I've machine-washed the car since new, over and under, without any problem. But obviously it's a good point and if the problem does prove to be down to that, my case should be stronger because I asked the dealer if there were any particular weaknesses in connection with machine washing on delivery.
Thanks for the comment though.
Cheers BB

OK heres a recurring problem!

Both myself and a relative have CRV - 57 plates!, both have had the problem start within the last 3 months too!. Been to Honda , they said no problem with either vehicle! Mine still in warrenty so want it sorting PDQ.

We both have sensor that bleeps continually as soon as you put it in reverse!, the sensor on the left centre (on both vehicles) has gone white, we were both advised to pay £50 to get a guy to sand down and re-paintthe sensor! What????

Would be really interested in what advise you were given.

Hi Kirkby
Well, I can't help you very much here I'm afraid as Honda agreed to replace the faulty component(s) under the expired (by three months) guarantee. So I was happy and didn't ask any questions.
A little surprised to see that this now seems to be a known weakness with the model though, almost a year has gone by with no reoccurrence so I hope it's a permanent fix, although I'm not so sure now.
I can't see how sanding and repainting the sensors will help either.
Coincidentally, the car's in for its service today so I'll ask if they ar seeing any more cases of sensor failure and post on here if so.
BB

I've owned my CRV for over 10 years and noticed when the paint started to peel off my parking sensors it caused the audible alarm to go off constantly. I stopped using them because of this so today whilst I was having my MOT and service at my local Honda dealer I asked them to quote for their replacement. The figure was over £130 each sensor! The garage admitted if you had a new set of sensors non Honda the set could be fitted for £299 and colour coded. I think this is a fault with them in as much as they do seem to degrade after a few years. The garage also suggested using a fine sand paper and then painting or varnishing over the sensors to keep the water out. We've decided we'll give it a go before we fork out any money.