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Today the car wouldn't start again so to be 100 percent sure I tapped the connector and it worked again... in response to whether I replaced the batteries - yes I did not replace them with Ford ones but with replacements with the same parameters (both 12v batteries) but it wasn't the 12v...

Hello everyone. I probably found the cause. It may sound funny but I have a lot of electrical experience and I decided to check something using the proverbial "hammer :)" I didn't unscrew anything I didn't unscrew anything I lay down under the car and hit the connection visible in the picture...

It would be nice of you to dig up those records and send them to me. Let's hold off on the VIN number for now. My dealer is a different story. I'll tell you about it at the next opportunity... Of course, if you can find it... I understand that it's holiday season now and it will be hard for...

and can you specify which harness they replaced? This one?

Thank you for your response my friend I was following your post and I was hoping that this problem did not concern me... especially when after replacing the 12v batteries the car started after a few attempts but unfortunately it happened again and the batteries are new and fully charged.... Can...

Hi. Thanks for all your replies. Do you guys have any more ideas? Does anyone have any suggestions on what I could check and do myself?

I found something else interesting in the PIDs - low voltage power supply failure and selected modules shutdown status - cluster proveout

Recently I saw another error but I'm not sure if it's related. Lost connection with pcm/ecm

That's right, the becm reports that something is wrong. On the other hand, about a month ago I had the same problem for the first time when the 12v batteries were very low, then after a few days and the knowledge I acquired here I replaced the battery from my BMW X5 and powered the auxiliary...

Thank you for your reply. Both batteries were disconnected from the car for 3 days after that and after reconnecting them nothing changed. Best regards

Sorry, I thought I translated it. Thank you for your interest.

Cześć, chciałem się z wami podzielić informacją, że samochód ciężarowy znów się zepsuł... wszystkie akumulatory 12 V są nowe i w pełni naładowane... Myślałem, że w poprzednim poście to jest przyczyną problemu, ponieważ samochód w końcu odpalił... ale nie, i znów się rozczarowałem... Znalazłem...

Hello friends?? The problem is back... the battery is new, both fully charged... the car is behaving like it was before... I have no idea if it was a coincidence that I managed to start it... now I've tried many times and nothing... I can't even reset the bms through forscan, some error pops...

Hello everyone. So the batteries have been fully charged... Today new ones will be purchased ;) I also connected another battery to the auxiliary battery using cables... after a few attempts to erase errors, reset BMS and play around I managed to start the car... who would have thought that such...

looks original ... I suspect that this battery is from new, I will check it urgently. It's late for me so today I will manage to change the almost new battery from BMW X5 ... I will power the one under the seat from another car, maybe that will give some insight ... Nevertheless, you are right...

Does anyone have any experience with the codes that are in one of the photos? and would like to share what happened?