2010 Acura TL Owner's Manual - Page 180

Keyless Access System Engine Start/Stop Button Operating Range Make sure you know where the remote is when you are inside the vehicle. Remember that you can start the engine when the remote is inside the vehicle. Make sure you always carry the remote with you. Instruments and Controls The engine may not run, and some malfunctions may occur, if the remote is outside the vehicle. 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. 177 2010 TL