Hi Samib, I had a simular situation with my old 2010 XF, appart from the water ingress, just an idea, in the boot you have what is called the control module, all this is pretty much a big fues box with relays as well, my issue was pointing to this ( had jag diagnostics lead ect) so instead of messing arround with swapping relays and such like, i bought the whole lot off ebay, they range from £60 upwards complete, however I do have one spare as i sold the car before i fitted mine, if you can, can you take photos of your one so i can see if its the same, if it is, we could come to an arrangment regarding posting ect if you like? and you can try it, see how you get on....