What is the reason for the Honda keybatt flashing?

[MasonDella]

The battery in the key is low on power and should be replaced. Here are the specific details: Method for replacing the key battery: Pull out the manual key from the car door, align the built-in key with the slot, and gently turn the key; open it, remove the old battery, and replace it. Battery: Generally, the battery in a car remote can last for more than 2 years. If you find that you need to be very close to the car to remotely unlock the doors, or if the remote does not respond after pressing it several times, it indicates that the remote is out of power and the battery should be replaced. Button batteries typically last up to a year and a half, while cylindrical batteries in two-way remotes need replacement every six months. The concept is not about how often to replace the car key battery, but rather when the control distance of the key is less than half of the maximum remote distance or less than five to six meters, it should be replaced promptly.