What’s that?

I recently bought an audi 80 b4 bj.92, in the glove compartment I found this here: [link]http://g22.img-up.net/2508200953JFuAV.jpg[/link] [link]http://a85.img-up.net/2508200953qXZxjmjD.jpg[/link] [link]http://l12.img-up.net/2508200953hzuG9iu.jpg[/link] [link]http://t39.img-up.net/2508200953n2rvy4.jpg[/link] because some electrical things (e.g. electric sliding roof) don’t work, I thought that this was going to come in somewhere…. and what else can I find out if I have a zv? So if I have one then it doesn’t work, but I guess I have one, because I don’t know how to close the tank lid, because there’s no conclusive, and somehow it has to go, so I think I’d have to have one…