Rear doors will not open!
 

Can anyone help?
A few months ago my nearside rear door ceased to open with the central locking operation and has remained firmly shut ever since. Over the last few weeks my offside rear door began to operate intermitently and has now gone the same way and cannot be opened from either the inside or the outside.
Has anybody else had this problem and is it to do with the doors themselves or is it a central locking management problem ie the chip?
Many thanks. :eek: