[s-cars] ABS not

[Bill Mahoney]

Folks

Since things had been going along so well, last Friday my brake and ABS
lights have come on and remain so.

I have to reconfigure my vag com to a new computer, but will pull codes
asap.

Searches have yielded that it could be 

a.	dirty sensor at one of the wheels
b.	broken/shorted wire
c.	relay failure

 

Anything else?  

What's to check first?

Where's this abs relay located?

Any BTDT?

TIA!

Bill M