Thanks!

I just reconnected battery after 12 hours disconnected - no change.

The original warning went out - but, the Brake Assist and ABS warning lights stayed on ... could just be really weird coincidence, but ..... not likely.

I have searched a lot about Brake Assist warning and appears there could be connection to the brake switch (top of the pedal) - but, again, this requires an incredible coincidence.

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George Stephenson
1991 350 SDL (200K and she ain't bent, yet)
former 2002 E320 4Matic Wagon - good car
former 1985 300 CD - great car
former 1981 300 TD - good car
former 1972 280 SEL - not so good car
a couple of those diesel Rabbits ...40-45 mpg