Twice gone into local Texaco garage to fill up, and twice became an involuntary captive. Turned off ignition,went to pull key out,all dead as a dodo. After hanging around for approx 1 hour (first time) it started as normal. thinking obviously I did something untoward was very careful on the second visit,but no,same again,waited 30 mins this time, then started like a good boy. Do you think it could be due to the high tec broadband equipment inside the garage,or am I know just a daft old bugger who cant read a manual properly. It appears that no other cars have ever had this problem there. Off to Audi in a mo,will report back on their findings.......if any.