Lexus GS 350 Owner's Manual page 269

Operation of the air conditioning system in Eco drive mode
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Eco drive mode controls the heating/cooling operations and fan speed of the air
conditioning system to enhance fuel efficiency. To improve air conditioning perfor-
mance, adjust the fan speed or turn off Eco drive mode. (→P. 345)
Automatic operation of the seat heater during Eco drive mode
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If the driving mode select switch is switched to Eco drive mode in cold temperatures,
the seat heater will be automatically operated to assist heating performance.
Sport mode automatic deactivation
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Sport mode is automatically deactivated if the engine switch is turned off after driv-
ing in sport mode.
4-5. Using the driving support systems
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