Seeking Advice on Weak Battery and Flickering Lights Issue in 2018 Fiat Doblo Diesel

Hey there! Sounds like a familiar issue - I had a similar problem with my 2016 Fiat Scudo Diesel a while back. I'd categorize myself as having some car experience, though I'm no expert. In my case, I initially thought it was the battery too, but it turned out to be a defective control unit. I took it to my local workshop and my mechanic was super professional and diagnosed it pretty quickly. Ended up costing me around 600 Euro to replace the unit and a bit of labor. Worth every penny though for the peace of mind. You might want to check if it's something similar with your Doblo. Do you have any issues with the electrical systems other than the lights dimming? How frequently do you use your vehicle? Any additional info could help me give you a more accurate suggestion. Take care and good luck!

Hey, appreciate you sharing the info about your experience! It's definitely something I'll keep in mind. As for your questions, I haven't noticed any other electrical problems, although I've been trying to cut down on driving lately due to this issue. I clock my Doblo Diesel at 132148 km, with the last service done a few months ago. It's mostly been used for daily commuting, but I've taken it on longer trips a couple of times. If it's the control unit like you had, I'll probably bite the bullet and get it sorted out with my mechanic. Fingers crossed it doesn't put a big dent in my wallet though. Cheers!

Hey there, always glad to help a fellow Fiat owner. Let's hope it's not the control unit and something less daunting. If your Doblo was mainly used for daily short trips, it could mean that your battery doesn't get a full charge. Combine that with recent cutbacks on driving, it could explain the weak start and flickering lights due to a discharged battery. You could try to recharge your battery using a car battery charger. If you don't have one, it might be a good investment - it's always handy to have it in your garage. Give it a full charge cycle, and if the symptoms persist, then you might need a new battery or there might be an alternator issue. In any case, I'd definitely recommend getting it checked out by your mechanic. Remember, these are just guesses based off my own experience. Your mechanic will be able to diagnose the real root cause. Good luck hope the issue gets sorted without costing too much. Any other troubles, just holler! Cheers!

Thanks a ton for the advice! I don't have a car battery charger on hand, but I'll look into getting one. Starting small would really help my budget if it turns out to be a simple issue with the battery not getting a full charge. Honestly can't thank you enough for walking me through what could be the possible reasons, it's really comforting to know what I might be up against before seeing my mechanic. I'll try out your suggestions and see how things turn out. If I've got any more questions or updates, I'll be sure to reach out. Cheers! You've been a great help!