Fantastic info folks thanks :icon_thumright: tried to reset them but in vagcom the on/off does not work and i use the full registered ross tech cable etc,but on the audi forum he uses the older 311 version? its not a permanent fault,the light comes on every now and again,logs no codes unless you plug it in to vagcom before switching the ignition off.
Still i have a old cable at work so will give it a go,thanks again folks!