Hi I have a problem in that the passenger door on a TT Coupe doesn't open with either the exterior or interior handle! There is resistance in both handles when pulled so I know the cable hasn't snapped, but I think its a problem with the deadlock being jammed.

I have tried disconnecting the battery for 1 hr to see if that resets the deadlock but to no avail. The driver's door is fine.

Has anyone had this problem before and can suggest a solution please before I start ripping away at the door card because it can only be removed by opening the door!!