My 2017 Rav4 Hybrid makes a noise SOMETIMES when I brake, sometimes it does not. Along with the noise I feel a slight jump or movement from the brake pedal. I do not even have to come to a stop, if I am sitting at a light with my foot on the pedal it will happen. I would not be as worried if this happened all of the time, but it only happens sometimes. I have taken it back to the dealer and each time was told it was fine, they cannot find anything wrong. I took a drive with the mechanic who also heard/felt it, but after looking at the car they found nothing. Is this noise and movement in the pedal normal?