Lexus IS250 U Owner's Manual page 351

Voice commands may not be recognized if:
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• Spoken too quickly.
• Spoken at a low or high volume.
• The roof or windows are open.
• Passengers are talking while voice commands are spoken.
• The air conditioning speed is set high.
• The air conditioning vents are turned towards the microphone.
In the following conditions, the system may not recognize the command properly and
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using voice commands may not be possible:
• The command is incorrect or unclear. Note that certain words, accents or speech
patterns may be difficult for the system to recognize.
• There is excessive background noise, such as wind noise.
When searching for a track
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A USB memory or iPod must be connected to enable track searching and playback.
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(P. 274)
When a USB memory or iPod is connected, recognition data is created so tracks can
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be searched using voice commands.
Recognition data is updated under the following conditions:
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• When the USB memory or iPod data has changed.
• When the voice recognition language is changed. (P. 276)
While the recognition data is being created or being updated, a track search cannot be
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performed using a voice command.
The Gracenote
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P. 299
Casual speech recognization
Due to natural language speech recognition technology, this system enables rec-
ognition of a command when spoken naturally. However, the system cannot rec-
ognize every variation of each command.
In some situations, it is possible to omit the command for the procedure and
directly state the desired operation.
This function is available in English, Spanish and French.
IS350/250_U (OM53C50U)
®
media database
5-12. Other function
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