stop start Lexus IS F 2012 Owner's Guide

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2-1. Driving procedures
IS F_U
■If the engine does not start
The engine immobilizer system may not have been deactivated. (→P. 8 6 )
■When the steering lock cannot be released
■When the “ENGINE START STOP” switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Lexus
dealer immediately.
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than an hour with the shift lever
in P, the “ENGINE START STOP” switch will automatically turn OFF.
■Electronic key battery depletion
→P. 3 8
■When the electronic key battery is discharged
→P. 4 2 9
■Conditions affecting operation
→P. 3 6
■Note for the entry function
→P. 3 9 The “ENGINE START STOP” switch indica-
tor will flash in green and a message will be
shown on the multi-information display. Press
the “ENGINE START STOP” switch again
while turning the steering wheel left and right.

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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, push and
hold the “ENGINE START STOP” switch for more than 3 seconds.
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 these 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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2-1. Driving procedures
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Automatic transmission
Select a shift position appropriate for the driving conditions.
■Shifting the shift lever an d selecting a shift position
While the “ENGINE
START STOP” switch is
in IGNITION ON
mode, depress the brake
pedal and move the shift
lever.
*: To improve fuel efficiency andreduce noises, set the shift lever
in the D position for normal driv-
ing.
Shift
positionFunction
PPa r k i n g t h e v e h i c l e / starting the engine
RReversing
NNeutral
DNormal driving*
MM mode driving (→ P. 1 4 3 )

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2-1. Driving procedures
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When driving
IS F_U
■Rev indicator
■Downshift restrictions warning buzzer
To help ensure safety and driving performance, downshifting operation may some-
times be restricted. In some circumstances, downshifting may not be possible even
when the shift lever or paddle shift switch is operated. (A buzzer will sound twice.)
■When driving with the cruise control or dynamic radar cruise control
Engine braking will not occur during shift range selection in the D position, even
when downshifting to range 7, 6, 5 or 4. (→P. 173, 177)
■Automatic deactivation of snow mode and “Sport” mode
If the “ENGINE START STOP” switch is turned OFF after driving in either snow
mode or “Sport” mode, the mode is automatically deactivated.
■If the shift lever cannot be shifted from P
→P. 4 9 7
●When the shift lever is in D (paddle shift
switches operated) or in M, an indicator on
the tachometer illuminates in 3 steps in the
case of high engine speeds to encourage
the driver to upshift.
●If the third (red) segment illuminates, a
buzzer will also sound.

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2-1. Driving procedures
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■Automatic gear selection when the vehicle is stopped
●When the vehicle comes to a stop, the transmission will automatically downshift
to allow you to start off in 1st gear.
●When the vehicle is idling at high rpm in order to warm up, and the vehicle is on
a slippery road, the transmission will automatically shift to 2nd gear for stopping
and starting off.
■If the automatic transmission fluid te mperature warning message is displayed
■AI-SHIFT
The AI-SHIFT automatically selects the suitable gear according to driver perfor-
mance and driving conditions.
The AI-SHIFT automatically operates when the shift lever is in the D position. How-
ever, operating the “-” paddle shift switch will restrict the function’s operation. (Shift-
ing the shift lever to the M position cancels the function.)
CAUTION
■When driving on slippery road surfaces
Be careful of downshifting and sudden acceleration, as this could result in the vehi-
cle skidding to the side or spinning.
If the automatic transmission fluid tempera-
ture warning message is displayed while driv-
ing, make sure you return to normal D
position driving and reduce speed by easing
off the accelerator pedal. Stop the vehicle in a
safe place, shift the shift lever to the P position
and let the engine idle until the warning mes-
sage goes out.
When the warning message goes out, the
vehicle can be driven again.
If the warning message does not go out after
waiting a while, have your vehicle inspected
by your Lexus dealer.

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2-1. Driving procedures
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When driving
IS F_U
Turn signal lever
■Turn signals can be operated when
The “ENGINE START STOP” switch is in IGNITION ON mode.
■If the indicators flash faster than usual
Check that a light bulb in the front or rear turn signal lights has not burned out.
Right turn
Left turn
Move and hold the lever part-
way to signal a lane change
The right hand signal will flash
until you release the lever.
Move and hold the lever part-
way to signal a lane change
The left hand signal will flash
until you release the lever.

150
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 5 7

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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 per-
formed. They will turn off after the engine is started, or after a few sec-
onds. 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.
Turn signal indicator
( → P. 1 4 7 )Cruise control indicator
(→ P. 173, 177)
Headlight high beam indi-
cator ( →P. 1 6 4 )
(if equipped)
Intuitive parking assist
indicator ( →P. 1 9 1 )
(U.S.A.)
Headlight indicator
(→ P. 1 6 2 )Slip indicator ( →P. 1 9 8 )
(Canada)
Tail light indicator
(→ P. 1 6 2 ) VSC off indicator
(→ P. 1 9 8 )
Front fog light indicator
(→ P. 166) “TRAC OFF” indicator
(→ P. 1 9 8 )
“SNOW” indicator
(→ P. 1 4 0 ) SRS airbag on-off indica-
tor ( →P. 1 0 6 )
“SPORT” indicator
(→ P. 140, 199)
*1, 2
*1
*1
*1

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2-2. Instrument cluster
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CAUTION
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning light not come on
when you start the engine, this could mean that these systems are not available to
help protect you in an accident, which could result in death or serious injury. Have
the vehicle inspected by your Lexus dealer immediately if this occurs.
■Warning lights
Warning lights inform the driver of malfunctions in any of the vehi-
cle’s systems. ( →P. 463)
*: These lights turn on when the “ENGINE START STOP” switch is turned
to IGNITION ON mode to indicate that a system check is being per-
formed. They will turn off after the engine is started, or after a few sec-
onds. 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.
(U.S.A.)(Canada)(Canada)(U.S.A.)
(Canada)(U.S.A.)(if equipped)(for
driver)(for front
passenger)
******
******
*

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2-2. Instrument cluster
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Trip informationDisplay items can be switched by
pushing the “DISP” switch.
■ Outside temperature
■ Driving range
Displays the outside air temperature.
The temperature range that can be displayed is from
-40 °F (-40 °C) to 122 °F (50 °C).
When the temperature drops to 37°F (3°C), the dig-
its of the display will flash for 10 seconds.
Displays the estimated maximum distance that can
be driven with the quantity of fuel remaining.
• This distance is computed based on your average fuel consumption. As a result, the actual distance
that can be driven may differ from that displayed.
• When only a small amount of fuel is added to the tank, the display may not be updated.
When refueling, turn the “ENGINE START STOP”
switch off. If the vehicle is refueled without turning
the “ENGINE START STOP” switch off, the display
may not be updated.