Lexus 2013 IS250 Owner's Manual page 397


Registering air conditioning settings to electronic keys (vehicles with driving
position memory)

Unlocking the vehicle using an electronic key and turning the engine switch to
IGNITION ON mode will recall that key's registered air conditioning settings.

When the engine switch is turned off, the current air conditioning settings will
automatically be registered to the electronic key that was used to unlock the
vehicle.

The system may not operate correctly if more than one electronic key is in the
vicinity or if the smart entry & start system is used to unlock a passenger door.

The doors that can recall the air conditioning setting when unlocked using the
smart entry & start system can be changed.
Lexus dealer or repairer, or another duly qualified and equipped professional.
*
: The doors that can recall the driving position memory are changed at the same
time.

Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and the
ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow
immediately after

Fogging up of the windows
The windows will easily fog up when the humidity in the vehicle is high. Turning
("A/C") on will dehumidify the air from the outlets and defog the wind-
shield effectively.

If you turn

The windows may fog up if the recirculated air mode is used.

Outside/recirculated air mode

When driving on dusty roads such as tunnels or in heavy traffic, set the outside/
recirculated air mode button to the recirculated air mode. This is effective in
preventing outside air from entering the vehicle interior. During cooling opera-
tion, setting the recirculated air mode will also cool the vehicle interior effec-
tively.

Outside/recirculated air mode may automatically switch depending on the tem-
perature setting or the inside temperature.

Operation of the air conditioning system in Eco drive mode
In Eco drive mode, the air conditioning system is controlled as follows to priori-
tize fuel efficiency:

Engine speed and compressor operation controlled to restrict heating/cooling
capacity

Fan speed restricted when automatic mode is selected
To improve air conditioning performance, perform the following operations:

Adjust the fan speed

Turn off Eco drive mode

When the outside temperature falls to nearly 0C (32F)
IS250_EE(OM53B11E)
6-1. Using the air conditioning system
is pressed or "AUTO" is selected.
("A/C") off, the windows may fog up more easily.
*
For details, contact any authorized
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