Xcent Undervoltage Error

Whoa, that sounds eerily familiar! I had a similar freakout with my old 2014 Renault Megane a while back. Same symptoms more or less – flickering lights, slow starts, the whole shebang. For me, it turned out to be the battery, or rather, a parasitic draw draining the battery while the car was off. Have you checked for anything like that? Maybe something staying on when it shouldn't? It feels like a leaky bucket – electricity just seeping away.

A parasitic draw, huh? That’s a new one for me. How exactly did you figure that out? I've checked all the usual suspects – lights, radio, etc. – making sure nothing's obviously staying on. Is there a way to pinpoint where this 'electricity leak' might be coming from? Sounds like finding a needle in a haystack!

Yeah, tracing it down was a pain in the neck. I ended up taking it to a workshop, and they used some fancy ammeter to measure the current draw with everything switched off. They systematically disconnected circuits until they found the one causing the problem. Honestly, unless you're comfortable with electrical testing, I'd recommend taking it to a professional. Could save you a lot of time and frustration, like trying to catch smoke with your bare hands. In my case, it was a faulty module constantly pulling power.

Okay, thanks for sharing that info. It sounds like taking it to someone is the best solution. I followed your recommendation and took it to a professional. They replaced the battery and did a test on the charging system. Indeed the battery was heavily discharged and defective. The voltage drop was significant, so replacing the battery did the trick. Cost me 290€, but at least the Xcent is back to life!