Hello Folks,
Annoying: Li'l brake light randomly comes on in the dash of the Toyota. Has nothing to do with whether brakes are used or not, purely random. I've traced it down to the master brake cylinder sensor switch. No leaks, reservoir is at the usual full level. Looks like it can't easily (or maybe not at all) be swapped on its own and changing the whole brake cylinder is messy and not really necessary. How do these things work? What could make it close the contacts once in a while? Wanted to avoid emptying out the reservoir before I know ;-)