Recently the yellow light on my dash (brake pad indicator - I think) came on. Brake fluid resorvoir is full, took all 4 wheels off and pads are good. Replaced master cylinder about 10K ago. Brakes work OK, maybe a little stiff, but maybe I'm just imagining that. Any ideas?

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John Schroader
bio burnin' 83 300D, '83 300 SD, '79 240D
"I've never met a man who was good at making excuses who was good at anything else" Ben Franklin
"You cannot permanently help a man by doing for him what he could and should do for himself" Abraham Lincoln