I saw water on the inside plastic trims, The one's behind the door seal rubbers .. I thought that is strange, I then looked up behind the door card with the plastic speaker grills, Hmm looks like it's coming from behind there..
So promptly removed the door card & low & behold, It was coming from behind the door speaker, Whipped that out & the evidence was plain to see , The back of the speaker was wet & the foam type seal on the outer edge was was soaked..
So dried it out & made a shower cap out of polythene for the rear of the speakers & resealed the speaker to the door with some silicone .. Hopefully that has cured it ...
I repeated the procedure on the drivers front door , although that one was dry around the seal ....
Anyone else had this issue ..??