book it in and have it checked out ?
i used to have a celica gt4, the turbo version, it had a similar thing, with the abs kicking in at low speeds.
it turned out to be a faulty wheel sensor, a failure i only noticed when somebody pulled out in front of me and i really needed abs !
the pedal went straight to the floor, the abs then kicked in, lifting the pedal again, for a fraction of a second, before dropping the pedal to the floor again !
i have no idea how i missed the other car, pure luck i suspect, but i basically had no brakes at all ?
it might cost you a couple of quid, but when it comes to brakes, are you willing to take the chance that it's nothing serious ?
you're never alone with schizophrenia.
1992 alfa 75 2.0 twinspark l.e. (one of the last) now sadly departed
1971 mercury cougar. 302c.i., lightly tuned
1995 volvo 850 t-5 240 bhp the new toy !