Toyota Avalon Hybrid 2018 Owner's Manual page 260

260
4-5. Using the driving support systems
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Operation of the air conditioning system in Eco drive mode
Eco drive mode controls the heating/cooling operations and fan speed of the
air conditioning system to enhance fuel efficiency (→P. 274). To improve air
conditioning performance, adjust the fan speed or turn off Eco drive mode.
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Sport mode automatic deactivation
Sport mode is automatically deactivated if the power switch is turned off after
driving in sport mode.