12 volt battery bricks our fortwo

Check the cells. You can look it up with the xentry tool.

If I have 110v, 110v and 108v on each module I still measure each cell? Or is enough to resetbms and the sensor replaced?

Only 1 cell is 0.7v in rest all of them are above 3.5v

So that's your first problem. You now need to recharge this cell individually.

Quote from rultdy

Or is enough to resetbms and the sensor replaced?

It still needs to be done. But first thing to do is now try to bring the cell back to life. If you fail that, you don't need to buy a reset or a current sensor, as you can't get a new cell.

If i will remove the connection of the broken cell and put one 3.6v 50 ah with wires connected on same connections like old old one you think it will work? Or the bms will read different resistance and wouldn’t recognize the new one.

I would first try to recharge the cell individually, could be it can be recharged and will then work again as it should. Try it, bevor you announce it as dead.

I will try that, anyway be prepared to help me with the BMS and the sensor

Successful charged the bad cell, now is at 3.59v I will wait few hours to see if it stays there.

Please tell me how to proceed to my next step?

Next step is to order a BMS reset now trough the shop:

Product

E18-1 BMS reset (P18051C / bricked BMS)

E18-1 BMS reset (P18051C / bricked BMS)

starting at EUR 499.95

You'll then receive a email where to ship the BMS to, how you can make the shipping process quicker and then you just need to wait for it to return.

Don’t forget that I need also the sensor

In this case you need to order that as well.

eqpassion.de/shop/product/35/

I’m facing with the problem of that cell, is going under 3.2v in one night.

Probably I must change that cell.

There is any way to program bms to forget that cell?

Sadly there is not. To which voltage did you charge the cell?

I’ve had 4.2v, after 12 hours it goes to 3.15v after another 12 hours is 1.65v

all other cells are staying at 3.56v from 3 weeks

You could be lucky and the cell starts to work again after recharging it a few times. But that's just a desperate attempt.

Charged already 3 times

I must find a module, i can’t change the cell🤦🏻‍♂️

I found a module pack battery gen 4, is any possibility to fit this pack in my battery, my car is 2013 model?

No, there is no way.