Saxo Intermittent Ignition Positive Interruption

I had a similar problem with my Saxo. It drove me nuts! Check the battery terminal connections first – make sure they're clean and tight. After that, look at the starter solenoid wiring. It's a common spot for corrosion. Is the fuse box dry? That could cause shorts, which could lead to that error.

Could you tell me where those connections are, or what signs of corrosion I should look for? I don't want to replace parts I don't need to.

The battery connections are easy to find. The starter solenoid is down on the starter motor itself, a little awkward to get to. The wiring harness runs along the chassis rail, that's where I found one corroded connection. If you're still struggling, get it to a workshop before you cause more damage. It could be an intermittent fault.

Following your advice, I took it to my workshop. There was a corroded wiring connection as you said! Repairing it, including diagnosis, cost 95€. The car is running smoothly again. Thanks for your help!