Distance sensor fault

[Bjk67]

I have a sensor fault on the rear. Local garage says the system shows three sensors faulty. How difficult is it to change them? I presume the bumper has to come off is that a big job?
Thanks for any help.

 

[Crasher]

They have to be painted and it is a big bumper that needs two people so as to a valid paint damage.

 

[Bjk67]

If I do it myself (with help!) do the sensors need set up or are they plug and play?

 

[Crasher]

Yes just plug in but even when working, legacy codes will remain on the system but not cause any problems.

 

[Bjk67]

Thanks for your help.