95 W140 S320 Central Locking Systems problem
 

I have 95' W140 S320L.

When I using remote to unlock the door, my daugther hold the handle at the passenger door and the door keep locking. After check, the Aux fuel box is broken and when I replace the fuel (20A), all the doors and the trunk stop working and seems like the central locking systems is not function. Please help!!!!

Anything that I should do before sending car for repair???

Almon