the only battery is in your remote key fab,the system uses the car battery for the rest of its power.the remote stater system probably has a failure internally, try changing the battery in your remote first,they do get weak enough to make the light come on but not transmit to starter/lock control box.the noise your hearing when you turn the key in door is the lock actuator it is not working properly and this to could make your remote system not work.if the remote system does not get a signal that doors are locked it might not let you use remote.the door lock actuator has a micro switch on it that tells the control box that is locked or unlocked.good luck honda tech 12yrs