Seeking Advice on Possible Self-discharge Issue with 2021 Renault Arkana Hybrid

Hey there! A while back I also had trouble with my 2018 Renault Captur, similar symptoms and all. Turns out, the culprit was a defective control unit that was causing all the ruckus. I took it to my local garage and they handled the issue rather professionally. They explained to me that the control unit was basically the brain of my car and if it goes haywire, so does everything else. Make sure to let whoever handles this for you know about the weak battery during start-up and also the dim/flickering lights - those are important symptoms that led to my diagnosis. You're right, it could be self-discharge too but, in my case, checking the control unit got it sorted. Don't worry too much, it's a fairly common issue and can be straightened out without too many complications. However, it's not something you should leave unaddressed; it needs fixing ASAP. Hope this helps and your Arkana goes back to being as smooth a ride as it should be!

Hey, thanks for the advice! That information about the control unit is really helpful. I've got an inkling now what I gotta discuss with the mechanic. Out of curiosity, do you remember approximately how much buck you had to drop to get it fixed? Also, since you got it sorted, has anything else flared up or it's been smooth sailing? Appreciate your help!

Hey! I'm glad you found the info about the control unit helpful! As for the damage to my wallet, it stung a little - the bill came up to around 600€. But considering the car's performance afterwards, I reckon it was money well spent. As for your second question, since the mechanic sorted the issue, it's been pretty chill, no more dramas! Actually, the battery issue got a ton better after the fix. It had really been struggling before due to the self-discharge problem. But haven't had to deal with weak start-ups or those pesky dim lights since. So if you're facing similar problems with your Arkana, getting that control unit looked at should help out a lot. Keep us posted on how it goes, and fingers crossed it doesn't put too much of a dent in your wallet!

Wow, I really appreciate your detailed reply! Knowing that it cost around 600 euro does sting, but if it fixes the issue, then it's definitely worth it. It's a relief to hear that everything ran smoothly after getting the control unit fixed, and the battery improved too. That's terrific news, and a promising outcome! I'll be sure to consider this when talking with my mechanic and will push for them to check the control unit right off the bat. I'll aim to keep the cost as low as I can and hope for the best. I'll keep you in the loop and let you know how things fare. Cheers for your help, really put my mind at ease! Fingers crossed everything goes well!