Acura 2008 RL Owner's Manual page 178

Keyless Access System
Ignition Switch Operating Range
The engine may not run, and some
malfunctions may occur, if the
remote is:
Outside the vehicle.
On the dashboard.
On the rear interior panel.
In the glove box.
In the door pockets.
In the trunk, etc.
172
The engine may not start if the
remote is subjected to strong radio
waves.
Also, the engine may not start if the
remote is too close to the windows.
Make sure you know where the remote
is when you are inside the vehicle.
Remember that you can start the engine
without using the built-in key when the
remote is inside the vehicle.
Make sure you always carry the remote
with you.