p38 abs front sensors

How far in do they go?
Ones showing a slight scoring.
Is there a set distance between the tip and the trigger.
Also getting the abs fault light coming on so have changed one the other was changed last year.
Mot time so changed the 4 ball joints just need to sort out the abs issue
Cheers

The sensors push all the way in and are set by the rotor turning, the slight scoring is the sensor being pushed by the regulator ring so nothing to worry about
when does the abs light come on? as you press the peddle if so check the brake switch on the peddle there is a plunger that pulls out, details are in Rave
you will get more help with P38 problems if you post in the Range Rover section of the forum