Both radiator fans are not activating on stage one, per the VAG.com there is an earth fault on stage one. Although i think the fans would will still run on higher speed if the engine needed it, the aircon is being turned off (the econ button lights up as soon as the car is running at low speed, when there is insuffcient natural air movement from driving). In Nov 2006 i had to have a new fan pack due to the dreaded ECU failure and the constantly running fans (which many people seem to have suffered). Any suggestions? (the car is a 2004 2.0 tdi) thanks.