ok, so my dealer (Cambridge Honda - John Banks) came back with a quick response, and as they say sharing is caring......
"To put your mind at ease, it’s not the radar that is faulty so you won’t anchoring up for no reason! The radar is in the lower left corner of the front bumper, it’s the parking sensors that are causing this issue. The front parking sensor issue affects all Civic models from launch to current when it rains or is washed and is currently under review with a modified part being developed.
We were replacing the grill with a modified one as mentioned. This was due to sensors being at the uppermost of a set tolerance, but this didn’t cure it. We replaced sensors, again this doesn’t cure it. We had a visit from Honda Japan to see a Civic we had here that had all the “modifications” done but was still faulting, they took the parts back to Japan with them, Japan are obviously developing this new part. The part is due very soon so hopefully we will see them before your 1st service is due. We're not sure it will be a part of a recall as it’s not safety related, but it will be fixed on a customer complaint/service time product update type of fix."
So no fix today, but as soon as one is available, I'll be asking to get mine done. The only bother is putting up with the beeeeeeeep in the meantime. that said, I can't fault Honda Cambridge for their openness to explain what's really going on and they are working on a resolution for the greater good. :smt023