It could be the radio signal if you take the radio out and make sure the areial is in properly, if that doesn't wok might be the actual radio settings mine used to do it for traffic updates annoying as hell so I had a look at the radio manual and changed the setting and it works fine now, hope...

We'll mine went on me today :( lucky I was near garage who had them in stock cost me 25 pound and fitted it in about 30 mins on a car park with help of a friend but, I find it stupid how garages have charged 200 for some people for a easy fix all you need is 24 mm spanner and a Stanley knife or...