ok not a big deal here is what you do.
Remove front rotors (mark rotors so they go back on hub same way)
remove sensors from wheel bearings( Older models require removing 2 wheel bearing bolts)
Take a file and file down where the sensor mounts to the bearing asy.(what happens is rust lifts the sensor up a slight bit and caues a open speed at 5 mph or less makes abs come on)
Clean sensor and lube reinstall road test Don't be shy about using the file eather.
Only replace the sensors if they break while removing from hubs (1 in a hundred break) Good luck