Off means off so I'm not sure why the dash would flash when it's off.
Mine has been spot on. Zero false positives, and each warning has had merit in my opinion.
I'm not sure how you guys could be dissatisfied with the warning. The beep is hard to hear while listening to music, sure, but the flashing light below the driver's point of view grabs my attention without fail.
We are dissatisfied with the warning because it doesn't work. I'm not sure how you could have missed that among all of these posts.
If yours works as flawlessly as you say, I suspect you have the Touring model with the radar based system (edit: I see your comment re: camera).
Would have been nice if Honda included Auto braking like the Mazda 6, Impala, et.al. The Infinity braked late in CR testing and crashed through the barrier, Volvo worked flawlessly. I digress.
If you have a lesser Accord like the rest of us with the useless camera based system, the consider yourself lucky.
Mine fails to activate even set to long but every now and then it works.
I have tried to activate it but it's like playing chicken, I get so close with no FCW warning, I am forced to brake for hear of hitting something waiting on this useless FCW to chine on.
The few times it activates, always in slow traffic in the city, the timing is so short I am already on the brakes and if I braked when I heard the beep or saw the flash, it would be way too late.