I went to take the picture today, but the sign has suddenly disappeared. But it wasn't the Key fob sign, as it showed BATT words under the blinking battery sign. I'll keep an eye & take a picture if it reappears. The battery is just 1 year old & is maintenance free.
Another issue I'm noticing for the last 2-3 weeks, whenever I move the steering wheel to extreme right, it produces a constant low noise (like, thik thik thik). Extreme left doesn't produce any such noise. I remember hearing that Civic X has steering wheel issue, could it be related to that?