andrew this one sounds right
7. You turn the key to start and you get the lights, the engine turns over and FIRES! then it dies after running for about two seconds.
The Basics.
The car has an antitheft device that will allow the car to start, but will shut it right back down if it doesn’t like what it sees.
Troubleshooting.
This will probably be accompanied by the immobilizer icon. This icon is an outline of the car with a key superimposed on the bottom.
***A picture would be nice***
The first thing you want to do is to try a different key if you have one and see if that works. And did you change the battery in your remote? I’m not sure how long these batteries last, hopefully others will chime in with an average lifespan.
Another quick thing to try is to remove the battery cables and touch them together for a slow count of 5.
Here is a link to the Ross-Tech (The people that make VAG-COM makers) site on immobilizers.
I will post a few links or stuff I found quickly just searching here for "immobilizer".
http://forums.tdiclub.com/showthread.php?t=197799
http://forums.tdiclub.com/showthread.php?t=130174
http://forums.tdiclub.com/showpost.p...18&postcount=1
http://forums.tdiclub.com/showthread.php?t=105291
http://forums.tdiclub.com/showthread.php?t=244813
Another possibliity is that the Antishudder valve is stuck closed. This can allow enough air in the engine to allow it to run for a second or two, then die. See this link for more information.