Renault Zoe auxiliary battery issue

That sounds familiar. I had a similar issue with my older BMW 3 series. It's not an EV, but the symptoms sound the same: low voltage warnings and weird electrical glitches. Did you check the voltage of the aux battery? A significant voltage drop might confirm your suspicion.

Thanks for the quick reply! I haven't checked the exact voltage drop yet, but I'll do that tomorrow. What was the culprit in your BMW? Same auxiliary battery issue, or something else?

It turned out to be a failing auxiliary battery. It was causing all sorts of weirdness with the car's power management system. Since you're seeing similar symptoms, especially with the error codes, I'd get it checked by a workshop. Better safe than sorry with electrical stuff!

Appreciate the insight! I checked the voltage and it was indeed quite low. Took it to a local mechanic, and as you suspected, the auxiliary battery was the culprit and was replaced. Total cost was around 290€ Thanks again for pointing me in the right direction!