Hi,ive just lowered my A3 on coilovers now the ABS light has come up on the dash.Sometimes when pulling away i get a juddering sound from the passenger side front.Could this be the ABS sensor?..i dont have VAG COM to check tho
I vagcom'd it to find out which sensor was at fault, then replaced it, and reset the light with vagcom
the noise you're hearing is your ASR kicking in mate, it's a very simple form of traction control that tries to apply the ABS when it feels the wheel slipping.
It sometimes triggers when pulling away from junctions and stuff over steep cambers, but it can also happen if you have a dodgy wheel speed sensor on one corner. usually the front. When mine started playing up, it was triggering all over the place at any speeds up to 30mph.
How have you replaced a sensor already if you didn't have VAGCOM to tell you which one was at fault?