2009 Toyota Avalon Owners Manual - Page 269

3-3. Using the hands-free system (for cellular phone) n Automatic adjustment of volume When vehicle speed is 50 mph (80 km/h) or more, the volume automatically increases. The volume returns to the previous volume setting when vehicle speed drops to 43 mph (70 km/h) or less. n When using a voice command l For numbers, say a combination of single digits from zero to nine, # (pound), ∗ (star), and + (plus). l Say a command correctly and clearly. n The system may not recognize your voice in the following situations: l When driving on unsealed roads l When driving at high speeds l If the window is open l If the air conditioning is blowing directly on the microphone l If the air conditioning is set too high n The following cannot be performed while driving: l Operating the system with l Registering a cellular phone to the system n Changing the passkey →P. 254 244