torque Lexus HS250h 2011 Do-it-yourself maintenance / LEXUS 2011 HS250H OWNERS MANUAL QUICK GUIDE (OM75039U)

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■Selecting a driving mode
The following modes can be selected to suit driving conditions:
Eco drive mode
Suitable for improving the fuel economy,
because the torque corresponding to
the accelerator pedal depression
amount can be generated more
smoothly than it is in normal conditions
and the operation of the air conditioning
system (heating/cooling) will be mini-
mized.
When the “ECO MODE” switch is
pressed, the “ECO MODE” indicator
comes on in the meter.
Po w e r m o d e
Suitable when the vehicle needs to drive
powerfully or travels in mountainous
areas.
When the power mode switch is
pressed, the “PWR MODE” indicator
comes on in the meter.
■Using air conditioning in Eco drive mode
The Eco drive mode controls heating/cooling and fan speed operation to improve fuel
consumption. When you want to improve the effectiveness of the air conditioning sys-
tem, adjust the fan speed or cancel the Eco drive mode.
For more information, refer to the “Navigation System Owner’s Manual”.

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LKA (Lane-Keeping Assist) (If Equipped)
Lane departure warning function
If the system judges that the vehicle may deviate from its lane, it alerts the driver using
rapid beeping, indications on the multi-information display, and a sensory warning
* given
via the steering wheel.
*: A slight steering torque is applied for a short period of time in the direction of the cen-
ter of the lane.
Lane keeping assist function
This function will be active when the vehicle-to-vehicle distance control mode of the
cruise control is set with vehicle speed above approx. 45 mph (approx. 72 km/h) and
while the lane departure warning function is active. When the lane keeping assist func-
tion is active, a slight steering torque will be applied, to help the driver maintain the vehi-
cle inside the lane.
■Tu r n i n g t h e L K A s y s t e m o n
The lane departure warning function and lane keeping assist function will be activated
depending on the recognition condition of lane markers, vehicle speed and the setting of
radar cruise control (vehicle-to-vehicle distance control mode).
Press the “LKA” switch to activate the sys-
tem.
“LKA” indicator will come on.
Press the switch again to turn the LKA
system off.
While driving on a freeway or motor highway that has lane markers, this system recog-
nizes the lanes using a camera as a sensor to assist the driver with staying in the lane. The
LKA system has two functions.