If its a wet sensor, that would suggest that they arent sealed???
or is it as they get older they get less waterproof?

When i went to the gym last night, everything was as normal all working, big sigh of relief.....

When i went out earlier today, warning tone and flashing light again
deffinatley need to sort this when i get time

Checked this morning before i went to work,

front middle right not clicking
AND
rear middle left not clicking.

When I bought the car just over a year ago it had the front middle left one replaced, under warranty....which expired on 01 Jan

So, they are £85 each??

Thats exactly what mine is doing with the exception that its the front noise.
Havnt checked which one is the offending sensor yet, so does the flashing light mean anything different? others havnt mentioned it??

I now have a front parking sensor fault. Constant tone for 4 seconds on ignition on, with flashing green light at the button. Does this mean anything specific?