2011 Lexus RX 450h Owners Manual - Page 482
2011 Lexus RX 450h Manual
Page 482 highlights
3-4. Using the hands-free phone system (for mobile phones) n Automatic volume adjustment When vehicle speed reaches 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 For numbers, say a combination of single digits from zero to nine, # (pound), ∗ (star), and + (plus). Say the command correctly and clearly. n Situations in which the system may not recognize your voice l When driving on rough roads l When driving at high speeds l When air is blowing out of the vents onto the microphone l When the air conditioning fan emits a loud noise n Operations that cannot be performed while driving l Operating the system with l Registering a mobile phone to the system n Changing the passkey →P. 409 400