This is the BMS (battery module) used on Mercedes C Class W205.
The battery is out of power.
So we need to repair the file using the xhorse vvdi prog programmer.
Put some soldering paste on it.
Use this hot air station to heat it until it reaches a certain temperature.
Then take it off with tweezers.
Be careful not to overhear when heating
Otherwise, the chip will be damaged.
There is a point on the chip shows PIN number 1.
According to the position we will know which direction to solder it on the adapter.
and match it to the small hole on the chip which shows PIN 1.
Then solder all, put some soldering paste.
Then connect the adapter with vvdi prog to read and write.
Run vvdi prog software
Select ST M95M01 chip
Read chip
Save chip
Then select the file to repair the BMS
Write chip
Write data successfully.
Reinstall chip back into battery module.