My '84 500SL Euro's ABS light comes back on after the startup-underway tests.

I checked the right front sensor and it was severely damaged by battery acid which occurred during a previous ownership. I bought a new BOSCH sensor w/MB logo on it which appears to be fine. But it has a fitted mounting bracket unlike my original.

My questions are:

1-if the sensor protrudes into the cylindrically-shaped wheel aperture less than the original by about 1/5", due to the aforesaid bracket,... does that nullify it's functionality as it must actually contact the wheel, or what ?

2-does the sensor 'sense' the wheel's motion by magnetic induction and thereby generate a current transmitted to one of the 'computers', and results in an 'ABS moment', or what ?

3-if this new sensor does work, and I assume it does since the vehicle ABS initialization at startup and getting underway at about 5mph routines both occur, then....... among what possible causes do I still get an on ABS light after the startup routines ?

Thanks to all for your shared experience and knowledge,

Courtney

__________________
In Atlanta, ccthomas01@yahoo.com

'84 500SL Euro
WDB 107 046 ~
117 962 ~

'82 380SL US
WDB 107 045 ~
116 961 ~

'83 240D
'90 Audi Turbo 200
'91 Jetta GL Ecodiesel