The vehicle transmits radio waves to locate the smart entry remote when locking/ unlocking the doors and fuel fill door, opening the trunk, or starting the engine.
In the following cases, locking/unlocking the doors, opening the trunk, or starting the engine may be inhibited or operation may be unstable:
Low Smart Entry Remote Signal Strength*
Communication between the smart entry remote and the vehicle consumes the smart entry remote’s battery.
Battery life is about two years, but this varies depending on regularity of use.
The battery is consumed whenever the smart entry remote is receiving strong radio waves. Avoid placing it near electrical appliances such as televisions and personal computers.
Honda Civic Owners Manual. If the Smart Entry Remote Battery is
Weak
Models with smart entry system
If the beeper sounds, the To Start, Hold Remote Near Start Button message
appears on the driver information interface, the ENGINE START/STOP button
flashes, and the engine won't start. Start the engine as follows:
Touch the center of the ENGINE START/
...