I took a video on my pump noise.
Video here:
I took the car into the dealer yesterday and I played the videofor him. He was surprised how loud it was as well.
Is this what other people are hearing as well.
Note that the video is taken by my phone below the rear bumper directly below where the spare tire would go if the 335d had one instead of a urea tank. Note that the phone was located on the garage floor directly below the pump- so the noise sounds louder than if you were standing at the rear of the car.
-Ed