Agreed. Scanning tells all, but from my experience, the brake light switch will set off as many as three codes.

The switch was replaced on my W163 and W208 for the same issues. Both vehicles set off a BAS-type warning in different manners.

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car