Ive recently purchased an A3 2.0tdi S-line, it came with an RNS-E fitted from an S3 (says audi s3 on screen when turned on) anyway firstly im looking to install an AUX IN line so I can play music from my iPod. Secondly the RNS-E makes some weird noises sort of like hissing and vibrating, sometimes it only quiet, sometimes quite loud. Ive read to check the connection on the back but I dont have any release keys, and others have said to make sure the headunit is coded correctly and the wiring has been changed to suit the bose speakers, also the drivers side front speaker has just gone off too. Im wondering if there is anyone located near Hartlepool (North East) who could possibly have a look for me? Im also willing to travel to you depending on distance.