Has happened during regular D mode and when at a complete stop. Like I'll be at a light completely stopped and all of a sudden a loud screaching noise goes off and goes away. Very odd for sure...can you be referring to the noise when you are in "brake" mode?
I noticed that there is a slight grinding noise when stepping on the brake when in 'B' mode but i think you originally posted that the noise comes after you stopped.
Yeah mine definitely was not doing that noise 2 months ago... been driving the car for the past 2 days and have not heard the noise again though. I hate these inconsistent problems... if you can't replicate it then the dealer is usually unable to fix itI have it too or something similar. Mine is a high pitched electronic sound when I touch the breaks - in drive or park. I am sure it wasn't there the first couple of weeks I owned the car and told this to the dealer last week when I went in for my 45 day checkup. The tech said it is the regen brakes. I said that I am not moving and it isn't the whiring noise that the regen makes when braking. He just didn't want to hear me so I didn't bother. It might be the starting process of the regen braking but again I was sure it wasn't there in the first couple of weeks, I am used to it now.