A month ago I got a warning while braking semi-hard, Service Stability Sys and Service Brake Assist. Nothing could be felt, only the warning lamps glowing at me. Happened again a few trips later. Gradually became more frequent and needed less hard braking to come on. Lately it'll turn on after a few seconds after start whether I'm braking or not.
Annoying but I could drive on. Well tonight something new happened, when braking normally the pedal pulsates a little and with high frequency just before I stop. So if braking from 50 mph to 0 mph in a normal fashion, at 5 mph the ABS (which I assume it is) starts without being needed.
Anything I can do before driving to the money hungry dealer? Testing, changing most likely components? Can I drive it?!
Any suggestion is welcome.