C-Max parking sensor replacement

[aberdeeneuan]

Hi all,

My wife has a c-max on an 07 plate with parking sensors. One of them isn't working, how easy is it to replace it? Is it as simple as popping the existing one out and slotting the new one in or (as seems to be the case these days) some error code needs to be cancelled by someone with the computer thingy?

Dealer wants 80 quid for it, hence if it's easy I'll just get the parts and do it myself.