DS3 Parking Aid Fault

I had something similar on my DS3. Not sure what year mine is, but it sounds familiar. Have you checked the connections to the parking sensors themselves? Sometimes a bit of corrosion can cause havoc.

Good shout. Where exactly should I be looking? Are there any specific sensors that are more prone to this than others? I'd rather not pull the whole bumper off if I can avoid it.

On mine, it was one of the corner sensors on the rear bumper. I'd suggest starting there. Honestly, though, diagnosing it precisely without proper tools is a pain. If you're not comfortable with electrical testing, it might be worth just getting it checked professionally. I had a similar issue that ended up costing about 95€ for the repair.

Thanks for the advice. I'll check those rear corner sensors first, but I suspect you're right, a workshop visit is probably on the cards. Cheers!