchscreen under Driving / Stop & Start.
- A message or indicator confirms the system is off; the engine now stays running at a standstill.
The system defaults back to on each time you start the car, so disabling it is a per-drive choice — press the button again to re-enable it.
When the DS 3 Crossback Disables Stop/Start Itself
Even with the system on, the car won’t stop the engine when it isn’t appropriate, so continued idling isn’t necessarily a fault. It keeps the engine running when, for example, the cabin is still reaching temperature, the engine is cold, or the 12 V battery charge is low.
If Stop/Start Stops Working
- Check the battery. The system relies on a healthy, charged 12 V battery; an ageing one is the usual reason the engine stops cutting out.
- Seat belt fastened, doors and bonnet closed — open ones inhibit it.
- Fault light? A charging or sensor issue stores a code — decode it on autodtcs.com.
Frequently Asked Questions
How do I turn off stop/start on a DS 3 Crossback?
Press the “A” stop/start button, or switch it off in the touchscreen under Driving / Stop & Start.
Does the setting stay off?
No — it resets to on every start, so press the button each drive if you want it off.
Why has my car stopped switching the engine off?
Usually a low or ageing 12 V battery, or the engine/cabin not yet at temperature.
Is it bad to leave it on?
No — the system and starter are designed for it; switching off is preference only.
If a warning light appeared with the change, decode it on autodtcs.com.
Disclaimer: The information on this page is provided for general guidance only. Always follow your official service manual and safety precautions when working on your vehicle. We are not responsible for errors, omissions, or any damage resulting from the use of this information.
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