Aygo start stop malfunction

I had a similar issue with my Aygo. The start-stop system relies heavily on a healthy battery. When the charge drops too low, the system disables itself. Have you load tested the battery? That's the best way to see if it's the problem.

Thanks. I haven't load tested it yet. When you say 'similar issue', did you have the same symptoms—engine shutting off but not restarting, error code, and warning light?

Yes, those were the exact symptoms. The engine would cut out fine, but wouldn't restart, and the same warning lights came on. Given that your battery might be old, it's probably the source. I'd recommend getting it tested at a workshop.

Appreciate the confirmation. I took it to the workshop. The battery was indeed heavily discharged. I replaced it. Total repair cost 290€. Thanks for pointing me in the right direction!