Automatic Volume Adjustment; Operations That Cannot Be Performed While Driving - Toyota Land Cruiser Prado Owner's Manual

3-3. Using the hands-free system (for mobile phone)
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Automatic volume adjustment

When vehicle speed reaches 80 km/h (50 mph) or more, the volume auto-
matically increases. The volume returns to the previous volume setting when
vehicle speed drops to 70 km/h (43 mph) or less.
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Operations that cannot be performed while driving

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Operating the system with the "TUNE•SEL" knob
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Registering a mobile phone to the system
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Changing the passkey
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