how to remove rear parking sensor on a cls 55 amg

[mb 55 amg]

hello everyone i have tried removing the parking sensor with no luck

can some please guide me on how to remove it without breaking something, if possible without removing the whole bumper because i can see the sensor if i go under the rear bumper

heres a picture of a similar sensor ,i am not sure how this clips on to the bumper or is it glued on....

any advice will be highly appriecated

 

[BlackC55]

They just unclip and push out. If access is tight then removing the bumper is only a few screws.