The "brake" light came on and "check brake lining" is also on display. I'm thinking brake sensor wear pad gone bad. Anyone thinks otherwise and how to figure out which one could be faulty?

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"better the devil you know than the devil you don't"
2003-03-04 E53 X5 4.4i M62 [SOLD]
2006-03-16 E53 X5 4.8iS N62s
2006-03-28 E90 325i N52 [TOTALED]
2012-09-06 F30 328i N20 (CEO's)