Operating fault

I have a 2015 model 308 T9 car whose battery I changed about 1 month ago. I can't start my car on the first try for a week. When I run it, it gives "Fog Light failure". Thinking that the remote's battery is getting weak, I changed the battery. However, it behaved the same way, ie it unlocks the doors but does not open the side mirrors and when I try to start it does not work, but after a few tries it does. When I contacted the service, they told me "The engine software needs to be reinstalled". I do not understand which software will be reinstalled and why.

Hello teacher. Does the vehicle have a start stop?

Yes there is.

Is the battery start stop not plugged in? The problem is probably due to the battery being introduced and the necessary adaptations not made. charge value etc. needs to be checked

My teacher, the battery was changed by the authorized service, he probably did what he mentioned in the "start stop stuck" statement. On the other hand, the start stop function works normally.