TOYOTA 2010 Sienna - Manual (Page 354)

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3-4. Using the hands-free phone system (for cellular phone)
CAUTION
■
Caution while driving
Do not use a cellular phone, or connect the Bluetooth
®
phone.
NOTICE
■
To prevent damage to a cellular phone
Do not leave a cellular phone in the vehicle. The temperature inside may
become high resulting in damage to the phone.