Various problems with Ford Fiesta 2007

Greetings.

How truth is I get tired of looking for him and then I can't find him, I have a Ford Fiesta 2007 sedan and I have 3 problems with the first one happened after an incident in which they hit the rear left part. Well the situation is that after that the alarm does not work according to the insurance workshop, however, from one day to another it no longer worked, the central focus on the board serves, however the alarm no longer, has no electrical insurance or anything and already changed the battery, it was already scanned and nothing came out.

While the alarm fails, it does not sound is activated alone? What are you doing? Or does not do

Does nothing, it is not activated with control or anything

Maybe this distrust you should send it to configure again, and you should check the fuses that are under the cover under the torpedo maybe some melted.