The light on your Golf was the brake pad wear monitor, nothing to do with the ABS.
Your options are-
1/ get the fault code(s) read, put up the results in a new post and we can discuss options, or
2/ "save money" by not getting the diagnostic check done, just start fitting new parts at random. This will end up costing ten times more than option 1, but for some reason it's what a lot of people do.
stimpy, August 2009