engine Lexus IS F 2011 Workshop Manual

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2-1. Driving procedures
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If the engine does not start
The engine immobilizer system may not have been deactivated. (P. 9 2 )
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 any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional, 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. 4 3
When the electronic key battery is discharged
P. 3 8 8
Conditions affecting operation
P. 4 1
Note for the entry function
P. 4 5
The “ENGINE START STOP” switch
indicator will flash in green and a mes-
sage will be shown on the multi-informa-
tion display. Press the “ENGINE START
STOP” switch again while turning the
steering wheel left and right.

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When driving
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CAUTION
When starting the engine
Always start the engine while sitting in the driver's seat. Do not press the
accelerator 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 sec-
onds.
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 and 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
and reduce noises, set the
shift lever in the D position
for normal driving.
Shift
posi-
tion
Function
PParking the vehicle/
starting the engine
RReversing
NNeutral
DNormal driving*
MM mode driving
(P155)

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When driving
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Shift position uses
Shift positionDisplayFunctionPurpose
Normal D
position driv-
ing
Gears
between 1
and 8 are
automati-
cally selected
according to
driving con-
ditions
(paddle shift
switches acti-
vated)
Shift range
selection
(P. 153)Allows opti-
mum use of
engine brak-
ing
Individual
gear selec-
tion Allows the
driver to
select gears
for sporty

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When driving
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Selecting shift ranges in the D position
To drive using temporary shift range selection, operate the “-” pad-
dle shift switch. The shift range can then be selected by operating
the “-” and “+” paddle shift switches. Changing the shift range
allows restriction of the highest gear, preventing unnecessary
upshifting and enabling the level of engine braking force to be
selected.
Higher shift range
Lower shift range
The selected shift range, from 1
to 8, will be displayed in the
meter cluster.
To return to normal D position
driving, the “+” paddle shift
switch must be held down for a
period of time.

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2-1. Driving procedures
IS F_EEShift ranges and their functions
*: “D” is also displayed to indicate the shift position.
A lower shift range will provide greater engine braking force than a
higher shift range.
Meter cluster dis-
play
*Function
8Gears between 1 and 8 are automatically selected
according to vehicle speed and driving conditions
7Gears between 1 and 7 are automatically selected
according to vehicle speed and driving conditions
6Gears between 1 and 6 are automatically selected
according to vehicle speed and driving conditions
5Gears between 1 and 5 are automatically selected
according to vehicle speed and driving conditions
4Gears between 1 and 4 are automatically selected
according to vehicle speed and driving conditions
3Gears between 1 and 3 are automatically selected
according to vehicle speed and driving conditions
2Gears between 1 and 2 are automatically selected
according to vehicle speed and driving conditions
1The gear is set at 1

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When driving
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Selecting gears in the M position
To enter M mode, shift the shift lever to the M position. Gears can
then be selected by operating the shift lever or paddle shift
switches, allowing you to drive in the gear of your choosing.
Upshifting
Downshifting
The gear changes once every
time the shift lever or paddle
shift switch is operated.
The selected gear, from 1 to 8,
will be displayed in the meter
cluster.
When in the M position, the gear will not change unless the shift
lever or paddle shift switches are operated.
However, even when in the M position, the gears will be automati-
cally changed in the following situations:
When vehicle speed drops (downshift only).
When the automatic transmission fluid or engine coolant tem-
perature is low.

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When driving
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Rev indicator
Downshift restrictions warning buzzer
To help ensure safety and driving performance, downshifting operation may
sometimes 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. 180, 184)
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 5 6
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 vehi-
cle is on a slippery road, the transmission will automatically shift to 2nd
gear for stopping and starting off.
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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If the automatic transmission fluid temperature warning message is dis-
played
AI-SHIFT
The AI-SHIFT automatically selects the suitable gear according to driver
performance and driving conditions.
The AI-SHIFT automatically operates when the shift lever is in the D posi-
tion. However, operating the “-” paddle shift switch will restrict the func-
tion’s operation. (Shifting 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 vehicle skidding to the side or spinning.
If the automatic transmission fluid tem-
perature warning message is displayed
while driving, 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
message 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 any authorized Lexus
dealer or repairer, or another duly qual-
ified and equipped professional

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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
partway to signal a lane
change
The right hand signal will
flash until you release the
lever.
Move and hold the lever
partway to signal a lane
change
The left hand signal will flash
until you release the lever.