Hi Carm, yes I’ve also looked at the ebay once, but if you look on YouTube they say stay away from the ebay offers as they need a “key” that only main dealers have, and they will charge you the same as if you would have taken the vehicle to them in the first place, this scares me as my 2013 A7 sline 3.0 diesel Quatro is in excellent condition, except for the older Satnav, I will probably go and do it with a main dealer I'm not guided by someone that knows of a good place for me to take it, I’m based around the Wirral / Liverpool area, but thank you for that post Carm, just not confident enough to chance the ebay route on my own ☹️👍🏼