Technical Central Locking System Ducato 2.8 2003

[Fleaspirit]

Hello
How are you all ?
When I lock the van via remote key the front doors lock fine .
The side door will lock sometimes ( I make sure the door is closed completely every time ) most of the time it doesn't work with no sound of an attempt from the mechanism .
The back doors don't even try , but I'm not sure if they are included in the system ( They are original , the whole van is ).

If the door locks sometimes , this must mean there is a connection problem somewhere or does the mech wear out ?

 

[ecunotemu]

Theres a POS contact in the sliding door, bottom right looking from the outside.

Back door is probably cracked wires where the flex in the pillar or bellows.