The epc warning light is illuminated

Thanks for your thoughts - may have to bite the bullet and pay for the reset!!

HOPEFULLY , that's all it takes!

Hi All - well here's a solution that I found all by myself based upon some superficial knowledge of Bosch engine management systems on other makes of car: as I said in the first place I was fairly sure that I had upset the ecu by leaving the tt unused for over 2 months and that the fault was a false reading (any proper fault would have resulted in the epc light coming back on immediately after a re-set): the standard Bosch re-set requires that the battery is disconnected for at least 30 minutes, reconnected and the ignition key turned to the on position and left for 1 minute so that the ecu can re-configure: when the car was re-started there was no longer any epc warning alight - worth a try before you incur cost and spend considerable time and trouble on the VAG diagnostic system at your Audi garage!!