My ABS

whats the deal with the abs on mk4 golf's

i stopped quickly at the end of my drive the other day (on gravel) and it locked, no pulsating through the brake pedal, no sound of any abs pumps buzzing or anything kicking in for that matter...

there's NO warning lights on at all, the abs light comes on with the ignition and goes off after a second or so, so it obviously thinks the system is ok

is it speed sensitive or summat? i.e only kicks in above speeds of like 30mph (my mate's dad had a v6 mondeo which did exactly the same, no abs under 30mph)

I'm not complaining about the brakes at all, compared to my old escort theyre phenomenal