1) do you mean when you press the switch on the passenger door or the switch on the drivers door? if its the former its designed like that.
2) not sure - what does the symbol look like?
3) your pipe has come loose somewhere - either in the boot panel itself or seomwhere along the headlining.
4) you can buy one but its then finding someone who will cut it for you; I've always had people say 'sorry mate gotta take it to the dealers' tho other peeps have said that most key cutting places will do it. i guess it depends who you know, where you live

stealership will charge you a small fortune to get your key cut and or re-programmed. you need to find someone who has VAG-COM (software thats used to diagnose faults etc) and ask them nicely to do it for you.
Hope that of some help mate
