Clio weak battery and flickering lights

That sounds familiar. I had similar issues with my old Vauxhall Astra. Weak starts and dodgy lights. I'm no expert, but have you checked the battery voltage? Is it holding a good charge?

I haven't checked the voltage myself. I don't have a multimeter. What voltage should I be looking for normally? And would a faulty battery sensor cause those kinds of symptoms?

Without a multimeter it's tricky. A dodgy battery sensor can definitely mess things up – it might not be reading the battery's health correctly, causing the car to undercharge it. My Astra was eventually diagnosed with a faulty sensor. Best bet is probably to get it checked out at a workshop. It could be something simple, but better safe than sorry!

I appreciate the insight. I'll take it to a workshop this week and have them check the sensor. Hopefully, it's just that! Got a quote for 315€, let's hope that's all!