Problems with electrical failure and weak battery in Citroen C3, model year 2019 - Possible interruption of terminal 30?

Hey, I had a similar situation with my 2017 Citroen C4, I'd say I have a certain amount of experience when it comes to cars. When I visited my garage, similar symptoms presented themselves. My car had a faulty battery sensor. The repair cost 315 euros. This could also be the problem with your car. Perhaps you should ask a mechanic to check the battery sensor. Can you give me some more information about your car so that I can help you better? Engine size, mileage, have you made any changes recently? This could be crucial to get a better insight.

(Translated from German)

Hey, thanks for your quick reply and the info! I have a diesel engine and the last readout was at 30417 KM km. Not sure if I missed it, but the error occurred without me changing anything on the car before. I will follow your advice and have the battery sensor checked. Thanks again for your helpful tip!

(Translated from German)

Hey, no problem, that's what we're here for, to help each other! With your mileage, I wouldn't necessarily expect a battery defect, but you still deserve to check the battery sensor. In the case of my Citroen C4, it has been shown that the charging voltage of the alternator can also play a role. It may not be supplying enough current, which can lead to the problems you describe. You could have the charging voltage checked to see if it is within the correct range. Another possible fault could be an interruption or short circuit in terminal 30, as you have already mentioned. So it might make sense to have this checked as well. In any case, I wish you every success and hope you can fix the problem quickly!

(Translated from German)

Hey, this is a great user community here, thanks for the valuable tips! I never would have thought to check the alternator. Both the battery sensor and checking the alternator and terminal 30 are definitely items I will add to my checklist. I will definitely report back to you once I have an accurate diagnosis and result. Thanks again for your time and help!

(Translated from German)

Hello to everybody. I would like to ask. I own a C3, year 2019, petrol and i have a problem. My car starts by pressing a button and sometimes (usually in high temperatures), when i pressure the button it takes a few seconds (4 to 5) to start the engine. I took the car to a mechanic but there were no failures or syptoms to the dygnostic check. I recently changed the battery and the starter seems to be ok. I also changed the batteries to my both keys but the problem continues. Our mechanic also ruled out a possible fuel pump failure. Any ideas?

It sounds like you've already ruled out a lot of potential issues. One thing you might want to consider is the ignition switch. If it's faulty, it could cause a delay in starting the engine. I'd recommend having a mechanic check the ignition switch for any signs of wear or damage.

Thank you for the quick response. If you are right and our problem is the ignition switch, why we couldnt see it to the dygnostic check? There could be a check lamp for it, isnt it?

I think if there is a mechanical fault in the ignition lock, it cannot be detected by reading it out.

(Translated from German)

Good morning yesterday I get a notification of battery failure car stop and suddenly I got all the failure do you guys know maybe what the problem could be?

(Translated from Dutch)

It sounds like your battery might be failing or there could be an issue with your alternator not properly charging the battery. I would recommend starting with a simple battery test. Most auto parts stores will do this for free. If the battery is fine, then you should have your alternator checked. Please keep us updated on your progress.