Audi Repair: audi tt, wheel arch, drain pipe

Question
hi jan i have a wet floor on the passenger side floor took it to local garage took back wheel of an wheel arch trim to get get at drain pipe pulled about 4 inches of pipe out which was rotten can you tell me the way to replace drain pipe many thanks ian

Answer
Hi,  I have not done this before, I would presume this is a drain pipe from the sunroof?  My guess would be that the easiest way is to attach new pipe to the old, and pull the new one through by pulling the old one out.  But as I said, have never done this.  Maybe go on one of the audi forums to see if there is any information on that.  Sorry I can't be of more help.   Jan