Service light Reset

[A13X-A3]

Havent long had my A3, decided that im going to service it myself. But after its done, the service light is still going to flash when i start the car, ive tried a procedure that i had off ebay to reset it, but it only gets so far (wont actually reset). After playing round with the combination of buttons i managed to get the display to flash up four 0's, and you can change them, 0-9. But i wasnt sure what this was and how to save it.
I hope somebody on here knows how to reset it, or have i GOT to buy the kit that plugs in.
Cheers
Alex:icon_thumright:

 

[rodenal]

Have you read your manual? it tells you how to reset the light in there (unless its longlife servicing, in which case i dont know, but vag com will be able to reset it for you)