ECO mode Lexus IS F 2014 User Guide
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2-1. Driving procedures
2
When driving
IS F_U
CAUTION
■When starting the engine
Always start the engine while sitting in the driver’s seat. Do not press the accelera-
tor while starting the engine under any circumstances.
Doing so may cause an accident resulting in death or serious injury.
■Stopping the engine in an emergency
If you want to stop the engine in an emergency while driving the vehicle, press and
hold the “ENGINE START STOP” switch for more than 2 seconds, or press it
briefly 3 times or more in succession. (→P.  5 1 5 )
However, do not touch the “ENGINE START STOP” switch while driving except in
an emergency. Turning the engine off while driving will not cause loss of steering or
braking control, but the power assist to th ese systems will be lost. This will make it
more difficult to steer and brake, so you should pull over and stop the vehicle as
soon as it is safe to do so.
NOTICE
■To prevent battery discharge
Do not leave the “ENGINE START STOP” switch in ACCESSORY or IGNITION
ON mode for long periods without the engine running.
■When starting the engine 
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have the engine
checked immediately.  
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IS F_U
2-2. Instrument cluster
Gauges and meters
The units used on the speedometer and the tachometer gauge display may
differ depending on the model/type.
 
The following gauges, meters and display illuminate when the
“ENGINE START STOP” switch is in IGNITION ON mode.Engine coolant temperature gauge
Displays the engine coolant temperature. If the temperature is too high,
the display will flash.
Engine oil temperature gauge
Displays the engine oil temperature. If the temperature is too high, the dis-
play will flash.
Odometer and trip meter
Odometer: Displays the total distance the vehicle has been driven.
Trip meter: Displays the distance the vehicle has been driven since the meter was last reset. Trip meters “A” and “B” can be
used to record and display different distances indepen-
dently.
Multi-information display
→ P.  1 6 1 
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2-2. Instrument cluster
2
When driving
IS F_U
■Indicators
The indicators inform the driver of the operating state of the vehi-
cle’s various systems. 
*1: These lights turn on when the “ENGINE START STOP” switch is
turned to IGNITION ON mode to indicate that a system check is
being performed. They will turn off after the engine is started, or after a
few seconds. There may be a malfunction in a system if a light does not
come on, or if the lights do not turn off. Have the vehicle inspected by
your Lexus dealer.
*2: The light flashes to indicate that the system is operating.
*3: The light flashes when the system is turned off. The light flashes quicklyto indicate that the system is operating.
Turn signal indicator 
(→ P.  1 5 1 )Cruise control indicator
 (→ P. 177, 181)
Headlight high beam indi-
cator ( →P.  1 6 8 )
(if equipped)
Intuitive parking assist 
indicator ( →P.  1 9 5 )
(U.S.A.)
Headlight indicator
 (→ P.  1 6 6 )Slip indicator ( →P. 202)
(Canada)
Tail light indicator
(→ P. 166) VSC off indicator
 (→ P. 202)
Front fog light indicator
(→ P.  1 7 0 )  “TRAC OFF” indicator
 (→ P. 202)
“SNOW” indicator
 (→ P. 144) SRS airbag on-off indica-
tor ( →P.  1 0 8 )
“SPORT” indicator
 (→ P. 144, 203)
(if equipped)
Pre-collision system 
warning light (→ P.  2 0 7 )
*1, 2
*1
*1
*1
*1, 3 
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2-3. Operating the lights and windshield wipers
2
When driving
IS F_U
■Automatic light off system
●When the headlights come on: The headlights and tail lights turn off 30 seconds
after a door is opened and closed if the “ENGINE START STOP” switch has
been switched to ACCESSORY mode or turned OFF. (The lights turn off
immediately if  on the key is pressed after all doors are locked.)
●When only the tail lights come on: The tail lights turn off automatically if the
“ENGINE START STOP” switch is switched to ACCESSORY mode or turned
OFF and driver’s door is opened.
To turn the lights on again, switch to IGNITION ON mode, or turn the light switch
off once and then back to
  or  . 
■Automatic headlight leveling system
The level of the headlights is automatically adjusted according to the number of
passengers and the loading condition of the vehicle to ensure that the headlights do
not interfere with other road users. 
■Customization that can be configured at Lexus dealer
Settings (e.g. light sensor sensitivity) can be changed. 
(Customizable features  →P.  5 4 4 )
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than necessary when the engine is not running. 
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2-3. Operating the lights and windshield wipers
2
When driving
IS F_U
■If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the wind-
shield washer fluid reservoir.
■Customization that can be configured at Lexus dealer
Settings (e.g. drip prevention function) can be changed. 
(Customizable features →P.  5 4 4 )
CAUTION
■Caution regarding the use of windshield wipers in “AUTO” mode
The windshield wipers may operate unexpectedly if the sensor is touched or the
windshield is subject to vibration in “AUTO” mode. Take care that your fingers etc.
do not become caught in the windshield wipers.
NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■When a nozzle becomes blocked
Do not try to clear it with a pin or other object. The nozzle will be damaged.
■When there is no washer fluid spray from the nozzle
Damage to the washer fluid pump may be caused if the lever is pulled toward you
and held continually.  
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2-4. Using other driving systems
IS F_U
■Setting the vehicle speed (vehic le-to-vehicle distance control
mode)
Press the “ON-OFF” button to
activate the cruise control.
Cruise control indicator will
come on.
Press the button again to deacti-
vate the cruise control. 
Accelerate or decelerate the
vehicle to the desired speed,
and push the lever down to set
the speed. 
The vehicle speed at the
moment the lever is released
becomes the set speed.
STEP1
STEP2 
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2-4. Using other driving systems
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When driving
IS F_U
■Adjusting the set speed
To change the set speed, operate the lever until the desired set
speed is displayed.
Increases the speed
Decreases the speed
Fine adjustment: Momentarily
move the lever in the desired
direction.
Large adjustment: Hold the
lever in the desired direction.
In the vehicle-to-vehicle distance control mode, the set speed will be
increased or decreased as follows:
• When the set speed is shown in “MPH” Fine adjustment: By approximately 5 mph (8 km/h) each time the lever
is operated
Large adjustment: By approximately 5 mph (8 km/h) for each 0.75
seconds the lever is held
• When the set speed is shown in “km/h” Fine adjustment: By approximately 3.1 mph (5 km/h) each time the
lever is operated
Large adjustment: By approximately 3.1 mph (5 km/h) for each 0.75
seconds the lever is held
In the constant speed control mode ( →P.188), the set speed will be
increased or decreased as follows:
Fine adjustment: By approximately 1 mph (1.6 km/h) each time the lever is
operated
Large adjustment: The set speed can be increased or decreased continu-
ally until the lever is released. 
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2-4. Using other driving systems
IS F_U
Selecting conventional constant speed control mode
Constant speed control mode differs from vehicle-to-vehicle distance
control mode. When constant speed co ntrol mode is selected, your vehi-
cle will maintain a set speed regardless of whether or not there are other
vehicles in the lane ahead.
Press the “ON-OFF” button to
activate the cruise control.
Cruise control indicator will come
on.
Press the button again to deacti-
vate the cruise control. 
Switch to constant speed con-
trol mode.
(Push the lever forward and
hold for approximately one sec-
ond.) 
When in constant speed control
mode, to return to vehicle-to-vehi-
cle distance control mode, push
the lever forward again and hold
for approximately 1 second.
After the desired speed has been
set, it is not possible to return to
vehicle-to-vehicle distance control
mode.
If the “ENGINE START STOP”
switch is turned off and then turned
to IGNITION ON mode again, the
vehicle will automatically return to
vehicle-to-vehicle distance control
mode. 
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2-4. Using other driving systems
2
When driving
IS F_U■
Turning off TRAC and VSC
To turn the TRAC and VSC sys-
tems off, press and hold the switch
for 3 seconds or more while the
vehicle is stopped.
The “TRAC OFF” indicator light
and VSC off indicator light should
come on.
Push the switch again to turn the
system back on.
F-sport mode total control switch
Your vehicle is equipped with two types of control modes to accommo-
date various driving preferences. The control modes can be selected with
the F-sport mode total control switch. Normal mode allows secure and
smooth normal driving. When the switch is pressed, “Sport” mode is acti-
vated. Control characteristics such as the ECT, EPS, VSC and TRAC are
adjusted to afford maneuverability closer to what a driver may have imag-
ined, while a sense of security is retained. “Sport” mode/Normal mode
The “SPORT” indicator comes on
when in “Sport” mode. 
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3-1. Using the air conditioning system and defogger
3
Interior features
IS F_U
■Air conditioning odors
●During use, various odors from inside  and outside the vehicle may enter into
and accumulate in the air conditioning system. This may then cause odor to be
emitted from the vents.
●To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to outside air mode
prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short period of time
immediately after the air conditioning system is started in automatic mode.
CAUTION
■To prevent the windshield from fogging up
Do not use during cool air operation in extremely humid weather. The dif-
ference between the temperature of the outside air and that of the windshield can
cause the outer surface of the windshield to fog up, blocking your vision.
NOTICE
■To prevent battery discharge
Do not leave the air conditio ning system on longer than necessary when the engine
is off.