LF (Low Frequency) Antennas
WARNING: This page is about a different car, the 2010 Acura TL and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
The front interior, rear interior and rear shelf LF antennas send the signals to the remote placed in the interior. The driver's door, front passenger's door, and rear bumper antennas send the signals to the keyless remote outside of the vehicle.