I haven't got the parking sensor controller in the right rear but have the left hand side one which is the Suspension controller I do have (Its not the Airbags Controller, that's forward of the gear shift). It is mounted very solidly in a surrounding frame and can hardly move, so can't rattle. I seem to remember that Scirocco is a MY2010 model in the videos was produced 4 months after mine. Mine is MY2010 also. So why the left unit is mounted differently without the solid frame
You can get at left side by taking off the access panel to the rear left light's release in the boot lining wall as in the photo. The suspension controller is on the forward edge of the hole.
Right side will be more difficult and will need the boot wall lining off to look at it. The video is representative of production installation so if the rattle noise is bias to the right, its worth a shout.
Final traced my left hand side noise in the boot the the boot liner "flapping" on the boot wall. Little velcro pad solved that.
You do not have the required permissions to view the files attached to this post.