The reversing sensors on my GV have always worked fine and I do tend to rely on them when reversing, usually watching the LED indicators through the rear view mirror and listening for the audible tone to go constant. A few days ago I gave my GV a good wash and rinsed it down with my high pressure jet wash. I think the water must have affected the sensors because when I reversed off my drive this happened.

 

I think your needing Glasses Alan...

 

Or stronger lenses Goggsy

 

All teh crap they put on car now a days like that are making us lazy. Tire pressure sensors, back up crammers,sensors, EPS traction control.
MM look at where you are driving. Check you own tire pressure from time to time. Dont try and take a turn doing 80 on wet roads. We have all lost of common scene. Oh one one more the Passenger side air bag sensors that turn them off when a child seat in in it. MMM Darwin has lost his control of population control.
Thats my opinion.